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Effects of Cooling Rate on the Microstructure and Tensile Properties of Powder Metallurgy Ti2AlNb Alloy
Tian, Xiaosheng1,2; Wu, Jie1; Lu, Zhengguan1; Guo, Ruipeng3; Xu, Lei1; Yang, Rui1
Corresponding AuthorXu, Lei(lxu@imr.ac.cn)
2022-05-31
Source PublicationJOM
ISSN1047-4838
Pages9
AbstractThe effect of cooling rate on the microstructure and tensile properties of powder metallurgy (PM) Ti2AlNb alloy was studied. The Ti2AlNb pre-alloyed powder was produced by electrode induction melting gas atomization (EIGA) and then fabricated by hot isostatic pressing (HIP) at 1030 degrees C with applied pressure of 130 MPa, holding for 3 h. All samples were solution treated at 980 degrees C for 2 h, cooled at different cooling rates. The results showed that, with increasing cooling rate, the tensile strength increased to a maximum value and then decreased. The multiphase structure consists of dispersive alpha(2) phase, O phase and B2 phase matrix by furnace cooling (including four different cooling rates). At these cooling rates, all alloys have excellent elongation at room temperature (RT) and 650 degrees C. Under air cooling and water cooling, only alpha(2) and B2 phase exist in these alloys, and they have better elongation at room temperature. At 650 degrees C, a sharp drop in plasticity has been obtained because of the fine acicular O phase precipitates, which will reduce the resistance of crack propagation along the prior B2 grain boundary.
Funding OrganizationCAS Project for Young Scientists in Basic Research
DOI10.1007/s11837-022-05338-5
Indexed BySCI
Language英语
Funding ProjectCAS Project for Young Scientists in Basic Research[YSBR-025]
WOS Research AreaMaterials Science ; Metallurgy & Metallurgical Engineering ; Mineralogy ; Mining & Mineral Processing
WOS SubjectMaterials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering ; Mineralogy ; Mining & Mineral Processing
WOS IDWOS:000803856200001
PublisherSPRINGER
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/174309
Collection中国科学院金属研究所
Corresponding AuthorXu, Lei
Affiliation1.Chinese Acad Sci, Shi Changxu Innovat Ctr Adv Mat, Inst Met Res, Shenyang 110016, Peoples R China
2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China
3.Taiyuan Univ Technol, Coll Mat Sci & Engn, Taiyuan 030024, Peoples R China
Recommended Citation
GB/T 7714
Tian, Xiaosheng,Wu, Jie,Lu, Zhengguan,et al. Effects of Cooling Rate on the Microstructure and Tensile Properties of Powder Metallurgy Ti2AlNb Alloy[J]. JOM,2022:9.
APA Tian, Xiaosheng,Wu, Jie,Lu, Zhengguan,Guo, Ruipeng,Xu, Lei,&Yang, Rui.(2022).Effects of Cooling Rate on the Microstructure and Tensile Properties of Powder Metallurgy Ti2AlNb Alloy.JOM,9.
MLA Tian, Xiaosheng,et al."Effects of Cooling Rate on the Microstructure and Tensile Properties of Powder Metallurgy Ti2AlNb Alloy".JOM (2022):9.
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