Characterization and numerical modeling of materials nanocrystallized by Surface Mechanical Attrition Treatment (SMAT)
During the last decade, Surface Mechanical Mechanical Attrition Treatment (SMAT) technique is widely studied due to the beneficial effect of obtained parameters such as nanostructured layer, work hardening and compressive residual stress. In this work, characterization of mechanical properties of materials treated by SMAT under monotonic and cyclic loadings is carried out using micro-pillar compression technique and low cycle fatigue (LCF) tests, respectively. Numerical modeling and simulation using single crystal plasticity approach is also performed in order to analyze the deformation behavior of SMAT treated materials. Comparison between numerical simulation and experimentation is given as well.
Dr. Zhidan Sun obtained his Engineer’s degree in Mechanics from ENSMM in 2004, and his Ph.D in Materials Engineering from INSA Lyon in 2008. After spending several years as post-doctoral researcher in MINES ParisTech and temporary lecturer in University of Versailles (UVSQ), he is currently assistant professor at the University of Technology of Troyes (UTT). His research interests are focused on mechanical properties of materials in relation to microstructural and environmental parameters. He have participated in several important projects supported, for example by French National Research Agency (ANR), and have published more than 20 papers in key journals such as «International Journal of Fatigue», «Materials Science and Engineering A», «Computational Materials Science» and in major international conferences in the field of Materials and Mechanics.