High performance metallic alloys

The research activities of IMAP on metallic materials deal with engineering applications that require optimized combinations of structural and/or functional properties. This is particularly the case for the transport industry facing increasing demands on safety and sustainable development issues. Indeed, fuel consumption and gas emissions have to be drastically reduced through structure lightweighting while increasing safety and comfort devices. A continuous need for metallic materials with improved mechanical properties requires:

  • The identification of the physical mechanisms responsible at the micro- and nanoscopic scales for the strength, deformation, and fracture resistance;
  • The definition and characterization of the microstructures responsible for these mechanisms;
  • To design thermomechanical processing routes leading to these optimised microstructures.

The three largest families of engineering metallic materials, i.e. steels, aluminium and titanium alloys, are the topics of numerous research projects for more than 10 years. Particularly, the resistance and forming properties of newly designed high strength formable steels or titanium alloys are continuously enhanced by combining several strengthening mechanisms at different scales. Several studies are devoted to process, characterise, model and control the microstructure of (i) new generation steels involving finely grained microstructures and/or mechanical twinning (TWIP) and / or stress-induced martensitic transformation (TRIP); (ii) newly designed β metastable titanium alloys (Ti-555, Ti-12Mo); (iii) new aluminium alloys presenting enhanced fracture strain or self-healing abilities. On the other hand, the relationship between microstructure characteristics and resistance to damage and crack propagation of aluminium alloys for aerospace applications is characterised and modelled. These property-driven research topics are sustained by generic research projects on experimental characterisation of phase transformations and micromechanical behaviour and on microstructure-based modelling of plasticity and fracture.

The same research philosophy has been recently applied to the development of Heusler compounds for energy applications. More precisely, Fe-based compounds are studied for low grade heat harvesting through the thermoelectric or thermomagnetic effects.

A representative list of publications is provided hereunder. Research funding comes from both fundamental and applied public research sources, as well as directly from industry.


International Journals


Huang, Chunjie ; Yan, Xingchen ; Zhao, Lv ; Liu, Min ; Ma, Wenyou ; Wang, Weibing ; Soete, Jeroen ; Simar, Aude. Ductilization of selective laser melted Ti6Al4V alloy by friction stir processing. In: Materials Science and Engineering: A, Vol. 755, p. 85-96 (2019)

Jimenez Mena, Norberto ; Jacques, Pascal ; Drezet, Jean-Marie ; Simar, Aude. On the Prediction of Hot Tearing in Al-to-Steel Welding by Friction Melt Bonding. In: Metallurgical and Materials Transactions A - Physical Metallurgy and Materials Science, Vol. 49, no. 7, p. 2692-2704 (2018)

Hannard, Florent ; Castin, Sidney ; Maire, Eric ; Mokso, Rajmund ; Pardoen, Thomas ; Simar, Aude. Ductilization of aluminium alloy 6056 by friction stir processing. In: Acta Materialia, Vol. 130, p. 121-136 (2017).

Pineau, André ; Amine Benzerga, A. ; Pardoen, Thomas. Failure of metals III: Fracture and fatigue of nanostructured metallic materials. In: Acta Materialia, Vol. 107, p. 508-544 (2016)

Pineau, A. ; Benzerga, A.A. ; Pardoen, Thomas. Failure of metals I: Brittle and ductile fracture. In: Acta Materialia, Vol. 107, p. 424-483 (2016)

Ben Bettaieb, Mohamed ; Van Hoof, Thibaut ; Minnebo, Hans ; Pardoen, Thomas ; Dufour, Philippe ; Jacques, Pascal ; Habraken, Anne-Marie. Micromechanics-Based Damage Analysis of Fracture in Ti5553 Alloy with Application to Bolted Sectors. In: Journal of Materials Engineering and Performance, Vol. 24, no. 3, p. 1262-1278 (March 2015)

Crucifix, S. ; van der Rest, Camille ; Jimenez Mena, Norberto ; Jacques, Pascal ; Simar, Aude. Modelling thermal cycles and intermetallic growth during friction melt bonding of ULC steel to aluminium alloy 2024-T3. In: Science and Technology of Welding and Joining (Print), Vol. 20, no.04, p. 319-324 (2015)

