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

IMR OpenIR

	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; Xu, L (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China.
	2017-08-01
发表期刊	ACTA METALLURGICA SINICA-ENGLISH LETTERS
ISSN	1006-7191
卷号	30 期号:8 页码:735-744
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.; 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.
部门归属	[guo, rui-peng] northeastern univ, sch mat sci & engn, shenyang 110819, peoples r china ; [guo, rui-peng ; xu, lei ; yang, rui] chinese acad sci, inst met res, shenyang 110016, peoples r china ; [zong, bernie ya-ping] northeastern univ, key lab anisotropy & texture mat, minist educ, shenyang 110819, peoples r china
关键词	Ti-6al-4v Prealloyed Powder Hot Isostatic Pressing Near-net Shape Forming
学科领域	Metallurgy & Metallurgical Engineering
资助者	National Key Research and Development Program of China [2016YFB0701200]
收录类别	SCI
语种	英语
WOS记录号	WOS:000405518500005
引用统计	被引频次：41[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/321006/78026
专题	中国科学院金属研究所
通讯作者	Xu, L (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China.
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,&Xu, L .(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.