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Pascal Jacques
Professor
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Recent publications


research focuses on the physical and mechanical metallurgy of several engineering alloys: advanced high strength steels for automotive applications with also concerns about hydrogen embrittlement; new high strength metastable titanium alloys for aerospace applications; new thermoelectric or magnetocaloric Heusler compounds for energy harvesting or magnetic cooling; bioresorbable alloys for cardiovascular implants; high entropy alloys with improved toughness; new alloys with improved properties specifically designed for 3D printing.

Research group(s): IMAP

PhD and Post-doc researchers under my supervision:


Development of high-toughness cryogenic alloys
Alvise Miotti Bettanini

Materials that can perform at extremely low temperatures are in great demand. Applications span from tanks and pressure vessels for LNG (Liquefied Natural Gas) carriers to structural materials in extreme conditions, like the upcoming exploration of Mars. In this context, it is critical to ensure very high toughness, which measures the resistance to crack propagation, at cryogenic temperatures. In this project, the experimental development of Fe-based superalloys is guided by a CALPHAD-based methodology, which allows the calculation of phase stability and phase transformation with computational models in order to reduce the experimental effort and hasten the development cycle of new materials.


Characterization and physics based modeling of plasticity and fracture of Dual-Phase steels towards ultratough materials by microstructure optimization
Karim Ismail

The research work, in collaboration with company ArcelorMittal, is about the plasticity, the damage and the crack propagation resistance of dual-phase steels, which are commonly used in the automotive industry. A minimum level of fracture toughness is required to prevent the propagation during forming operations of small edge damage or cracked zones induced by cutting. Therefore, unravelling the relationship between fracture toughness, microstructure and damage mechanisms is essential to develop advanced steels with superior forming ability. Furthermore, reaching superior fracture toughness could open to other potential applications.
Experimental works as well as computational modeling are used to study the behavior of such steels. A model for the plastic behavior and for the damage mechanisms related to the microstructure has been developed. A finite element based unit cell approach is used to address the plastic behavior, locally as well as at the macroscopic scale. A particular focus is put on the effect of particle morphology and orientation that have not been much investigated and that considerably affect local mechanical fields, and hence damage and fracture behavior. A two-stage void coalescence process is suggested in elongated microstructures. The data extracted from the elastoplastic analysis are fed into a cellular automaton approach of the damage evolution. This model introduces a statistical description of the material while using relatively simple damage evolution laws. Furthermore, the essential work of fracture method is used to quantify the resistance to the propagation of a crack on thin sheets. Martensite morphology in the form of platelets seems to be a means to reach a high fracture toughness. Finally, damage mechanisms are observed post-mortem and hole expansion ratio tests will be performed.


The influence of diffusible hydrogen on the mechanical behavior of third generation steels with a bainitic-martensitic matrix exhibiting a TRIP effect
Olivier Hubert

In the automotive sector, the latest developments led to the era of third generation steels, exhibiting levels of strength up to 1200MPa, while keeping an adequate ductility. However, this new generation of steels is potentially sensitive to hydrogen embrittlement. Even though hydrogen embrittlement is studied for over 50 years now, it only starts to become an issue in the case of low alloy steels that start to reach problematic levels of strength.

The purpose of my research work is to investigate the role and the impact of the diffusible hydrogen on the mechanical behavior of third generation steels presenting a martensitic and/or bainitic matrix together with retained austenite exhibiting a Transformation-Induced Plasticity (TRIP) effect. In order to generate such microstructures, a heat treatment called "Quenching and Partitioning (Q&P)" is carried out in hydrogen-rich atmospheres. More specifically, the role of each phase on the hydrogen capture and/or diffusivity, as well as the influence of other microstructural parameters such as grain boundaries is studied.

Single phase martensitic and bainitic microstructures exhibiting different strength levels were processed. The influence of diffusible hydrogen in each microstructure is then studied either after cathodic hydrogen charging or in the case of gaseous hydrogen charging during the annealing process.

What's the influence of the microstructure on the hydrogen capture ?
How does the microstructure affect the notions of solubility and diffusivity of hydrogen ?
How does hydrogen affect the TRIP (TRansformation Induced Plasticity) effect ?


