The formation of precipitates and its effect on grain structure in V-4Cr-4Ti alloys with yttrium addition

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	The formation of precipitates and its effect on grain structure in V-4Cr-4Ti alloys with yttrium addition
	Peng, Lixia; Jiang, Chunli; Li, Xiongwei; Zhou, Ping; Li, Yufei; Lai, Xinchun; Peng, LX; Lai, XC (reprint author), China Acad Engn Phys, Inst Mat Res, Jiangyou City 621908, Sichuan Provinc, Peoples R China.
	2017-02-15
发表期刊	JOURNAL OF ALLOYS AND COMPOUNDS
ISSN	0925-8388
卷号	694 页码:1165-1174
摘要	The formation of precipitates and its effect on the grain structure in V-4Cr-4Ti alloys with and without yttrium addition have been investigated. As-cast and recrystallized grain structure and the secondphase particles were studied via OM (Optical Microscopy), SEM (Scanning Electron Microscopy), TEM (Transmission Electron Microscopy), and EBSD (Electron Back-scattering Diffraction). It was found that yttrium oxides inclusions with size of micrometer level existed in all yttriumcontaining V-4Cr-4Ti alloys including as-cast, rolled, annealed and forged states. It was revealed that fine yttrium-enriched particles, less than 200 nm in size, were frequently observed in V-4Cr-4Ti-0.3Y alloys annealed or forged above 1000 degrees C. Yttriurh addition was observed to have refining effect on the as-cast grains and homogenization effect on the annealed grain structure of rolled sheets. Yttrium addition mitigated the inhomogeneity of recrystallized grain structure in rolled V-4Cr-4Ti sheets due to the enormous reduction of nonuniform Ti(C, N, O) particles, and inhibited the abnormal growth of grains at relatively high annealing temperatures because of the formation of the finer yttrium-enriched precipitates. (C) 2016 Elsevier B.V. All rights reserved.; The formation of precipitates and its effect on the grain structure in V-4Cr-4Ti alloys with and without yttrium addition have been investigated. As-cast and recrystallized grain structure and the secondphase particles were studied via OM (Optical Microscopy), SEM (Scanning Electron Microscopy), TEM (Transmission Electron Microscopy), and EBSD (Electron Back-scattering Diffraction). It was found that yttrium oxides inclusions with size of micrometer level existed in all yttriumcontaining V-4Cr-4Ti alloys including as-cast, rolled, annealed and forged states. It was revealed that fine yttrium-enriched particles, less than 200 nm in size, were frequently observed in V-4Cr-4Ti-0.3Y alloys annealed or forged above 1000 degrees C. Yttriurh addition was observed to have refining effect on the as-cast grains and homogenization effect on the annealed grain structure of rolled sheets. Yttrium addition mitigated the inhomogeneity of recrystallized grain structure in rolled V-4Cr-4Ti sheets due to the enormous reduction of nonuniform Ti(C, N, O) particles, and inhibited the abnormal growth of grains at relatively high annealing temperatures because of the formation of the finer yttrium-enriched precipitates. (C) 2016 Elsevier B.V. All rights reserved.
部门归属	[peng, lixia ; jiang, chunli ; zhou, ping ; li, yufei ; lai, xinchun] china acad engn phys, inst mat res, jiangyou city 621908, sichuan provinc, peoples r china ; [li, xiongwei] chinese acad sci, inst met res, 72 wenhua rd, shenyang 110016, peoples r china
关键词	Yttrium Addition V-4cr-4ti Alloy Precipitates Grain Structure
学科领域	Chemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
资助者	National Natural Science Foundation for Young Scholars of China [11105127]; Basic research projects of national defense [B1520133006]
收录类别	SCI
语种	英语
WOS记录号	WOS:000390622900150
引用统计	被引频次：15[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/78293
专题	中国科学院金属研究所
通讯作者	Peng, LX; Lai, XC (reprint author), China Acad Engn Phys, Inst Mat Res, Jiangyou City 621908, Sichuan Provinc, Peoples R China.
推荐引用方式 GB/T 7714	Peng, Lixia,Jiang, Chunli,Li, Xiongwei,et al. The formation of precipitates and its effect on grain structure in V-4Cr-4Ti alloys with yttrium addition[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2017,694:1165-1174.
APA	Peng, Lixia.,Jiang, Chunli.,Li, Xiongwei.,Zhou, Ping.,Li, Yufei.,...&Lai, XC .(2017).The formation of precipitates and its effect on grain structure in V-4Cr-4Ti alloys with yttrium addition.JOURNAL OF ALLOYS AND COMPOUNDS,694,1165-1174.
MLA	Peng, Lixia,et al."The formation of precipitates and its effect on grain structure in V-4Cr-4Ti alloys with yttrium addition".JOURNAL OF ALLOYS AND COMPOUNDS 694(2017):1165-1174.