Effect of the microstructure on the plastic deformation behavior of thermal aging duplex stainless steel
Duplex stainless steels (DSS) are susceptible to thermal aging embrittlement during long-term operation at temperatures in the range 290-325 ℃.The flow behavior of DSS significantly could be different from one of the single phase austenitic or ferric stainless steels.This article overviews the effects of thermal aging DSS on the micro structural evolution after he plastic deformation behavior.After aging at 400 ℃ as long as 10,000 h, austenite play an important role in the plastic activity during tensile deformation, Σ 3 twins boundaries has been found in austenite grains at high level of strain regions.At same time, a few ferrite phase also appears twins for the thermal aging embrittlement.The appearance of these low-angle boundaries is due to the accumulation of dislocations in the material.As deformation proceeds,the matrix losing the KS orientation relationship, the orientation loss become more obvious after aging 10,000h.
Duplex stainless steel Thermal aging Plastic deformation Electron back-scattering diffraction
Yanli Wang Xuehui Sun
University of Science and Technology Beijing, State Key Laboratory for Advanced Metals and Materials, Beijing 100083, China
国内会议
2014年海峡两岸破坏科学与材料试验学术会议暨第十二届破坏科学研讨会、第十届全国MTS材料试验学术会议
台南
英文
1-11
2014-10-22（万方平台首次上网日期，不代表论文的发表时间）