Effects of oxygen on microstructure and mechanical properties of selective laser melted Ti-6Al-4V annealed at different temperatures

doi:10.1016/j.msea.2024.146170

IMR OpenIR

	Effects of oxygen on microstructure and mechanical properties of selective laser melted Ti-6Al-4V annealed at different temperatures
	Nurly, Hasfi F.1,2; Ren, Dechun 2; Cai, Yusheng 2; Ji, Haibin 2; Wang, Hao 3; Huang, Aijun 4; Yang, Rui 1,2,5
通讯作者	Ji, Haibin(hbji@imr.ac.cn) ; Yang, Rui(yangrui@shanghaitech.edu.cn)
	2024-03-01
发表期刊	MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
ISSN	0921-5093
卷号	894 页码:16
摘要	For SLMed Ti-6Al-4V-xO (x = 0.11, 0.16, 0.21, and 0.25 wt%) alloys, both microstructure and mechanical properties are sensitive to oxygen content. The alpha ' martensites in as-built state transform to a 'bimodal' microstructure containing alpha lamellae interspersed with beta transformed regions after 2 h annealing at 800 degree celsius, 850 degree celsius, 900 degree celsius, and 950 degree celsius followed by air cooling. The alpha lamellar width decreases and the beta phase volume fraction increases with increasing oxygen content, due to reduced diffusivity of Al and V. The solid solution hardening effect of oxygen was quantified as: sigma(0) = 472MPa + 2159c(0.5), where sigma(0) is the lattice frictional stress and c is oxygen atomic fraction of the alloy. Increased oxygen content causes reduced fracture toughness and higher fatigue crack growth rate in the unstable growth regime, and the appearance of bilinear growth rate of the Paris regime at high annealing temperatures. The absence of the bilinear behaviour in the low oxygen content alloy and for annealing at low temperatures was interpreted in terms of changes in microstructural characteristics caused by oxygen impeding the diffusion of Al and V.
关键词	Selective laser melting Ti-6Al-4V Annealing Oxygen content Mechanical properties
资助者	National Key Research and Development Program of China ; National Natural Science Foundation of China ; CAS Interdisciplinary Innovation Team Project ; CAS- TWAS President 's Fellowship for International PhD Students
DOI	10.1016/j.msea.2024.146170
收录类别	SCI
语种	英语
资助项目	National Key Research and Development Program of China[2023YFB4603300] ; National Key Research and Development Program of China[2023YFB4603303] ; National Natural Science Foundation of China[52205431] ; CAS Interdisciplinary Innovation Team Project[JCTD-2020-10] ; CAS- TWAS President 's Fellowship for International PhD Students
WOS研究方向	Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:001178737400001
出版者	ELSEVIER SCIENCE SA
引用统计	被引频次：5[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/321006/184893
专题	中国科学院金属研究所
通讯作者	Ji, Haibin; Yang, Rui
作者单位	1.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China 2.Chinese Acad Sci, Shi Changxu Innovat Ctr Adv Mat, Inst Met Res, Shenyang 110016, Peoples R China 3.Univ Shanghai Sci & Technol, Sch Mat Sci & Engn, Shanghai 200093, Peoples R China 4.Monash Univ, Monash Ctr Addit Mfg MCAM, Clayton, Vic 3800, Australia 5.ShanghaiTech Univ, Ctr Adapt Syst Engn, Shanghai 201210, Peoples R China
推荐引用方式 GB/T 7714	Nurly, Hasfi F.,Ren, Dechun,Cai, Yusheng,et al. Effects of oxygen on microstructure and mechanical properties of selective laser melted Ti-6Al-4V annealed at different temperatures[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2024,894:16.
APA	Nurly, Hasfi F..,Ren, Dechun.,Cai, Yusheng.,Ji, Haibin.,Wang, Hao.,...&Yang, Rui.(2024).Effects of oxygen on microstructure and mechanical properties of selective laser melted Ti-6Al-4V annealed at different temperatures.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,894,16.
MLA	Nurly, Hasfi F.,et al."Effects of oxygen on microstructure and mechanical properties of selective laser melted Ti-6Al-4V annealed at different temperatures".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 894(2024):16.