The inclusion and role of micro mechanical residual stress on deformation of stainless steel type 316L at grain level

• DOI: 10.1016/j.msea.2023.145096
• Publication Date: 2023-05-02T20:18:37Z
• Authors: Edward William Ho...; Eralp Demir; Dylan Agius; Anna Kareer; David M. Collins; Mahmoud Mostafavi; David Knowles
• Keywords: Least-squares function approximation

Validating crystal plasticity models requires careful consideration of all aspects. The initial conditions are important when comparing a model and experiment, as the residual stresses within material can be significant but often overlooked due to experimental limitations. Therefore, their inclusion has potential improve predictions. This work explores efficacy using type-III elastic stresses, measured high resolution electron backscatter diffraction (HR-EBSD),as pre-test stress distributions in 316L stainless steel. Two methods processing collected (direct least squares solver) were used. A existing method was used incorporate measurements stresses; results compared with each other, containing no experiment. helped remove extreme calculated by cross-correlation at points mean angular error. modelled from both direct did not fully match experimentally observed similarities seen some grains. After loading, little difference between models, without stress, implying negligible effect on deformation response material. However, predicted distribution after deformation, suggesting further physical effects must accounted for models.