通过对一种新型形变诱发马氏体时效不锈钢的显微组织与力学性能的研究,发现冷变形可诱发钢中的奥氏体发生马氏体相变,经时效处理后,可在提高强度的同时,仍保持一定的塑韧性。钢中δ铁素体在冷变形前后含量未发生变化。冷变形后钢的拉伸试样断口呈现分层特征,主要是由于基体中沿轧向长条状分布的δ铁素体,割裂了基体的连续性所致。 Through the study of the microstructure and mechanical properties of a new type of strain-induced martensitic stainless steel, it has been found that cold deformation can induce martensitic transformation of austenite in steel. After aging treatment, At the same time, still maintain a certain degree of plasticity and toughness. The content of δ ferrite in steel did not change before and after cold deformation. After cold deformation, the tensile fracture of the steel presents stratified features mainly due to the continuity of the matrix caused by the δ-ferrite distributed along the strip in the rolling direction.