IMR OpenIR
Hot deformation behavior and microstructural evolution of powder metallurgy Ti-22Al-24Nb-0.5Mo alloy
Shao, Z. J.1; Li, Y.1,2; Zhou, B.1; He, X. C.1; Zhang, S. Z.1,2; Xu, L.3
Corresponding AuthorZhang, S. Z.(szzhangyt@163.com)
2020-07-01
Source PublicationMATERIALS CHARACTERIZATION
ISSN1044-5803
Volume165Pages:10
AbstractThe hot deformation behavior and microstructural evolution of Ti-22Al-24Nb-0.5Mo alloy were investigated by compression test in the temperature range of 930 degrees C to 1050 degrees C and strain rate range of 0.001-1 s(-1). In response to temperature and strain rate, the flow stresses of true stress-strain curves increased with the decrease of temperature and increase of strain rate and multiple yielding phenomena are observed at strain rates> 0.1 s(-1). The apparent activation energies in the low temperature (alpha(2) + B2 + O) and high temperature (alpha(2) + B2) phase regions are estimated to be 700 kJ/mol and 417 kJ/mol, respectively. There are three suitable domains for hot working in processing map, in which the alloy has fine grains and continuous dynamic recrystallization accompanying by the globularization of O phase. In two instability domains, discontinuous dynamic recrystallization and strong interactions of secondary phases and dislocations occurred. This short-term imbalance between dynamic softening and work hardening is responsible for the multiple yielding behavior.
KeywordTi-22Al-24Nb-0.5Mo alloy Hot deformation Multiple yielding Microstructure evolution Apparent activation energies Processing map
Funding OrganizationNatural Science Foundation of Shandong Province, China ; Shandong Major Scientific and Technological Innovation Program, China
DOI10.1016/j.matchar.2020.110376
Indexed BySCI
Language英语
Funding ProjectNatural Science Foundation of Shandong Province, China[ZR2019MEM012] ; Shandong Major Scientific and Technological Innovation Program, China[2019JZZY010325]
WOS Research AreaMaterials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectMaterials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering ; Materials Science, Characterization & Testing
WOS IDWOS:000541742100015
PublisherELSEVIER SCIENCE INC
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/139403
Collection中国科学院金属研究所
Corresponding AuthorZhang, S. Z.
Affiliation1.Yantai Univ, Sch Nucl Equipment & Nucl Engn, Yantai 264005, Peoples R China
2.Yantai Univ, Inst Adv Studies Precis Mat, Yantai 264005, Peoples R China
3.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China
Recommended Citation
GB/T 7714
Shao, Z. J.,Li, Y.,Zhou, B.,et al. Hot deformation behavior and microstructural evolution of powder metallurgy Ti-22Al-24Nb-0.5Mo alloy[J]. MATERIALS CHARACTERIZATION,2020,165:10.
APA Shao, Z. J.,Li, Y.,Zhou, B.,He, X. C.,Zhang, S. Z.,&Xu, L..(2020).Hot deformation behavior and microstructural evolution of powder metallurgy Ti-22Al-24Nb-0.5Mo alloy.MATERIALS CHARACTERIZATION,165,10.
MLA Shao, Z. J.,et al."Hot deformation behavior and microstructural evolution of powder metallurgy Ti-22Al-24Nb-0.5Mo alloy".MATERIALS CHARACTERIZATION 165(2020):10.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Shao, Z. J.]'s Articles
[Li, Y.]'s Articles
[Zhou, B.]'s Articles
Baidu academic
Similar articles in Baidu academic
[Shao, Z. J.]'s Articles
[Li, Y.]'s Articles
[Zhou, B.]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Shao, Z. J.]'s Articles
[Li, Y.]'s Articles
[Zhou, B.]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.