Debehets, Jolien ; Tacq, Jeroen ; Favache, Audrey ; Jacques, Pascal ; Seo, Jin Won ; Verlinden, Bert ; Seefeldt, Marc. Analysis of the variation in nanohardness of pearlitic steel: Influence of the interplay between ferrite crystal orientation and cementite morphology. In: Materials Science and Engineering A: Structural Materials: Properties, Microstructures and Processing, Vol. 616, no.--, p. 99-106 (2014)

Favache, Audrey ; Libralesso, Laure ; Jacques, Pascal ; Raskin, Jean-Pierre ; Bailly, Christian ; Nysten, Bernard ; Pardoen, Thomas. Fracture toughness measurement of ultra-thin hard films deposited on a polymer. In: Thin Solid Films, Vol. 550, no. 1, p. 464-471 (janvier 2014)

Bettaieb, Mohamed Ben ; Hoof, Thibaut Van ; Pardoen, Thomas ; Dufour, Philippe ; Lenain, Astrid ; Jacques, Pascal ; Habraken, Anne Marie. On the elasto-viscoplastic behavior of the Ti5553 alloy. In: Materials Science & Engineering A, Vol. 617, no.--, p. 97-109 (2014)

van der Rest, Camille ; Jacques, Pascal ; Simar, Aude. On the joining of steel and aluminium by means of a new friction melt bonding process. In: Scripta Materialia, Vol. 77, no. --, p. 25-28 (2014)

Pierman, Anne-Pascale ; Bouaziz, O. ; Pardoen, Thomas ; Jacques, Pascal ; Brassart, Laurence. The influence of microstructure and composition on the plastic behaviour of dual-phase steels. In: Acta Materialia, Vol. 73, no.--, p. 298-311 (Online May 2014)

Roy, Geoffrey ; Matagne, Ernest ; Jacques, Pascal. A Global Design Approach for Large-Scale Thermoelectric Energy Harvesting Systems. In: Journal of Electronic Materials, Vol. 42, no.7, p. 1781-1788 (2013)

Galceran, M. ; Albou, A. ; Renard, K. ; Coulombier, Michaël ; Jacques, Pascal ; Godet, S.. Automatic Crystallographic Characterization in a Transmission Electron Microscope: Applications to Twinning Induced Plasticity Steels and Al Thin Films. In: Microscopy and Microanalysis, Vol. 19, no.03, p. 693-697 (2013)

Sun, F. ; Zhang, J.Y. ; Marteleur, Matthieu ; Gloriant, T. ; Vermaut, P. ; Laillé, D. ; Castany, P. ; Curfs, C. ; Jacques, Pascal ; Prima, F.. Investigation of early stage deformation mechanisms in a metastable β titanium alloy showing combined twinning-induced plasticity and transformation-induced plasticity effects. In: Acta Materialia, Vol. 61, no.17, p. 6406-6417 (2013)

Albou, Adeline ; Galceran, M. ; Renard, Krystel ; Godet, S. ; Jacques, Pascal. Nanoscale characterization of the evolution of the twin-matrix orientation in Fe-Mn-C twinning-induced plasticity steel by means of transmission electron microscopy orientation mapping. In: Scripta Materialia, Vol. 68, no. 6, p. 400-403 (2013)

Marteleur, Matthieu ; Sun, Fan ; Gloriant, Thierry ; Vermaut, Philippe ; Jacques, Pascal ; Prima, Frédéric. On the design of new β-metastable titanium alloys with improved work hardening rate thanks to simultaneous TRIP and TWIP effects. In: Scripta Materialia, Vol. 66, no. 10, p. 749-752 (2012)

Renard, Krystel ; Idrissi, Hosni ; Schryvers, Dominique ; Jacques, Pascal. On the stress state dependence of the twinning rate and work hardening in twinning-induced plasticity steels. In: Scripta Materialia, Vol. 66, no. 12, p. 966-971 (2012)