CeraMAX / Aerostream
Matthieu Marteleur

I am currently working on the processing and characterisation of a particular type of ceramics called MAX phases. They present an intermediate behavior between a ceramic and a metal at high temperature, providing a unique combination of functional properties.
My research projects also include Additive Manufacturing on metallic materials, particularly Al and Ti alloys. I am studying the relationship between the process parameters and the resulting microstructure and properties.


Definition, processing and optimization of new Fe-based alloys for biodegradable stents
Aude Thomas

Nowadays, cardiovascular diseases, such as atherosclerosis are very common. A possible solution to deal with that kind of disease is the implantation of a stent. Unfortunately, long-term complications such as thrombosis or restenosis can happen. So, a new solution would be biodegradable stents. These would ensure the mechanical support when required and then, disappear when the artery is healed. Materials for biodegradable stents should possess a very interesting combination of properties : a mechanical behaviour adapted to physiolgical stresses, a suitable biocorrosion rate and biocompatibility. My goal is to develop iron-based alloys with this combination of properties. This research raises different scientific questions, such as « what is the link between composition, microstructure and the multifunctional profile (mechanical behavior and biocorrosion)? ».

In my research, I investigate existing TWIP steels and also new alloys. To investigate quickly a new system, I work with a diffusion multiplet. This enables to investigate a lot of different compositions in one sample, which gives a first idea of the studied system. The mechanical properties are evaluated via tensile tests for example, while corrosion properties are analyzed via potentiodynamic tests and immersion tests. Microstructure and phases are also very important and can be revealed thanks to SEM or EBSD for example.



DeltaT
Valentin Marchal-Marchant

obtained his degree in engineering in materials science from the Université catholique de Louvain in 2011. Then, he accomplished his PhD under the supervision of prof. Pascal Jacques, on the study of Physical Vapor Deposition of thick copper films on steel.

His research is now focused on the development of thermoelectric materials and thermoelectric generators for energy harvesting and passive electromechanical systems. It aims at using common and non-toxic materials to generate electrical power from thermal gradients. Nowadays, attention is put on large scale applications owing to more than 7 years of research about thermoelectric materials leaded in IMAP.

The big challenge of this topic is the development of new tools and equipments for material production and assembly, and specific characterization methods. Such a wide range of different tasks can only be achieved thanks to the versatility of technical and scientific expertises of the IMAP team members as well as Lacami support.


Study of the hardening properties, damage resistance and toughness of a new family of beta metastables titanium alloys
Laurine Choisez

The association of different plastic deformation modes (TRIP, TWIP) induces unmatched levels of mechanical properties in a new beta metastables titanium alloys family. A hardening beyond the theoretical limit is especially noticed, together with a uniform deformation 3 to 4 times higher than the one in a classic TA6V alloy and a yield stress superior of 30 percent to the one in a
TWIP alloy. A positive synergy is thought to exist between a high hardening and the damage resistance and toughness of such materials. My thesis will consist in the study of the damage resistance and the toughness of several beta metastables titanium alloys with different prevailing plastic deformation mechanisms in order to highlight the mechanism responsible of the post-necking deformation properties.


Surface mechanical treatment by friction stir processing of additive manufactured aluminium alloy parts to improve mechanical behaviour
Juan Guillermo Santos Macias

This research project aims at improving the mechanical behaviour of additive manufactured parts through a friction stir processing (FSP) surface mechanical treatment. This post-processing method significantly enhances ductility and is expected to also enhance fatigue resistance. Fatigue is a critical phenomenon in many applications, e.g. structural parts in the aerospace industry. More specifically, this research is focused on studying the effect of FSP on the microstructure (porosity and second phase size and spatial distribution) and mechanical behaviour (residual stresses and fatigue) of selective laser melting AlSi10Mg parts. Furthermore, in order to define an adequate FSP patterning strategy, the project will also feature an analysis of the influence of processing parameters through a chained thermal and microstructural model.


