A Comparative Study of Various Flow Instability Criteria in Processing Map of TC21 Alloy

摘要：

Hot compression tests were conducted on the Gleeble1500D thermal simulating tester. Based on deformation behaviors and microstructural evolutions, different instability critical types of Prasad,Gegel,Malas,Murty and Semiatin were compared,and the physical significance of parameters was analyzed in this paper. Meanwhile, the obtained processing map of different instability critical. It can be got that instability critical did not occur and average power dissipation rate was larger than 50％ at the temperature of 830～910℃ and 950～ 1010℃,corresponding the strain rate of 5 *10-4s-1 to 10-2s-1 and 5*10-4s-1 to 10-3s-1,respectively. The two areas are appropriate for the processing deformation of TC21 alloy.

关键词： TC21 alloy hot compression tests, flow instability criterion processing map dynamic recrystallization

作者: Zhou Ge Ding Hua Cao Fu-rong

作者单位: Northeastern University,Shenyang 110819,China

会议类型: 国际会议

会议名称: The 12th World Conference Titanium(第十二届世界钛会 Ti-2011)

会议地点: 北京

会议语种:英文

页码: 282-286

在线出版日期: 2011-06-19（万方平台首次上网日期，不代表论文的发表时间）