Misorientation development in grains of tensile strained and crept 2.25%Cr–1%Mo steel

An EBSD Study of the Deformation of Service-Aged 316 Austenitic Steel

“…The consistent indications of an effect of strain rate on the misorientations produced during plastic deformation to a particular strain found in this study are in contrast to previous comparisons on a 2.25%Cr-1%Mo steel between tensile and creep deformations at 873K [24] which found no significant difference. However the metric used in that case considered only a very limited number of measurement points in each grain which could have reduced its sensitivity to orientation changes, especially for the creep deformation which is heterogeneous [60].…”

SKPFM measured Volta potential correlated with strain localisation in microstructure to understand corrosion susceptibility of cold-rolled grade 2205 duplex stainless steel

“…Plastic deformation in polycrystalline material is generally heterogeneous, and leads to the development of misorientation variations and gradients in the microstructure, typically associated with strain localisation [1]. In duplex stainless steels, strain localisation is complex due to the mismatch of mechanical properties between body-centred-cubic ferrite (δ -bcc) and face-centred-cubic austenite ( -fcc), which manifests itself during plastic deformation.…”

“…The magnitude of misorientation within grains increases with the introduction of plastic strain, which is often used as a quantitative measure to describe the degree of microstructure deformation [1]. However, the introduction of plastic strain can also result in sub-structure formation associated with the re-arrangement of dislocations.…”

“…However, the introduction of plastic strain can also result in sub-structure formation associated with the re-arrangement of dislocations. Free dislocations generated during plastic deformation can readily re-arrange themselves, leading to the development of Low-Angle Grain Boundaries (LAGB) [1,8,9]. Plastic deformation results in an increase of the dislocation density which also affects local surface work function and hence the electrochemical potential [10].…”

Stress Evaluation at the Maximum Strained State by EBSD and Several Residual Stress Measurements for Plastic Deformed Austenitic Stainless Steel

“…In contrast, the EBSD method has been studied by many researchers as an analytical method for plastic strain [6] [7] [8] [9] [10]. Considering that plastic strain remains unchanged in areas around damage due to a crack (excluding the immediate vicinity even after residual stress is released), for example, the EBSD method can significantly contribute to understanding actual phenomena in a manner that estimates the stress before the damage on the basis of the evaluation of plastic strain obtained through the EBSD method.…”