GTherm
Geoffrey Roy

Geoffrey holds a Master in Mechatronic Engineering (2010) and a PhD in Engineering (2015) from the Université catholique de Louvain where he works as a senior researcher at the Institute of Mechanics, Materials and Civil Engineering (iMMC).



Within the Division of Materials and Process Engineering (IMAP), his research is focused on the development of new thermoelectric materials and systems for a range of applications going from industrial waste heat recovery to autonomous powering of smart sensors. In his research, he pays particular attention to the development of new solutions that present improved both technical and economical profiles in order to facilitate the emergence of these solutions out of the lab.



This research is followed by several companies such as: Drever International, AGC Glass Europe, Carmeuse or Engie.


AERO+/FASAMA
Sophie Ryelandt

graduated as a physical engineer at Université catholique de Louvain in 1991. After having worked for six years at the R&D center of the Spadel company, she came back at UCL as a senior scientist. She is involved in various applied research projects in collaboration with the industry. Her research domains are dealing with material science, metallic composites, multilayered materials and coatings, additive manufacturing of metals, nanomechanical and mechanical testing and the link between microstructure and mechanical properties.


Aerostream and IAWATHA (additive manufacturing), LOCOTED (thermoelectrics)
Camille van der Rest

Camille van der Rest completed her PhD thesis on the optimisation of Heusler Fe2VAl-based thermoelectric compounds through innovative metallurgical processing in 2015. It was under the joint supervision of Prof. Pascal Jacques and Prof. Aude Simar. Her research topics now concern thermoelectric materials, additive manufacturing and friction stir processing technologies. Concerning thermoelectrics, the main objective is the development of low-cost, non-toxic, and powerful materials that could be used in large-scale industrial applications of heat recovery. In addition, she studies some fundamental aspects in order to improve the performances of such materials, i.e. ordering phenomena in off-stoichiometric Fe2VAl-based Heusler compounds. It is essential to make the link between (innovative) manufacturing processes, microstructures and the functional properties of these TE materials. Concerning additive manufacturing, the main contributions are on the characterisation and optimisation of the microstructures and the mechanical behaviour of Al parts obtained by Selective Laser Melting and the developpment of new materials for additive manufacturing. Again, the link between the process parameters and the final microstructure/properties is a key issue. Finally, Camille developed, together with Prof. Aude Simar and Prof. Pascal Jacques, a novel Friction Melt Bonding (FMB) process in order to weld aluminium alloys and steels. This process is still under development thanks to the collaboration with other researchers of IMAP.


Influence of defects on the life of biomedical implants
Maïté Croonenborghs

Implants are devices aiming to support, help or even correct biological structures. However, with time, some of these implants show aging problems. The roots of these problems can have numerous explanations. In some cases, the body reacts to the presence of a foreign body, and this can lead to health risks. Sometimes, the material can show, with time, signs of weakness. Later on, these defects can lead to the failure of the implant.









In the case of permanent stent implants, the presence of a foreign body in the blood vessels can lead to restenosis or late thrombosis. This is why bioresorbable stents are nowadays developed. These stents should support the vessels during their healing period and dissolve in an inoffensive way afterwards. Iron-based alloys are investigated for their appropriate mechanical properties but their degradation rate is too low. One investigated solution is to increase surface roughness to dissolve faster the implant. The effect of this roughness on the expansion process has not been analyzed for now.









The case of growth rods shows that the material itself can lead to implant failure. These rods are placed, during a surgery, along the spine of scoliotic children. They aim to support the spine and help it to straighten back. However, fracture events occur in 36% of the patients. During the surgery, the rods are bent to fit to the natural shape of the spine. The tools employed for this process can introduce some indentation marks on the surface of the rods and decrease their fatigue lifetime.









From these case studies, it is observed that the completion of an implant (i.e. stent implantation process) or its lifetime (i.e. growth rod failure) can be affected by its surface state. This research will therefore focus on the imperfection sensitiveness of such devices. Various kinds of defects are introduced at the sample surface. To understand the influence of these defects on the mechanical properties, these samples are tested and compared.






