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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; Xu, L (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China.
2017-08-01
Source PublicationACTA METALLURGICA SINICA-ENGLISH LETTERS
ISSN1006-7191
Volume30Issue:8Pages:735-744
AbstractPrealloyed 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.
description.department[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
KeywordTi-6al-4v Prealloyed Powder Hot Isostatic Pressing Near-net Shape Forming
Subject AreaMetallurgy & Metallurgical Engineering
Funding OrganizationNational Key Research and Development Program of China [2016YFB0701200]
Indexed BySCI
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/78026
Collection中国科学院金属研究所
Corresponding AuthorXu, L (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China.
Recommended Citation
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.
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