Characterization of Prealloyed Ti-6Al-4V Powders from EIGA and PREP Process and Mechanical Properties of HIPed Powder Compacts

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	Characterization of Prealloyed Ti-6Al-4V Powders from EIGA and PREP Process and Mechanical Properties of HIPed Powder Compacts
	Guo, Rui-Peng ; Xu, Lei ; Zong, Bernie Ya-Ping ; Yang, Rui
刊名	ACTA METALLURGICA SINICA-ENGLISH LETTERS
	2017-08-01
卷号	30 期号:8 页码:735-744
关键词	Ti-6Al-4V Prealloyed powder Hot isostatic pressing Near-net shape forming
ISSN号	1006-7191
通讯作者	Xu, L (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China.
中文摘要	Prealloyed Ti-6Al-4V powders were prepared by electrode induction melting gas atomization (EIGA) and plasma rotating electrode process (PREP) in this work. A comparative study of EIGA and PREP powders for hot isostatic pressing (HIPing) compaction was conducted. Characterization of important technological parameters such as particle size distribution, powder surface morphology and flowability was carried out. Microstructure and mechanical properties of Ti-6Al-4V powder compacts HIPed from EIGA and PREP powders were also investigated. The results showed that the EIGA powder has a finer average particle size and higher tap density, while the PREP powder has better flowability and less pores. Micropores can be observed in heat-treated EIGA powder compacts by X-ray tomography and the porosity was found to be about 0.02%. There are no micropores (>= 4 mu m) to be detected in heat-treated PREP powder compacts. Transgranular fracture mode as well as micropores contributes to the scatter in fatigue property of heat-treated PREP powder compacts. The respective advantages and disadvantages of both EIGA and PREP powders for producing Ti-based complex parts through HIPing were also discussed.
学科主题	Metallurgy & Metallurgical Engineering
收录类别	SCI
资助信息	National Key Research and Development Program of China [2016YFB0701200]
语种	英语
公开日期	2017-08-17
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/78026]
专题	金属研究所_中国科学院金属研究所
推荐引用方式 GB/T 7714	Guo, Rui-Peng,Xu, Lei,Zong, Bernie Ya-Ping,et al. Characterization of Prealloyed Ti-6Al-4V Powders from EIGA and PREP Process and Mechanical Properties of HIPed Powder Compacts[J]. ACTA METALLURGICA SINICA-ENGLISH LETTERS,2017,30(8):735-744.
APA	Guo, Rui-Peng,Xu, Lei,Zong, Bernie Ya-Ping,&Yang, Rui.(2017).Characterization of Prealloyed Ti-6Al-4V Powders from EIGA and PREP Process and Mechanical Properties of HIPed Powder Compacts.ACTA METALLURGICA SINICA-ENGLISH LETTERS,30(8),735-744.
MLA	Guo, Rui-Peng,et al."Characterization of Prealloyed Ti-6Al-4V Powders from EIGA and PREP Process and Mechanical Properties of HIPed Powder Compacts".ACTA METALLURGICA SINICA-ENGLISH LETTERS 30.8(2017):735-744.