Renard, Krystel ; Jacques, Pascal. On the relationship between work hardening and twinning rate in TWIP steels. In: Materials Science and Engineering A, Vol. 542, no. --, p. 8-14 (2012)

Martin, Guilhem ; Kumar Yerra, Sampath ; Bréchet, Yves ; Véron , Muriel ; Mithieux, Jean-Denis ; Chéhab, Béchir ; Delannay, Laurent ; Pardoen, Thomas. A Macro- and micromechanics investigation of hot cracking in duplex steels. In: Acta Materialia, Vol. 60, no. 11, p. 4646-4660 (June 2012)

Simar, Aude ; Bréchet, Yves ; de Meester de Betzenbroeck, Bruno ; Denquin, Anne ; Gallais, Christophe ; Pardoen, Thomas. Integrated modeling of friction stir welding of 6xxx series Al alloys: Process, microstructure and properties. In: Progress in Materials Science, Vol. 57, no. 1, p. 95-183 (2012)

Tekoglu, Cihan ; Leblond, Jean-Baptiste ; Pardoen, Thomas. A criterion for the onset of void coalescence under combined tension and shear. In: Journal of the Mechanics and Physics of Solids, Vol. 60, no. 7, p. 1363-1381 (2012)

Lecarme, Liza ; Tekoglu, Cihan ; Pardoen, Thomas. Void growth and coalescence in ductile solids with stage III and stageIV strain hardening. In: International Journal of Plasticity, Vol. 27, no. 8, p. 1203-1223 (2011)

Scheyvaerts, F. ; Onck, P.R. ; Tekoglu, Cihan ; Pardoen, Thomas. The growth and coalescence of ellipsoidal voids in plane strain under combined shear and tension. In: Journal of the Mechanics and Physics of Solids, Vol. 59, no. 2, p. 373-397 (2011)

Van Ende, Marie-Aline ; Guo, Muxing ; Proost, Joris ; Blanpain, Bart ; Wollants, Patrick. Formation and morphology of Al2O3 inclusions at the onset of liquid Fe deoxidation by Al addition. In: ISIJ International, Vol. 51, no. 1, p. 27-34 (2011)

Chehab, B. ; Brechet, Y. ; Veron, M. ; Jacques, Pascal ; Parry, G. ; Mithieux, J. -D. ; Glez, J. -C. ; Pardoen, Thomas. Micromechanics of hightemperature damage in dual-phase stainless steel. In: Acta Materialia, Vol. 58, no. 2, p. 626-637 (2010)

Idrissi, H. ; Renard, Krystel ; Ryelandt, Laurence ; Schryvers, D. ; Jacques, Pascal. On the mechanism of twin formation in Fe-Mn-C TWIP steels. In: Acta Materialia, Vol. 58, no. 7, p. 2464-2476 (2010)

Idrissi, H. ; Renard, Krystel ; Schryvers, D. ; Jacques, Pascal. On the relationship between the twin internal structure and the workhardening rate of TWIP steels. In: Scripta Materialia, Vol. 63, no. 10, p. 961-964 (2010)

Nakano, Jinichiro ; Jacques, Pascal. Effects of the thermodynamic parameters of the hcp phase on the stacking fault energy calculations in the Fe-Mn and Fe-Mn-C systems. In: CALPHAD : the international research journal for calculation of phase diagrams, Vol. 34, no. 2, p. 167-175 (2010)

Renard, Krystel ; Ryelandt, Sophie ; Jacques, Pascal. Characterisation of the Portevin-Le Chatelier effect affecting an austenitic TWIP steel based on digital image correlation. In: Materials Science and Engineering A: Structural Materials: Properties, Microstructures and Processing, Vol. 527, no. 12, p. 2969-2977 (2010)

Nielsen, K. L. ; Pardoen, Thomas ; Tvergaard, V. ; de Meester, B. ; Simar, Aude. Modelling of plastic flow localisation and damage development in friction stir welded 6005A aluminium alloy using physics based strain hardening law. In: International Journal of Solids and Structures, Vol. 47, no. 18-19, p. 2359-2370 (2010)

