HOT DEFORMATION BEHAVIOR OF NF709 AUSTENITIC HEAT-RESISTANT STEEL

被引：0
|
作者：
Wang Jingzhong [1 ]
Wang Kuaishe [1 ]
Du Zhongze [1 ]
Liu Zhengdong [2 ]
Baohansheng [2 ]
机构：
[1] Xian Univ Architecture & Technol, Sch Met & Engn, Xian 710055, Shaanxi, Peoples R China
[2] Cent Iron & Steel Res Inst, Beijing 100081, Peoples R China
来源：
ENERGY MATERIALS CONFERENCE PROCEEDINGS 2014 | 2014年
关键词：
NF709; steel; hot compress deformation; flow stress; Z parameter; microstructure;
D O I：
暂无
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
The hot deformation behavior of NF709 austenitic heat-resistant steel was investigated over the temperature range of 930-1230 degrees C and strain rates range of 0.005-5 s(-1) using hot compression tests by Gleeble 3800 thermal mechanical simulator. The flow curves of tested steel were obtained corresponding to different deformation condition. The stress flow curves of tested steel were obtained and the relationship between microstructure and deformation condition were analyzed. The hot deformation activation energy of the tested steel was obtained 328kJ/mol and the hot deformation equation was established. Flow curves show that the flow instability easily occur at the strain rate of 0.005s(-1) and the temperature range from 930 degrees C to 1230 degrees C with large deformation or at relatively high temperature and 5 s(-1) with small deformation.
引用
收藏
页码：357 / 363
页数：7
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