Fracture toughness of high entropy alloys
Antoine Hilhorst

High entropy alloys (HEAs) are a new family of metallic alloys. In contrast to conventional alloys, HEAs have multiple principal elements e.g. the equiatomic "Cantor" alloy CrMnFeCoNi. Alloys in this range of chemical composition have gathered attention only recently. From what was observed in conventional alloys, it was expected that HEAs microstructure be composed of several intermetallic phases but some systems are surprisingly single phase solid solution. Moreover, such single-phase alloys have excellent mechanical properties. For instance, CrMnFeCoNi possess a large fracture toughness, which increases with decreasing temperature, putting this alloy on par with the current best alloys used for cryogenic applications. As such, the objective of the thesis is to understand the underlying mechanisms responsible for the observed macroscopic behavior of such alloys.

The thesis aims to answer several questions such as: What are the mechanisms responsible for the increase in ductility, strength, and fracture toughness with decreasing temperature? What high-throughput methodology would be able to screen the vast range of possible chemical composition of HEAs for high performance alloys?

To understand the deformation mechanisms, several HEAs will be fully characterized from casting to mechanical testing. For the fracture toughness measurements, the essential work of fracture method will be employed as it is best suited for ductile thin sheets than compact tests. Diffusion multiples will be explored as a possible high-throughput method, as the presence of composition gradients allows the simultaneous characterization of a range of composition by techniques such as EDX, EBSD and nano-indentation.


Optimisation of the corrosion rate of iron-based alloys for bioresorbable stent applications
Sarah Reuter

The purpose of this PhD thesis is to optimise the metallic surface of iron-based alloys that are good candidates for bioresorbable stents but which corrosion properties are still insufficient. I will thus be working on these alloys by improving their surface properties, by acidifying the surface. Indeed, the corrosion products and salt compounds get deposited due to a neutral/basic environment in the close vicinity of the metal surface. These compounds act as a barrier for further corrosion. By acidifying the metallic surface, this would inhibit, or at least diminish, the deposition of these compounds. The corrosion properties of these metals will be studied by the use of electrochemical tests as well as immersion tests. The surface will be acidified by the presence of protons. This will be done by adding hydrogen in the metal. Nevertheless, the presence of hydrogen is known to weaken the metal. In order to avoid this weakening, the hydrogen will be trapped inside the steel.

This project englobes different disciplines and is made alive thanks to close collaboration with different entities of the UCL.


Lattice Distortion and Microstructure Development in High Entropy Alloys
Michael Callahan

My research focuses on two topics. The first concerns the relationship between the processing parameters and the resulting microstructure in a CoCrFeMnNi multiple principal element alloy (MPEA). MPEAs represent a class of materials for which development has only just begun in the last decade or so. As such, the body of work regarding the influence of processing parameters on the obtained microstructure is quite lacking, with only a few studies employing any form of heat treatment after casting. Moreover, only one of these studies employed more than one annealing temperature.
It is of interest, then, to investigate different thermo-mechanical processing routes (cooling rates, plastic deformation, annealing temperatures/times) and observe their effects on the resulting microstructure of the alloy. Additionally, studies on non-equimolar compositions will be performed to explore phase equilibria and attempt to optimize the microstructure of these alloys to further improve mechanical performance.

The second aspect of the research is of a more fundamental nature, namely, the effect of lattice distortion on microstructure and plastic deformation. In MPEAs, 4+ elements are combined in near-equimolar compositions, which is hypothesized to result in significant distortion of the crystal lattice due to differences in atomic radii. This distortion should have an effect on microstructure formation and on dislocation mobility and plastic deformation. The lattice distortion effect will be quantified using a combination of methods such as HRTEM, EELS, and XRD. Its effect on dislocation behavior and dislocation core energy will be investigated in hopes of understanding the relationship between lattice distortion, chemical composition, and more macroscopic material properties.


