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Processing Map and Hot Working Mechanism of As-Cast Ti-42Al-5Mn Alloy
Xu, Hao; Li, Xiaobing; Xing, Weiwei; Shu, Lei; Ma, Yingche; Liu, Kui
Corresponding AuthorLi, Xiaobing(xbli@imr.ac.cn) ; Ma, Yingche(ycma@imr.ac.cn)
2018-06-01
Source PublicationADVANCED ENGINEERING MATERIALS
ISSN1438-1656
Volume20Issue:6Pages:10
AbstractThe research is focused on the hot deformation behavior of Ti-42Al-5Mn (at%) ingot produced by vacuum induction melting (VIM) and vacuum arc remelting (VAR). Firstly, the isothermal compression test is performed at the temperatures between 1100 and 1300 degrees C with the strain rates in the range of 0.001-10s(-1). The processing map is plotted on the base of the strain-stress curves, and the constitutive equation is also established by regression analysis based on the experimental results. Secondly, different deformation features in , phase, and lath of lamellae are investigated by electron probe micro analyzer (EPMA) and transmission electron microscope (TEM). The results reveal that, the alloy can be hot worked from 1300 degrees C-10 s(-1) to 1100 degrees C-0.1 s(-1), and the stress exponent and apparent activation energy are calculated to be 2.71 and 597kJmole(-1), respectively. It shows that, during the isothermal compression process, the phase usually has a higher dislocation density than phase, and the lath of lamellae has generated both dislocation glide and deformation twinning.
Keywordconstitutive equation dislocation and twinning intermetallics microstructure processing map
DOI10.1002/adem.201701059
Indexed BySCI
Language英语
WOS Research AreaMaterials Science
WOS SubjectMaterials Science, Multidisciplinary
WOS IDWOS:000435928600022
PublisherWILEY-V C H VERLAG GMBH
Citation statistics
Cited Times:9[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/128692
Collection中国科学院金属研究所
Corresponding AuthorLi, Xiaobing; Ma, Yingche
AffiliationChinese Acad Sci, Inst Met Res, Shenyang 110016, Liaoning, Peoples R China
Recommended Citation
GB/T 7714
Xu, Hao,Li, Xiaobing,Xing, Weiwei,et al. Processing Map and Hot Working Mechanism of As-Cast Ti-42Al-5Mn Alloy[J]. ADVANCED ENGINEERING MATERIALS,2018,20(6):10.
APA Xu, Hao,Li, Xiaobing,Xing, Weiwei,Shu, Lei,Ma, Yingche,&Liu, Kui.(2018).Processing Map and Hot Working Mechanism of As-Cast Ti-42Al-5Mn Alloy.ADVANCED ENGINEERING MATERIALS,20(6),10.
MLA Xu, Hao,et al."Processing Map and Hot Working Mechanism of As-Cast Ti-42Al-5Mn Alloy".ADVANCED ENGINEERING MATERIALS 20.6(2018):10.
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