Type 316 steels have been heavily utilized as the structural material in many construction equipment and infrastructures. This paper reports the characterization of degradation in 316 austenitic stainless steel during the plastic deformation. The in-situ EBSD results revealed that, with the increase of plastic strain, the band contrast (BC) value progressively decreased in both grain and grain boundaries, and the target surface becomes uneven after the plastic tensile, which indicates that the increase of surface roughness. Meanwhile, the KAM and ρ_GND values are low in the origin specimen but increased significantly after the in-situ tensile. The results indicated that the KAM and ρ_GND are closely related to the deformation degree of the materials, which can be used as the indicator for assessing the degradation of 316 steel. Besides, the re-orientation of grain occurred after the tensile deformation, which can be recognized from the lattice orientation and local orientation maps.

316型钢已在许多建筑设备和基础设施中大量用作结构材料。本文报道了在塑性变形过程中316奥氏体不锈钢的降解特征。原位EBSD结果表明，随着塑性应变的增加，晶界和晶界的能带对比度（BC）值逐渐减小，塑性拉伸后目标表面变得不均匀，表明表面增加。粗糙度。同时，KAM和ρ _GND值在原点试样低，但在原位拉伸后显著增加。结果表明，锦和ρ _GND与材料的变形程度密切相关，可作为评估316钢性能的指标。此外，晶粒的重新取向在拉伸变形后发生，这可以从晶格取向图和局部取向图识别。