HOT DEFORMATION BEHAVIOR OF NF709 AUSTENITIC HEAT-RESISTANT STEEL

摘要：

　　The hot deformation behavior of NF709 austenitic heat-resistant steel was investigated over the temperature range of 930–1230℃ 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℃ to 1230℃ with large deformation or at relatively high temperature and 5s-1 with small deformation.

关键词： NF709 steel hot compress deformation flow stress Z parameter microstructure

作者: Wang Jingzhong Wang Kuaishe Du Zhongze Liu Zhengdong Baohansheng

作者单位: School of Metallurgy and Engineering,Xian University of architecture and technology,Xian,Shaanxi,1 Central Iron and Steel Research Institute,Beijing,76 XueYuanNan,100081,China

会议类型: 国际会议

会议名称: Energy Materials 2014(第一届能源材料国际会议)

会议地点: 西安

会议语种:英文

页码: 357-363

在线出版日期: 2014-11-04（万方平台首次上网日期，不代表论文的发表时间）