Investigation of nanoscale strains at the austenitic stainless steel 316L surface: Coupling between nanogauges gratings and EBSD technique during in situ tensile test

摘要: Abstract The understanding of the mechanical properties at microstructure scale is a key factor for material macroscopic behavior comprehension and its appropriate engineering structure. In this study, new approach which based on combination both nanogauges displacements monitoring electron backscatter diffraction (EBSD) techniques performed under Scanning Electron Microscope (SEM) during in-situ tensile tests proposed. Strain evolutions components can be compared to crystallographic data. was applied austenitic stainless steel 316L specimen in order bring proof concept put into evidence potential. Among information interest obtained through technique, one cite possibility highlight strain initiations vicinities twins their test or heterogeneities surface influence over elongations rotations components, tends reorganized balance stress. Besides, such expressed terms misorientations quantified from EBSD twinning slip activities also correlated hardening thanks method characterization. As characterizing plastic domain, technique show how some grains may activate more than system. Finally, it has been here demonstrated complementary powerful these two considered give access better properties.