A Comparative Study of Various Flow Instability Criteria in Processing Map of Superalloy GH4742

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	A Comparative Study of Various Flow Instability Criteria in Processing Map of Superalloy GH4742
其他题名	A Comparative Study of Various Flow Instability Criteria in Processing Map of Superalloy GH4742
	Zhou Ge 1; Ding Hua 1; Cao Furong 1; Zhang Beijiang 2
	2014
发表期刊	JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
ISSN	1005-0302
卷号	30 期号:3 页码:217-222
摘要	Hot compression tests were conducted on a Gleeble-1500D thermal simulating tester. Based on the deformation behavior and microstructural evolution of superalloy GH4742, different types of instability criteria of Prasad, Gegel, Malas, Murty and Semiatin were compared, and the physical significance of parameters was analyzed. Meanwhile, the processing maps with different instability criteria were obtained. It was shown that instability did not occur when average power dissipation rate was larger than 50% in the temperature range of 1020-1130 degrees C, corresponding to the strain rate range of 5 x 10(-4)-3.2 x 10(-3) s(-1). The domain is appropriate for the processing deformation of superalloy GH4742.
其他摘要	Hot compression tests were conducted on a Gleeble-1500D thermal simulating tester. Based on the deformation behavior and microstructural evolution of superalloy GH4742, different types of instability criteria of Prasad, Gegel, Malas, Murty and Semiatin were compared, and the physical significance of parameters was analyzed. Meanwhile, the processing maps with different instability criteria were obtained. It was shown that instability did not occur when average power dissipation rate was larger than 50% in the temperature range of 1020- 1130 ℃, corresponding to the strain rate range of 5 × 10~(-4)-3.2 × 10~(-3) s~(-1). The domain is appropriate for the processing deformation of superalloy GH4742.
关键词	SLOW COOLING TREATMENT DEFORMATION-BEHAVIOR HOT DEFORMATION TITANIUM-ALLOY MICROSTRUCTURE GH4742 superalloy Hot compression tests Flow instability criterion Processing map
收录类别	CSCD
语种	英语
资助项目	[National Key Basic Research Program of China]
CSCD记录号	CSCD:5089390
引用统计	被引频次：15[CSCD] [CSCD记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/144120
专题	中国科学院金属研究所
作者单位	1.中国科学院金属研究所 2.Cent Iron & Steel Res Institute, High Temp Mat Div, Beijing 100081, Peoples R China
推荐引用方式 GB/T 7714	Zhou Ge,Ding Hua,Cao Furong,et al. A Comparative Study of Various Flow Instability Criteria in Processing Map of Superalloy GH4742[J]. JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,2014,30(3):217-222.
APA	Zhou Ge,Ding Hua,Cao Furong,&Zhang Beijiang.(2014).A Comparative Study of Various Flow Instability Criteria in Processing Map of Superalloy GH4742.JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,30(3),217-222.
MLA	Zhou Ge,et al."A Comparative Study of Various Flow Instability Criteria in Processing Map of Superalloy GH4742".JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY 30.3(2014):217-222.