Members

IMMC

Juan Guillermo Santos Macias
Contact


Funding: FRIA
Supervisor(s): Aude Simar, Pascal Jacques

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.

IMMC main research direction(s):
Processing and characterisation of materials

Keywords:
microstructure-processing relationships
selective laser melting (slm)
welding and joining

Research group(s): IMAP

  

Recent publications

See complete list of publications

Journal Articles


1. Zhao, Lv; Santos Macias, Juan Guillermo; Douillard, Thierry; Li, Zhenhuan; Simar, Aude. Unveiling damage sites and fracture path in laser powder bed fusion AlSi10Mg: Comparison between horizontal and vertical loading directions. In: Materials Science and Engineering: A, Vol. 807, p. 140845 (2021). doi:10.1016/j.msea.2021.140845. http://hdl.handle.net/2078.1/242891

2. Zhao, Lv; Santos Macias, Juan Guillermo; Dolimont, Adrien; Simar, Aude; Rivière-Lorphèvre, Edouard. Comparison of residual stresses obtained by the crack compliance method for parts produced by different metal additive manufacturing techniques and after friction stir processing. In: Additive Manufacturing, Vol. 36, p. 101499 (2020). doi:10.1016/j.addma.2020.101499. http://hdl.handle.net/2078.1/232527

3. Santos Macias, Juan Guillermo; Douillard, Thierry; Zhao, Lv; Maire, Eric; Pyka, Grzegorz; Simar, Aude. Influence on microstructure, strength and ductility of build platform temperature during laser powder bed fusion of AlSi10Mg. In: Acta Materialia, Vol. 201, p. 231-243 (2020). doi:10.1016/j.actamat.2020.10.001. http://hdl.handle.net/2078.1/236105

4. Simar, Aude; Hannard, Florent; Lezaack, Matthieu Baudouin; Santos Macias, Juan Guillermo; Zhao, Lv; Pyka, Grzegorz. Extended durability for high strength aluminium alloys. In: The Innovation Patform, Vol. on line (2020). http://hdl.handle.net/2078.1/237842

5. Santos Macias, Juan Guillermo; Elangeswaran, Chola; Zhao, Lv; Van Hooreweder, Brecht; Adrien, Jérôme; Maire, Eric; Buffière, Jean-Yves; Ludwig, Wolfgang; Jacques, Pascal; Simar, Aude. Ductilisation and fatigue life enhancement of selective laser melted AlSi10Mg by friction stir processing. In: Scripta Materialia, Vol. 170, p. 124-128 (2019). doi:10.1016/j.scriptamat.2019.05.044. http://hdl.handle.net/2078.1/216469

6. Zhao, Lv; Santos Macias, Juan Guillermo; Ding, Lipeng; Idrissi, Hosni; Simar, Aude. Damage mechanisms in selective laser melted AlSi10Mg under as built and different post-treatment conditions. In: Materials Science and Engineering: A, Vol. 764, p. 138210 (2019). doi:10.1016/j.msea.2019.138210. http://hdl.handle.net/2078.1/220043


Conference Papers


1. Santos Macias, Juan Guillermo; Douillard, Thierry; Zhao, Lv; Maire, Eric; Pyka, Grzegorz; Simar, Aude. Build platform temperature during laser powder bed fusion of AlSi10Mg; influence on 3D microstructure, strength and ductility. 2021 xxx. http://hdl.handle.net/2078.1/244689

2. van der Rest, Camille; Santos Macias, Juan Guillermo; Zhao, Lv; Marteleur, Matthieu; Jacques, Pascal; Simar, Aude. Enhancement of the mechanical behavior of SLM AlSi10Mg by optimized thermomechanical postprocessing routes. In: THERMEC‘2021 – Book of Abstracts, 2021, p. 701 (#1390) xxx. http://hdl.handle.net/2078.1/244611

3. Dedry, Olivier; Bouffioux, Chantal; Tran, Hoang Son; Santos Macias, Juan Guillermo; Habraken, Anne Marie; Mertens, Anne. Identification of AlSi10Mg matrix behavior by nanoindentation. 2021 xxx. http://hdl.handle.net/2078.1/244706

4. Santos Macias, Juan Guillermo. Post-treatment of LPBF AlSi10Mg for fatigue resistance enhancement. 2020 xxx. http://hdl.handle.net/2078.1/238048

5. Santos Macias, Juan Guillermo; Zhao, Lv; Elangeswaran, Chola; Van Hooreweder, Brecht; Adrien, Jérôme; Buffière, Jean-Yves; Maire, Eric; Simar, Aude. Friction stir processing of selective laser melted AlSi10Mg for mechanical behaviour enhancement. Study on damage mechanism evolution. 2019 xxx. http://hdl.handle.net/2078.1/220260

6. Simar, Aude; Santos Macias, Juan Guillermo; Poncelet, Olivier; van der Rest, Camille; Marteleur, Matthieu; Elangeswaran, Chola; Van Hooreweder, Brecht; Maire, Eric; Adrien, Jérôme; Buffière, Jean-Yves. Improving fatigue resistance of selective laser melted aluminum alloy AlSi10Mg. 2019 xxx. http://hdl.handle.net/2078.1/207818

7. Santos Macias, Juan Guillermo; Zhao, Lv; Simar, Aude. Damage mechanisms in selective laser melted AlSi10Mg under as built and different post-treatment conditions. 2019 xxx. http://hdl.handle.net/2078.1/216109

8. Dolimont, A.; Santos Macias, Juan Guillermo; Zhao, Lv; Simar, Aude; Rivière-Lorphèvre, E.. Comparing residual stresses in metal powder bed additive manufacturing (SLM and EBM). 2019 xxx. http://hdl.handle.net/2078.1/216110

9. Santos Macias, Juan Guillermo; Buffière, Jean-Yves; Maire, Eric; Adrien, Jérôme; Elangeswaran, Chola; Cutolo, Antonio; Van Hooreweder, Brecht; Lani, Frédéric; Jacques, Pascal; Simar, Aude. On the mechanical behaviour of SLM AlSi10Mg and its improvement by friction stir processing. 2018 xxx. http://hdl.handle.net/2078.1/195889

10. Simar, Aude; Delroisse, Pauline; Jacques, Pascal; Marteleur, Matthieu; Poncelet, Olivier; Santos Macias, Juan Guillermo; van der Rest, Camille. Mechanical properties of selective laser melted aluminium alloy AlSi10Mg: from bulk to thin structures. 2018 xxx. http://hdl.handle.net/2078.1/207816


Dissertations


1. Santos Macias, Juan Guillermo. Laser powder bed fusion AlSi10Mg damage and fatigue resistance improvement by post-processing, prom. : Simar, Aude, 22/04/2021. http://hdl.handle.net/2078.1/245411