A microCT-based approach for biomechanical characterization of biodegradable metallic intravascular stents
Lisa Leyssens

The goal of my research project is to develop a highly detailed, advanced characterization platform to assess different aspects of biodegradable metallic intravascular stents using high-resolution 3D microfocus X-ray computed tomography (microCT). This will improve the understanding of the functional behavior of biodegradable stents in order to improve their design for potential clinical use. Structural properties will be investigated. They are critical because they will influence the mechanical and in vivo behavior of the stents. The mechanical properties will be assessed through 3D local strain mapping using 4D microCT. Finally, the stents will be screened in vivo to analyze the corrosion and surface changes, before and after implantation in rat arteries, and to quantify tissue ingrowth. Contrast-enhanced microCT will be used to visualize the vascular tissue. Different metallic alloys will be compared throughout the project.


Contribution in to development of new medium steels of third generation of advance high strength steels for weightlighting automotive structure
Hamza Essoussi

Partout dans le monde il y a un intérêt croissant pour développer de nouveaux aciers : les aciers avancés à haute résistance (Advanced High Strength Steel « AHSS ») pour plusieurs applications, en particulier l’industrie automobile. En conséquence, la recherche est en cours dans les universités, instituts de recherche et les entreprises. Pourquoi donc ces matériaux sont sélectionnés pour les applications automobiles ? Plusieurs facteurs entraînent l’utilisation des AHSS pour les véhicules. Dans un premier lieu leur utilisation contribue à la réduction du poids du véhicule et du coup la réduction de la consommation du fuel et donc la réduction de l’émission du dioxyde du carbone CO2 émis dans l’atmosphère. Non seulement cela mais aussi leur grande résistance aux chocs et leur meilleure performance augmente la sécurité des passagers et tout cela avec un coût minimal de production. La troisième génération des aciers avancés (3rd generation of AHSS) a une structure composée, en particulier leur microstructure qui est généralement une microstructure multiphase dans le but d’avoir une combinaison parfaite entre résistance et ductilité pour qu’ils soient adaptés aux différents procédés de mise en forme (formage de tôle, soudage…) et les commercialiser. La troisième génération des AHSSs contient des quantités considérables des éléments contribuant à augmenter leur résistance, comme : la martensite, la bainite et ferrite. Le comportement composé de la structure multiphase et de l’effet TRIP (Transformation Induced Plasticity) ou l’effet TWIP (Twinning Induced Plasticity) lié à la présence de l’austénite résiduelle permet d’obtenir un excellent compromis entre résistance et ductilité qui est désiré pour les procédés de formage.


additive manufacturing on Ti alloys
Amandine Duchaussoy

Implementation of titanium alloys used for additive manufacturing


Analysis of hydrogen uptake mechanisms in Al-Si coated high strength steels during hot stamping process
Mohamed Krid


Bioresorbable TWIP-CF
Galy Ingrid Nkou Bouala

The goal of my research project is to develop and optimize TWIP steels and new alloys for their use as bioresorbable stents. For this application, these materials have to be mechanically strong, biocompatible and their degradation rate has to be adapted to the healing rate of the stented artery. For that, their structure, microstructure and mechanical properties are characterized. For example, Microstructure and phases are evaluated by means of SEM, EDS or EBSD. Tensile tests and indentation tests are used to investigate their mechanical properties. The link between the composition, the microstructure and the multifunctional profile (mechanical behavior and biocorrosion) of these materials could thus be identified.



Recent publications

See complete list of publications

Journal Articles


1. Marteleur, Matthieu; Idrissi, Hosni; Amin-Ahmadi, Behnam; Prima, Frédéric; Schryvers, Dominique; Jacques, Pascal. On the nucleation mechanism of {112}〈111〉mechanical twins in as-quenched β metastable Ti-12 wt.% Mo alloy. In: Materialia, Vol. 7, p. 100418 (2019). doi:10.1016/j.mtla.2019.100418. http://hdl.handle.net/2078.1/218865

2. Roy, Geoffrey; van der Rest, Camille; Heymans, Sophie; Quintin, Emilie; Dupont, Védi; Erauw, Jean-Pierre; Schmitz, Alain; Jacques, Pascal. Global Analysis of Influence of Contacts on Heusler-Based Thermoelectric Modules. In: Journal of Electronic Materials, Vol. 48, no. 9, p. 5390-5402 (2019). doi:10.1007/s11664-019-07137-2. http://hdl.handle.net/2078.1/216090

