Microstructure and Phase Evolution in TiAl-Ti2AlNb Gradient Material Prepared by Micro-beam Plasma Melting Deposition

IMR OpenIR

	Microstructure and Phase Evolution in TiAl-Ti2AlNb Gradient Material Prepared by Micro-beam Plasma Melting Deposition
	Cai Yusheng; Liu Renci; Liu Dong; Cui Yuyou; Yang Rui
通讯作者	Cai Yusheng(yscai14b@imr.ac.cn)
	2017-06-01
发表期刊	RARE METAL MATERIALS AND ENGINEERING
ISSN	1002-185X
卷号	46 页码:15-19
摘要	A Ti(2)ALNb-base alloy was deposited on a TiAl-base alloy by micro-beam plasma melting deposition. Optical microscope (OM), scanning electron microscope (SEM), energy-dispersive spectrometer (EDS), X-ray diffraction (XRD) and microhardness testing methods were used to investigate the typical microstructure evolution, phase transformation and the corresponding hardness evolution. Results show that micro-beam plasma melting deposited Ti(2)ALNb-base alloy are mainly composed of beta, O and alpha(2) phases. With the increase of distance from TiAl-base alloy, a series of phase evolutions along the compositional gradient occurs: gamma+alpha(2)/gamma ->beta(solid solution)+O -> beta(2)+O+alpha(2)(widmannstatten structure)->beta/(solid solution)+O. The microhardness of gradient material shows a wave-like distribution. The phase morphological evolution during forming of micro-beam plasma melting deposition gradient materials was explained based on the effect of the various elements on the phase stability in TiAl/Ti2AlNb-base alloy combining with the effects of special thermal cycle and heat accumulation in micro-beam plasma melting deposition forming.
关键词	Ti2AlNb-base alloy micro-beam plasma microstructure microhardness
收录类别	SCI
语种	英语
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000406570100004
出版者	NORTHWEST INST NONFERROUS METAL RESEARCH
引用统计	被引频次：1[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/321006/124816
专题	中国科学院金属研究所
通讯作者	Cai Yusheng
作者单位	Chinese Acad Sci, Inst Met Res, Shenyang 110016, Liaoning, Peoples R China
推荐引用方式 GB/T 7714	Cai Yusheng,Liu Renci,Liu Dong,et al. Microstructure and Phase Evolution in TiAl-Ti2AlNb Gradient Material Prepared by Micro-beam Plasma Melting Deposition[J]. RARE METAL MATERIALS AND ENGINEERING,2017,46:15-19.
APA	Cai Yusheng,Liu Renci,Liu Dong,Cui Yuyou,&Yang Rui.(2017).Microstructure and Phase Evolution in TiAl-Ti2AlNb Gradient Material Prepared by Micro-beam Plasma Melting Deposition.RARE METAL MATERIALS AND ENGINEERING,46,15-19.
MLA	Cai Yusheng,et al."Microstructure and Phase Evolution in TiAl-Ti2AlNb Gradient Material Prepared by Micro-beam Plasma Melting Deposition".RARE METAL MATERIALS AND ENGINEERING 46(2017):15-19.