Effects of Cooling Rate on the Microstructure and Tensile Properties of Powder Metallurgy Ti2AlNb Alloy

doi:10.1007/s11837-022-05338-5

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	Effects of Cooling Rate on the Microstructure and Tensile Properties of Powder Metallurgy Ti2AlNb Alloy
	Tian, Xiaosheng 2,3; Wu, Jie 3; Lu, Zhengguan 3; Guo, Ruipeng 1; Xu, Lei 3; Yang, Rui 3
刊名	JOM
	2022-05-31
页码	9
ISSN号	1047-4838
DOI	10.1007/s11837-022-05338-5
通讯作者	Xu, Lei(lxu@imr.ac.cn)
英文摘要	The 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.
资助项目	CAS Project for Young Scientists in Basic Research[YSBR-025]
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering ; Mineralogy ; Mining & Mineral Processing
语种	英语
出版者	SPRINGER
WOS记录号	WOS:000803856200001
资助机构	CAS Project for Young Scientists in Basic Research
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/174308]
专题	金属研究所_中国科学院金属研究所
通讯作者	Xu, Lei
作者单位	1.Taiyuan Univ Technol, Coll Mat Sci & Engn, Taiyuan 030024, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China 3.Chinese Acad Sci, Shi Changxu Innovat Ctr Adv Mat, Inst Met Res, Shenyang 110016, Peoples R China
推荐引用方式 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.