3. Lin, Fengxiang; Marteleur, Matthieu; Jacques, Pascal; Delannay, Laurent. Transmission of {332}<113> twins across grain boundaries in a metastable beta-titanium alloy. In: International Journal of Plasticity, Vol. 105, p. 195-210 (2018). doi:10.1016/j.ijplas.2018.02.012. http://hdl.handle.net/2078.1/194357

4. Miotti Bettanini, Alvise; Hannard, Florent; Jacques, Pascal; Pardoen, Thomas; Guilleume, Badinier; Mithieux, Jean Denis; Delannay, Laurent. Residual ferrite in martensitic stainless steels: the effect of mechanical strength contrast on ductility. In: Materials Science and Engineering A: Structural Materials: Properties, Microstructures and Processing, Vol. 731, p. 495 - 505 (2018). doi:10.1016/j.msea.2018.06.012. http://hdl.handle.net/2078.1/200086

5. van der Rest, Camille; Schmitz, Alain; Jacques, Pascal. On the characterisation of antisite defects and ordering in off-stoichiometric Fe 2 VAl-based Heusler compounds by X-ray anomalous diffraction. In: Acta Materialia, Vol. 142, p. 193-200 (2018). doi:10.1016/j.actamat.2017.09.024. http://hdl.handle.net/2078.1/188115

6. Hatami, M.K.; Pardoen, Thomas; Lacroix, G.; Berke, P.; Jacques, Pascal; Massart, T.J. Towards ultra-high ductility TRIP-assisted multiphase steels controlled by strain gradient plasticity effects. In: Journal of the Mechanics and Physics of Solids, Vol. 98, p. 201-221 (2017). doi:10.1016/j.jmps.2016.09.006. http://hdl.handle.net/2078.1/177570

7. Alkorta, Jon; Marteleur, Matthieu; Jacques, Pascal. Improved simulation based HR-EBSD procedure using image gradient based DIC techniques. In: Ultramicroscopy, Vol. 182, p. 17-27 (2017). doi:10.1016/j.ultramic.2017.06.015. http://hdl.handle.net/2078.1/186551

8. Lin, Fengxiang; Marteleur, Matthieu; Alkorta, Jon; Jacques, Pascal; Delannay, Laurent. Local stress field induced by twinning in a metastable beta-titanium alloy. In: IOP Conference Series: Materials Science and Engineering, Vol. 219, p. 012031 (2017). doi:10.1088/1757-899X/219/1/012031. http://hdl.handle.net/2078.1/188529

9. Sun, F.; Zhang, J. Y.; Vermaut, P.; Choudhuri, D.; Alam, T.; Mantri, S. A.; Svec, P.; Gloriant, T.; Jacques, Pascal; Banerjee, R.; Prima, F. Strengthening strategy for a ductile metastableβ-titanium alloy using low-temperature aging. In: Materials Research Letters, Vol. 5, no. 8, p. 547-553 (2017). doi:10.1080/21663831.2017.1350211. http://hdl.handle.net/2078.1/186453

10. Kalbfleisch, Anne-Sophie; Matthews, Guillaume; Jacques, Pascal. On the influence of the cooling rate on the martensitic transformation of Ni–Mn–Sn Heusler alloys. In: Scripta Materialia, Vol. 114, p. 121-124 (2016). doi:10.1016/j.scriptamat.2015.12.005. http://hdl.handle.net/2078.1/168980


Patents


1. Jacques, Pascal; Simar, Aude; van der Rest, Camille; Matagne, Ernest; Roy, Geoffrey; Shmitz, Alain. Thermoelectric conversion module and method for making it. http://hdl.handle.net/2078.1/135212 http://hdl.handle.net/2078.1/135212

2. Jacques, Pascal; van der Rest, Camille; Simar, Aude. Method for Welding at least two layers. http://hdl.handle.net/2078.1/135184 http://hdl.handle.net/2078.1/135184


