Comparison of the microstructures and mechanical properties of Ti-6Al-4V fabricated by selective laser melting and electron beam melting

IMR OpenIR

	Comparison of the microstructures and mechanical properties of Ti-6Al-4V fabricated by selective laser melting and electron beam melting
	Zhao, Xiaoli; Li, Shujun; Zhang, Man; Liu, Yandong; Sercombe, Timothy B.; Wang, Shaogang; Hao, Yulin; Yang, Rui; Murr, Lawrence E.; shjli@imr.ac.cn
	2016
发表期刊	MATERIALS & DESIGN
ISSN	0261-3069
卷号	95 页码:21-31
摘要	The microstructure and mechanical properties of SLM and EBM Ti-6Al-4V samples have been compared. The effect of part size and orientation on the defects, microstructure and their contribution to the tensile and fatigue properties were elucidated. As-fabricated SLM and EBM samples mainly consisted of alpha' and alpha + beta phases, respectively. Pores were the main defects in SLM and EBM samples, and closely related to scanning strategies and energy input. The porosity of SLM samples was higher compared to EBM samples. The part size had an obvious influence on the microstructure and mechanical properties of EBM samples but less so for SLM samples. Both SLM and EBM samples possessed higher strength and better ductility in the vertical orientation than those in the horizontal orientation. The tensile strength of SLM samples was significantly greater than that of EBM samples whereas the ductility was much lower. Due to the pores contained in samples, fatigue strength of both EBM and SLM samples was lower than those of cast and annealed alloys. However, hot isostatic pressing (HIP) significantly increased the fatigue limits of both SLM and EBM samples to above 550 MPa by closing of the pores. (C) 2015 Published by Elsevier Ltd.
部门归属	[zhao, xiaoli ; zhang, man ; liu, yandong] northeastern univ, sch met & mat, minist educ, key lab anisotropy & texture mat, shenyang 110819, peoples r china ; [li, shujun ; wang, shaogang ; hao, yulin ; yang, rui] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china ; [sercombe, timothy b.] univ western australia, sch mech & chem engn, crawley, wa 6009, australia ; [murr, lawrence e.] univ texas el paso, dept met & mat engn, el paso, tx 79968 usa
关键词	Slm Ebm Ti-6al-4v Microstructure Mechanical Properties Comparison
资助者	863 Project [2015AA033702]; National Basic Research Program of China [2012CB619103, 2012CB933901, 2012CB933902]; National Natural Science Foundation of China [51271182, 51271180, 51401048]; Fundamental Research Funds for the Central Universities [N140204004]
收录类别	sci
语种	英语
WOS记录号	WOS:000371295200003
引用统计	被引频次：527[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/321006/74677
专题	中国科学院金属研究所
通讯作者	shjli@imr.ac.cn
推荐引用方式 GB/T 7714	Zhao, Xiaoli,Li, Shujun,Zhang, Man,et al. Comparison of the microstructures and mechanical properties of Ti-6Al-4V fabricated by selective laser melting and electron beam melting[J]. MATERIALS & DESIGN,2016,95:21-31.
APA	Zhao, Xiaoli.,Li, Shujun.,Zhang, Man.,Liu, Yandong.,Sercombe, Timothy B..,...&shjli@imr.ac.cn.(2016).Comparison of the microstructures and mechanical properties of Ti-6Al-4V fabricated by selective laser melting and electron beam melting.MATERIALS & DESIGN,95,21-31.
MLA	Zhao, Xiaoli,et al."Comparison of the microstructures and mechanical properties of Ti-6Al-4V fabricated by selective laser melting and electron beam melting".MATERIALS & DESIGN 95(2016):21-31.