Van Ende, Marie-Aline ; Guo, Muxing ; Proost, Joris ; Blanpain, Bart ; Wollants, Patrick. Interfacial reactions between oxygen-containing Fe and Al at the onset of liquid Fe deoxidation by Al addition. In: ISIJ International, Vol. 50, no. 11, p. 1552-1559 (2010)

Idrissi, H. ; Ryelandt, Laurence ; Veron, M. ; Schryvers, D. ; Jacques, Pascal. Is there a relationship between the stacking fault character and the activated mode of plasticity of Fe-Mn-based austenitic steels?. In: Scripta Materialia, Vol. 60, no. 11, p. 941-944 (2009)

Van Ende, Marie-Aline ; Guo, M. X. ; Zinngrebe, E. ; Dekkers, R. ; Proost, Joris ; Blanpain, B. ; Wollants, P. Morphology and growth of alumina inclusions in Fe-Al alloys at low oxygen partial pressure. In: Ironmaking & Steelmaking : processes, products and applications, Vol. 36, no. 3, p. 201-208 (2009)

Delannay, Laurent ; Jacques, Pascal ; Pardoen, Thomas. Modelling of the plastic flow of trip-aided multiphase steel based on an incremental mean-field approach. In: International Journal of Solids and Structures, Vol. 45, no. 6, p. 1825-1843 (2008)

Lacroix, G. ; Pardoen, Thomas ; Jacques, Pascal. The fracture toughness of TRIP-assisted multiphase steels. In: Acta Materialia, Vol. 56, no. 15, p. 3900-3913 (2008)

Simar, Aude ; Brechet, Y. ; de Meester, B. ; Denquin, A. ; Pardoen, Thomas. Microstructure, local and global mechanical properties of friction stir welds in aluminium alloy 6005A-T6. In: Materials Science and Engineering A: Structural Materials: Properties, Microstructures and Processing, Vol. 486, no. 1-2, p. 85-95 (2008)

Delincé, Marc ; Brechet, Y. ; Embury, J. D. ; Geers, M. G. D. ; Jacques, Pascal ; Pardoen, Thomas. Structure-property optimization of ultrafinegrained dual-phase steels using a micro structure-based strain hardening model. In: Acta Materialia, Vol. 55, no. 7, p. 2337-2350 (2007)

Huang, J. ; Vogel, S. C. ; Poole, W. J. ; Militzer, M. ; Jacques, Pascal. The study of low-temperature austenite decomposition in a Fe-CMn-Si steel using the neutron Bragg edge transmission technique. In: Acta Materialia, Vol. 55, no. 8, p. 2683-2693 (2007)

Jacques, Pascal ; Furnemont, Q. ; Lani, Frédéric ; Pardoen, Thomas ; Delannay, Francis. Multiscale mechanics of TRIP-assisted multiphase steels: I. Characterization and mechanical testing. In: Acta Materialia, Vol. 55, no. 11, p. 3681-3693 (2007)

Lani, Frédéric ; Furnemont, Q. ; Van Rompaey, T. ; Delannay, Francis ; Jacques, Pascal ; Pardoen, Thomas. Multiscale mechanics of TRIP-assisted multiphase steels: II. Micromechanical modelling. In: Acta Materialia, Vol. 55, no. 11, p. 3695-3705 (2007)

Lassance, Denis ; Fabregue, D. ; Delannay, Francis ; Pardoen, Thomas. Micromechanics of room and high temperature fracture in 6xxx Al alloys. In: Progress in Materials Science, Vol. 52, no. 1, p. 62-129 (2007)

Delincé, Marc ; Jacques, Pascal ; Pardoen, Thomas. Separation of size-dependent strengthening contributions in fine-grained Dual Phase steels by nanoindentation. In: Acta Materialia, Vol. 54, no. 12, p. 3395-3404 (2006)

Gaude-Fugarolas, D ; Jacques, Pascal. A new physical model for the kinetics of the bainite transformation. In: ISIJ International, Vol. 46, no. 5, p. 712-717 (2006)