Conference Papers


1. Leyssens, Lisa; Verhaegen, Carole; Horman, Sandrine; Jacques, Pascal; Kerckhofs, Greet. Optimization of contrast-enhanced micro-CT for characterization of the in vivo behavior of biodegradable metallic intravascular stents. http://hdl.handle.net/2078.1/219156

2. Croonenborghs, Maïté; Jacques, Pascal. Iron-based biodegradable stents: impact of surface roughness on mechanical properties. http://hdl.handle.net/2078.1/218882

3. Marteleur, Matthieu; van der Rest, Camille; Couturiaux, Gaelle; Godet, Stéphane; Jacques, Pascal; Simar, Aude. Effect of process parameters and post-treatments on the mechanical static and fatigue properties of SLM AlSi10Mg alloy. http://hdl.handle.net/2078.1/224331

4. Reuter, Sarah; Georges, Cédric; Duportal, Malo; Mercier, Dimitri; Oudriss, Abdelali; Savall, Catherine; Jacques, Pascal. Optimisation of the corrosion rate of iron-based alloys for bioresorbable stent applications by surface acidification. http://hdl.handle.net/2078.1/218846

5. Marchal-Marchant, Valentin; Roy, Geoffrey; van der Rest, Camille; Poncelet, Olivier; Jacques, Pascal. Global analysis of the assembly of Fe2VAl and metal electrode through the study of the bonding process conditions.. http://hdl.handle.net/2078.1/224790

6. Nguyen, Van-Dung; Harik, P; Hilhorst, Antoine; Pardoen, Thomas; Jacques, Pascal; Noels, Ludovic. A multi-mechanism non-local porosity model for high-ductile materials; application to high entropy alloys. http://hdl.handle.net/2078.1/226263

7. Hilhorst, Antoine; Pardoen, Thomas; Jacques, Pascal. Sur la caractérisation de la ténacité exceptionnelle des alliages à haute entropie à base de métaux de transition. http://hdl.handle.net/2078.1/226233

8. Marteleur, Matthieu; Jacques, Pascal. High temperature compressive behavior of dense Cr2AlC and Ti3AlC2 Max phases obtained by SPS (reactive) sintering. http://hdl.handle.net/2078.1/224845

9. Erauw, Jean-Pierre; van der Rest, Camille; Dupont, Vedi; Poncelet, Olivier; Roy, Geoffrey; Marchal-Marchant, Valentin; Jacques, Pascal. Optimization of the thermoelectric properties of Spark Plasma Sintered Fe2VAl-based compounds through off-stoichiometry strategies. http://hdl.handle.net/2078.1/224854

10. Roy, Geoffrey; Marchal-Marchant, Valentin; Poncelet, Olivier; van der Rest, Camille; Schmitz, Alain; Jacques, Pascal. Industrially Scalable Thermoelectric System for Waste Heat Recovery using Heusler-based Modules and Heat Pipes. http://hdl.handle.net/2078.1/224763


Book Chapters


1. Jacques, Pascal. Phase transformations in transformation induced plasticity (TRIP)-assisted multiphase steels. In: Phase transformations in steels. Volume 2: Diffusionless transformations, high strength steels, modelling and advanced analytical techniques , Woodhead Publishing: Cambridge, UK, 2012, p. 213-246. 978-1-84569-971-0. doi:10.1533/9780857096111.2.213. http://hdl.handle.net/2078.1/122798

2. Jacques, Pascal. Transformation-induced plasticity in Steels. In: Thermodynamics, Microstructures and Plasticity , xxx, 2003, p. 241-250. http://hdl.handle.net/2078.1/74934

3. Jacques, Pascal; Furnemont, Quentin; Godet, Stéphane; Conlon, K.. Micromechanical characterisation and modelling of TRIP-assisted multiphase steels. In: Annual report 2003 NRC-CNRC , xxx, 2003, p. 42-43. http://hdl.handle.net/2078.1/74933


Dissertations


1. Jacques, Pascal. On the control of the interactions between phase transformations and mechanical properties in finely-grained multiphase alloys, a way for sustainable development in materials science, 2007-09-03. http://hdl.handle.net/2078.1/5190