Microstructure of Powder Metallurgical Ti-5Al-2.5Sn ELI Alloy

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	Microstructure of Powder Metallurgical Ti-5Al-2.5Sn ELI Alloy
	Wu Jun 1,2; Xu Lei 1; Lei Jiafeng 1; Liu Yuyin 1
刊名	RARE METAL MATERIALS AND ENGINEERING
	2015-09-01
卷号	44 期号:9 页码:2255-2259
关键词	powder metallurgy hot isostatic pressing Ti-5Al-2.5Sn ELI microstructure
ISSN号	1002-185X
通讯作者	Lei Jiafeng(jflei@imr.ac.cn)
英文摘要	Powder metallurgical Ti-5Al-2.5Sn ELI (extra low interstitial) alloy was prepared in a container by hot isostatic pressing (HIP). The effects of HIP temperature, particle size of powders and heat treatment temperature on the microstructure have been investigated. Particle morphology would be observed in the powder compact sample, with its relative density of 99.2% at the holding temperature of 800 degrees C. Within the temperature ranging from 900 to 940 degrees C, the microstructure has developed into fully dense and fine equiaxed grains. When the sample is compacted in alpha phase region, significant diffusion of Fe can be hardly observed at the boundary of the container and the compact; in alpha-beta or beta phase region, fast diffusion of Fe in beta phase may do harm to surface quality of the powder compact. The mean grain size and the residual porosity of PM alloy increase with the increase of powders' particle size. There is no obvious change in the microstructure of PM alloy after heat treatment in alpha phase region. Temperature induced porosity doesn't appear until the heat treatment temperature rises up to 1000 degrees C.
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
语种	英语
出版者	NORTHWEST INST NONFERROUS METAL RESEARCH
WOS记录号	WOS:000362612500033
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/120902]
专题	金属研究所_中国科学院金属研究所
通讯作者	Lei Jiafeng
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China 2.China Acad Engn Phys, Mianyang 621900, Peoples R China
推荐引用方式 GB/T 7714	Wu Jun,Xu Lei,Lei Jiafeng,et al. Microstructure of Powder Metallurgical Ti-5Al-2.5Sn ELI Alloy[J]. RARE METAL MATERIALS AND ENGINEERING,2015,44(9):2255-2259.
APA	Wu Jun,Xu Lei,Lei Jiafeng,&Liu Yuyin.(2015).Microstructure of Powder Metallurgical Ti-5Al-2.5Sn ELI Alloy.RARE METAL MATERIALS AND ENGINEERING,44(9),2255-2259.
MLA	Wu Jun,et al."Microstructure of Powder Metallurgical Ti-5Al-2.5Sn ELI Alloy".RARE METAL MATERIALS AND ENGINEERING 44.9(2015):2255-2259.