Effects of ageing temperature on reverse martensite to austenite transformation in a low carbon martensitic precipitation hardening stainless steel

摘要：

　　Effects of ageing temperature on reverse transformation of martensite to austenite were studied by using thermal dilatometry, XRD and SEM.The volume fraction of reversed austenite is in-situ measured by using high temperature XRD and dilatometry during aging process.The maximum volume fraction of reversed austenite during aging process increases and it takes rather shorter time to reach the maximum value when ageing temperature increases.The effect of ageing temperature on transformation mechanisms and kinetics of reverse martensite to austenite transformation is discussed.The amount of retained austenite at room temperature is affected by the volume fraction of reversed austenite obtained during ageing and the thermal stability of reversed austenite, the maximum amount of retained austenite is obtained after ageing at 630 ℃.

关键词： Ageing Reverse transformation Transformation kinetics Martensitic stainless steel

作者: XU Wen-bo SHI Wei WANG Gang

作者单位: Department of Mechanical Engineering, Tsinghua University, Beijing, China

会议类型: 国际会议

会议名称: The 2nd International Conference on Energy and the Future of Heat Treatment and Surface Engineering(第2届未来热处理及表面工程与能源国际会议暨2014年北京香山材料热处理与表面工程国际论坛)

会议地点: 北京

会议语种:英文

页码: 83-88

在线出版日期: 2014-10-11（万方平台首次上网日期，不代表论文的发表时间）