A Comparative Study on the Cyclic Behavior of Austenite/Ferrite Phases Characterized by the Nano-Indentation

摘要：

　　The cyclic deformation behavior of the austenite and ferrite phase in an austenite-ferrite duplex stainless steel was studied by using the load-controlled cyclic nano-indentation approach.The results showed that the maximum penetration depth onto both austenite and ferrite phases increased continuously while the rate decreased gradually and finally reached to a constant during the repeated indentation.Both transient state and quasi-steady state were observed for the penetration depth per cycle on both of the austenite and ferrite phases with the increased cycles.By contrast,both the penetration depth and rate per cycle into the austenite phase were larger than those into the ferrite phase.This was ascribed to the stress-induced densification in the austenite and ferrite phases and strain-induced transformed martensite in the austenite phase.

关键词： (1) duplex stainless steel (2) austenite (3) ferrite (4) cyclic nano-indentation (5) cyclic deformation behavior

作者: Yuanyuan Cui Yunfei Jia Fuzhen Xuan

作者单位: Key Laboratory of Safety Science of Pressurized System,MOE,School of Mechanical Engineering,East China University of Science and Technology,130,Meilong Street,PO Box 402,Shanghai 200237,PR China

会议类型: 国际会议

会议名称: 2016 International Symposium on Structural Integrity，ISSI—2016(2016国际结构完整性研讨会)

会议地点: 天津

会议语种:英文

页码: 137-141

在线出版日期: 2016-05-26（万方平台首次上网日期，不代表论文的发表时间）