Hot deformation behavior of super austenitic stainless steel
ZENG Li1，ZHANG Wei1，WANG Qi1，ZHU Li-li2
（1. State Key Laboratory of Advanced Stainless Steel， Taiyuan Iron and Steel （Group） Co.， Ltd.， Taiyuan 030003，Shanxi， China 2. Foreign Language Department， Taiyuan Institute of Technology， Taiyuan 030003， Shanxi， China）
Abstract：In order to study the high temperature deformation behavior of super austenitic stainless steel Cr20Ni24Mo6N，isothermal thermal compression test was carried out by Gleeble thermal simulation test machine，and the processing map of the alloy was established.The results show that the flow stress curves of Cr20Ni24Mo6N show the typical characteristics of “Working Hardening+Dynamic Recrystallization Softening”when the deformation temperature is 1 000-1 200 ℃. The hot deformation activation energy is 678.656 kJ/mol. Through the comprehensive analysis of the microstructure and the processing map，the suitable hot working process windows of Cr20Ni24Mo6N superaustenitic stainless steel is obtained，which the strain rate is 10 s－1，the strain is about 0.5-0.8 and the temperature is about 1 150-1 200 ℃.
收稿日期: 2017-04-21
出版日期: 2017-09-29
引用本文:
曾 莉，张 威，王 琦，朱丽丽. 超级奥氏体不锈钢的高温变形行为[J]. 钢铁, 2017, 52(10): 72-77.
ZENG Li，ZHANG Wei，WANG Qi，ZHU Li-li. Hot deformation behavior of super austenitic stainless steel. Iron and Steel, 2017, 52(10): 72-77.
2017, Vol. 52 
