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Preparation and ring rolling processing of large size Ti-6Al-4V powder compact
Guo, R. P.; Xu, L.; Zong, B. Y.; Yang, R.; Xu, L (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China.
2016-06-05
Source PublicationMATERIALS & DESIGN
ISSN0264-1275
Volume99Pages:341-348
AbstractThis study reports the feasibility to fabricate large size Ti-6Al-4V alloy parts using the retained powder after screened out the finer powder for additive manufacturing. Effects of powder size on the microstructure and mechanical properties of powder compacts were studied. Effects of HIPing cycle on relative density distribution of large size powder compact were also investigated. Hot compression tests of as-HIPed powder compact were conducted. Prediction of temperature field distribution of large size powder compact during ring rolling was obtained though finite element method (FEM). The results showed that the powder size has no obvious influence on the microstructure and mechanical properties of as-HIPed Ti-6Al-4V alloy. The homogeneous as-HIPed powder compact with large dimensions can be produced through an optimized HIPing schedule. The optimized hot working processing window from the isothermal compression tests is temperature at 940-970 degrees C and strain rate at 1-10s(-1). The hot workability of Ti-6Al-4V powder compact is comparable or better than that of as-cast alloys. On the basis of isothermal compression tests and FEM results, a large workpiece of Ti-6Al-4V powder component has been successfully formed by ring rolling, and the mechanical performance of ring-rolled powder compact have some improvements than that of as-HIPed alloys. (C) 2016 Elsevier Ltd. All rights reserved.
description.department[guo, r. p. ; xu, l. ; yang, r.] chinese acad sci, inst met res, shenyang 110016, peoples r china ; [guo, r. p.] northeastern univ, sch met & mat, shenyang 110819, peoples r china ; [zong, b. y.] northeastern univ, minist educ, key lab anisotropy & texture mat, shenyang 110819, peoples r china
KeywordHot Working Ring Rolling Powder Metallurgy Hot Isostatic Pressing Titanium Alloy
Subject AreaMaterials Science
Funding OrganizationNational Natural Science Foundation of China [U1302272]; National High Technology Research and Development Program of China [2013AA031606]
Indexed Bysci
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/75839
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, R. P.,Xu, L.,Zong, B. Y.,et al. Preparation and ring rolling processing of large size Ti-6Al-4V powder compact[J]. MATERIALS & DESIGN,2016,99:341-348.
APA Guo, R. P.,Xu, L.,Zong, B. Y.,Yang, R.,&Xu, L .(2016).Preparation and ring rolling processing of large size Ti-6Al-4V powder compact.MATERIALS & DESIGN,99,341-348.
MLA Guo, R. P.,et al."Preparation and ring rolling processing of large size Ti-6Al-4V powder compact".MATERIALS & DESIGN 99(2016):341-348.
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