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研究了Fe-Cr-Ni-Co-Mo马氏体时效不锈钢固溶处理温度与奥氏体形成过程,马氏体相变后的残余奥氏体,以及500℃时效形成逆转变奥氏体之间的关系,并探索了其对力学性能,尤其是低温韧性的影响。结果表明:低温固溶处理形成的马氏体具有较高的时效强化效应,残余奥氏体和时效形成的逆转变奥氏体显著改善低温韧性,这使得Fe-Cr-Ni-Co-Mo马氏体时效不锈钢低温固溶处理后既有较高的强度,又有较高的低温冲击韧度。
The effects of solution treatment temperature and austenite forming process on martensitic stainless steel Fe-Cr-Ni-Co-Mo aging austenite, retained austenite after martensitic transformation, and austenite at 500 ℃ were studied And explored the impact on the mechanical properties, especially the low temperature toughness. The results show that the martensite formed by solution treatment at low temperature has a higher aging strengthening effect, and the retained austenite and aged austenite significantly improve the low temperature toughness, which makes the Fe-Cr-Ni-Co-Mo horse After the austenitic stainless steel solution treatment at low temperature, both high strength, high impact toughness at low temperature.