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HOT DEFORMATION BEHAVIOR AND MICROSTRUCTURE EVOLUTION OF A HIGH-Nb-CONTAINING TiAl BASED ALLOY
Wang Gang; Xu Lei; Wang Yong; Zheng Zhuo; Cui Yuyou; Yang Rui
Corresponding AuthorCui Yuyou(dagang6@yahoo.com.cn)
2011-05-11
Source PublicationACTA METALLURGICA SINICA
ISSN0412-1961
Volume47Issue:5Pages:587-593
AbstractThe hot deformation behavior of a high-Nb-containing TiAl based alloy has been studied using the processing map approach. Compression tests were conducted in the temperature range of 950-1300 degrees C and the strain rate range of 0.001 s(-1) to 10 s(-1) on a Gleeble-3800 testing system. The flow stress was found to be strongly dependent on the temperature and the strain rate. The regimes of flow instability have been delineated in the temperature range of 950-1200 degrees C and the strain rate ranges from 1 s(-1) to 10 s(-1), as well as in the temperature of 1250-1300 degrees C and the strain rate of 10 s(-1). The optimal hot-working conditions for the investigated TiAl alloy are in two regimes: (i) in the temperature range 950-1100 degrees C and at the strain rate of 0.001 s(-1) to 0.1 s(-1), and (ii) in the temperature range 1250-1300 degrees C and at the strain rate of 0.001 s(-1) to 1 s(-1). The material exhibited dynamic recrystallization to produce a fine-grained microstructure in these conditions. In the temperature range 1150-1200 degrees C with the strain rate 0.001 s(-1), the alloy exhibited superplasticity.
KeywordTiAl alloy processing map hot deformation dynamic recrystallization superplasticity
DOI10.3724/SP.J.1037.2011.00005
Indexed BySCI
Language英语
WOS Research AreaMetallurgy & Metallurgical Engineering
WOS SubjectMetallurgy & Metallurgical Engineering
WOS IDWOS:000291845800012
PublisherSCIENCE CHINA PRESS
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/106406
Collection中国科学院金属研究所
Corresponding AuthorCui Yuyou
AffiliationChinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China
Recommended Citation
GB/T 7714
Wang Gang,Xu Lei,Wang Yong,et al. HOT DEFORMATION BEHAVIOR AND MICROSTRUCTURE EVOLUTION OF A HIGH-Nb-CONTAINING TiAl BASED ALLOY[J]. ACTA METALLURGICA SINICA,2011,47(5):587-593.
APA Wang Gang,Xu Lei,Wang Yong,Zheng Zhuo,Cui Yuyou,&Yang Rui.(2011).HOT DEFORMATION BEHAVIOR AND MICROSTRUCTURE EVOLUTION OF A HIGH-Nb-CONTAINING TiAl BASED ALLOY.ACTA METALLURGICA SINICA,47(5),587-593.
MLA Wang Gang,et al."HOT DEFORMATION BEHAVIOR AND MICROSTRUCTURE EVOLUTION OF A HIGH-Nb-CONTAINING TiAl BASED ALLOY".ACTA METALLURGICA SINICA 47.5(2011):587-593.
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