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A Comparative Study of Various Flow Instability Criteria in Processing Map of Superalloy GH4742
Alternative TitleA Comparative Study of Various Flow Instability Criteria in Processing Map of Superalloy GH4742
Zhou Ge1; Ding Hua1; Cao Furong1; Zhang Beijiang2
2014
Source PublicationJOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
ISSN1005-0302
Volume30Issue:3Pages:217-222
AbstractHot 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.
Other AbstractHot 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.
KeywordSLOW COOLING TREATMENT DEFORMATION-BEHAVIOR HOT DEFORMATION TITANIUM-ALLOY MICROSTRUCTURE GH4742 superalloy Hot compression tests Flow instability criterion Processing map
Indexed ByCSCD
Language英语
Funding Project[National Key Basic Research Program of China]
CSCD IDCSCD:5089390
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Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/144120
Collection中国科学院金属研究所
Affiliation1.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
Recommended Citation
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.
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