东北大学学报（自然科学版）

东北大学学报(自然科学版) ›› 2011, Vol. 32 ›› Issue (10): 1406-1409.DOI: -

• 论著 • 上一篇    下一篇

高纯Cr17铁素体不锈钢的热变形行为

高飞;刘振宇;王国栋;   

  1. 东北大学轧制技术及连轧自动化国家重点实验室;
  • 收稿日期:2013-06-19 修回日期:2013-06-19 发布日期:2013-04-04
  • 通讯作者: -
  • 作者简介:-
  • 基金资助:
    国家自然科学基金资助项目(50734002,51004035)

Hot deformation behavior of high-purified 17%Cr ferritic stainless steel

Gao, Fei (1); Liu, Zhen-Yu (1); Wang, Guo-Dong (1)   

  1. (1) State Key Laboratory of Rolling and Automation, Northeastern University, Shenyang 110819, China
  • Received:2013-06-19 Revised:2013-06-19 Published:2013-04-04
  • Contact: Gao, F.
  • About author:-
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摘要： 采用MMS200热/力模拟机及Thermo-Calc热力学计算方法,研究了高纯Cr17铁素体不锈钢在变形温度为600～1 100℃、应变速率为1～10 s-1条件下的热变形规律.结果表明,在热变形过程中,高纯Cr17铁素体不锈钢的组织均以铁素体为主,不存在γ/α相变且仅仅发生较快的动态回复软化;高纯Cr17铁素体不锈钢热的变形激活能为384.985 kJ/mol.在此基础上,确定了Z参数,并得到了高纯Cr17铁素体不锈钢的峰值应力σp与Z参数间的关系.

关键词: Cr17铁素体不锈钢, 热变形, Thermo-Calc, 动态回复

Abstract: The hot deformation behavior of high-purified 17%Cr ferritic stainless steel at strain rates from 1 s-1 to 10 s-1 and deformation temperatures from 600°C to 1100°C was investigated by Thermo-Calc thermodynamic calculation and MMS200 thermomechanical simulator. The results showed that the high-purified 17%Cr ferritic stainless steel presents a ferritic (α-Fe, bcc) microstructure without γ/α phase transformation and undergoes rapid dynamic recovery during the hot deformation. The high-purified 17%Cr ferritic stainless steel has activation energy of 384.985 kJ/mol for hot deformation. On this basis, Zener-Hollomon parameter can be determined and the correlation of Zener-Hollomon parameter with peak stress was obtained.

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