Latest news of the group
EuroMech Colloquium on Mechanics of Interfaces
We are the International colloquium on Mechanics of interfaces (Euromech colloquium 653) organized with the support of the European Mechanics Society, in Metz. Joé Petrazoller will be presenting his work on “Micromechanical modelling and atomistic simulations of solute atom segregation towards grain boundaries”. Julien Guénolé will be presenting his work on “Dislocation density fields for bridging length scales in interface-dominated nanomechanics”.
The colloquium focuses on the mechanics of Interfaces for Polycrystals and Composites, by using experimental methods, multiscale modelling methods including discrete (atomistics, etc.) and continuum-based models, classical and physics-informed machine-learning methods.
Atomistic machine learning predicts magnesium segregation
In this new publication, we have combined atomistic simulations and machine learning to predict grain boundary segregation in magnesium alloys with unprecedented accuracy. By capturing diverse atomic environments and stress effects, the study reveals neodymium as a promising solute for grain boundary engineering. This breakthrough paves the way for stronger, lighter, and more durable magnesium alloys. The manuscript is now published: Xie et al., Predicting grain boundary segregation in magnesium alloys: An atomistically informed machine learning approach, Journal of Magnesium and Alloys 13 (2025) 2636 [open access]
Nanoscale Mechanisms Limiting Non-Basal Plasticity in Magnesium
Our new study shade new light on why magnesium, a promising lightweight metal, suffers from limited ductility. Using in-situ TEM and atomistic simulations, we discovered that <c+a> dislocations—initially key to plastic deformation—quickly become inactive, triggering dislocation avalanches and twinning. The culprit? Stacking faults that block further dislocation motion, offering crucial insights for designing tougher, more formable magnesium alloys. The manuscript is now published: Jeong et al., Nanoscale Mechanisms Limiting Non-Basal Plasticity in Magnesium, Acta Materialia 296 (2025) 121261.
Meeting of the european network MecaNano in Krakow, May 19-21
MecaNano stands for "European Network for the Mechanics of Matter at the Nano-Scale" is a European Cooperation in Science & Technology (COST) Action running until 2026. The Action is intended as a broad international cooperation aiming to advance the multiscale understanding of the mechanical behavior of nanostructured materials.
The 3rd General Meeting in Krakow (Poland), May 19-21 2025, will bring together all stakeholders of the MecaNano community in order to discuss scientific progress in our field(s) and plan common activities. As co-leader of the working group "Experimental and simulation challenges" of the network and active stakeholder of the MecaNano community, we will be attending the meeting.
Elastic anisotropy and polarizability on solute segregation
Joé Petrazoller, doctoral researcher in our group, just got his first article published in Computational Materials Science. His work explors the effects of elastc amistropy on solute segregation at low-angle grain boundaries, and the role of the polarizability tensor as intrisinc material property to evaluates segregation tendancy. The manuscript is available : J. Petrazoller et al., On the effect of elastic anisotropy and polarizability on solute segregation at low-angle grain boundaries, Computational Materials Science 249 (2025) 113642 [open access].
Congratulation to Houssam for his successfull PhD defense
Houssam Kharouji, PhD student in the group since November 2021, successfully defended his PhD thesis on December 5, 2024. in front of a jury composed of Dr. Forest, Dr. Upadhyay, Dr. Tanguy, Dr. Thuillier, Dr. Berbenni and Dr. Dezerald, Houssam has defended his work on the micromechanical modeling of crystal defects informed by atomistic simulation [LinkedIn].