Effects of electropulsing on the microstructure and microhardness of a selective laser melted Ti6Al4V alloy

doi:10.1016/j.jallcom.2021.160044

CORC > 金属研究所 > 中国科学院金属研究所

	Effects of electropulsing on the microstructure and microhardness of a selective laser melted Ti6Al4V alloy
	Gao, J. B.1,2; Ben, D. D.1; Yang, H. J.1; Meng, L. X.1; Ji, H. B.1; Lian, D. L.1; Chen, J.3; Yi, J. L.3; Wang, L.3; Li, P.2
刊名	JOURNAL OF ALLOYS AND COMPOUNDS
	2021-09-15
卷号	875 页码:8
关键词	Selective laser melting Ti6Al4V alloy Electropulsing Microstructure Phase transformation
ISSN号	0925-8388
DOI	10.1016/j.jallcom.2021.160044
通讯作者	Yang, H. J.(hjyang@imr.ac.cn) ; Li, P.(pengli@ysu.edu.cn)
英文摘要	Optimizing the microstructure and mechanical properties of the selective laser melted (SLM) Ti6Al4V alloy is an important issue both in the scientific and engineering interests. In this study, the rapid hardening and softening of the SLM-Ti6Al4V alloy is realized due to the obvious evolution of microstructures during the electropulsing treatment (EPT) with different discharge voltages. The microhardness of the EPT-7.5 kV sample decreased about 7% while the EPT-8 kV sample increased about 10% compared with the as-received sample. Scanning electron microscopy (SEM), electron backscattered diffraction (EBSD) and transmission electron microscopy (TEM) analysis were used to characterize the evolutions of alpha and beta grains and dis-location structures which are corresponding with the microhardness changes induced by EPT. Analysis shows that EPT could reduce the thermodynamic barrier for alpha -> beta solid-state phase transformation, further arise microstructure refinement in the SLM-Ti6Al4V alloy. This research shed some new light on rapidly and efficiently improving the microstructure and mechanical properties of the additive manufactured metal components. (c) 2021 Elsevier B.V. All rights reserved.
资助项目	National Natural Science Foundation of China[51975552] ; COMAC Shanghai Aircraft Manufacturing Co., Ltd.[COMACSFGS20182663] ; Youth Innovation Promotion Association CAS[2017235] ; Yanshan University Scientific Research Foundation for Advanced Talents ; Natural Science Foundation of Liao Ning[2020-MS-007] ; Liao Ning Revitalization Talents Program[XLYC1808027]
WOS研究方向	Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering
语种	英语
出版者	ELSEVIER SCIENCE SA
WOS记录号	WOS:000657533000002
资助机构	National Natural Science Foundation of China ; COMAC Shanghai Aircraft Manufacturing Co., Ltd. ; Youth Innovation Promotion Association CAS ; Yanshan University Scientific Research Foundation for Advanced Talents ; Natural Science Foundation of Liao Ning ; Liao Ning Revitalization Talents Program
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/160354]
专题	金属研究所_中国科学院金属研究所
通讯作者	Yang, H. J.; Li, P.
作者单位	1.Chinese Acad Sci, Shi Changxu Innovat Ctr Adv Mat, Inst Met Res, Shenyang 110016, Peoples R China 2.Yanshan Univ, Clean Nano Energy Ctr, State Key Lab Metastable Mat Sci & Technol, Qinhuangdao 066004, Hebei, Peoples R China 3.COMAC Shanghai Aircraft Mfg Co Ltd, Shanghai 201324, Peoples R China
推荐引用方式 GB/T 7714	Gao, J. B.,Ben, D. D.,Yang, H. J.,et al. Effects of electropulsing on the microstructure and microhardness of a selective laser melted Ti6Al4V alloy[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2021,875:8.
APA	Gao, J. B..,Ben, D. D..,Yang, H. J..,Meng, L. X..,Ji, H. B..,...&Zhang, Z. F..(2021).Effects of electropulsing on the microstructure and microhardness of a selective laser melted Ti6Al4V alloy.JOURNAL OF ALLOYS AND COMPOUNDS,875,8.
MLA	Gao, J. B.,et al."Effects of electropulsing on the microstructure and microhardness of a selective laser melted Ti6Al4V alloy".JOURNAL OF ALLOYS AND COMPOUNDS 875(2021):8.