Effect of laser scanning speed on microstructure and mechanical properties of SLM porous Ti-5Al-5V-5Mo-3Cr-1Fe alloy

doi:10.3389/fmats.2022.973829

CORC > 金属研究所 > 中国科学院金属研究所

	Effect of laser scanning speed on microstructure and mechanical properties of SLM porous Ti-5Al-5V-5Mo-3Cr-1Fe alloy
	Yuan, Wei 3; Zhao, Xiaoli 2; Li, Shujun 1; Zhu, Yue 3
刊名	FRONTIERS IN MATERIALS
	2022-08-04
卷号	9 页码:10
关键词	metamaterial beta-titanium microstructure mechanical behavior selective laser melting
ISSN号	2296-8016
DOI	10.3389/fmats.2022.973829
通讯作者	Li, Shujun(shjli@imr.ac.cn) ; Zhu, Yue(zhuyuedr@163.com)
英文摘要	In this study, porous Ti-55531(Fe) was fabricated by selective laser melting (SLM) with different laser scanning speeds. The microstructures, surface morphology, inner defects, porosity, microhardness, and compressive behaviors were studied. The variation of lattice constant and hardness were analyzed. The results show that all the specimens have a density of & SIM;1 g/cm(3), and a Vicker's hardness with a range of 280-320 Hv0.1. The porosity of the SLM-produced materials is greater than the designed value (77%) and increases from 77.33% to 82.33% with the increase of laser scanning speed from 500 mm/s to 1,500 mm/s. Continuous irregular columnar dendrites, a large number of gas-induced defects with small size between 20 and 60 mu m and a deep molten pool form in the specimens fabricated with a laser scanning speed less than 1,000 mm/s. Some defects, elongated voids and interrupted columnar dendrites are identified in the specimens fabricated with the laser scanning speed more than 1,000 mm/s caused by the insufficient input energy. All specimens with different laser scanning speeds show the single ss phase patterns. The compressive strength of the specimens with the laser scanning speed of 500 mm/s is maintained at 32 MPa and the compressive strength decreases with the increase of laser scanning speed. The specimens with a scanning speed of 500 mm/s present the best mechanical properties and surface quality.
资助项目	Chinese MoST[2017YFC1104903] ; Key Research Program of Frontier Sciences, CAS[QYZDJ-SSW-JSC031-02] ; National Natural Science Foundation of China[81902191] ; National Natural Science Foundation of China[51871220] ; National Natural Science Foundation of China[51922026] ; Scientific Research Foundation of Educational Department of Liaoning Province[QN2019001] ; China Postdoctoral Science Foundation[2021M693523] ; State Key Laboratory of Light Alloy Casting Technology for High-end Equipment[LACT-007] ; Shenyang Talents program[RC200230] ; CAS Interdisciplinary Innovation Team Project[JCTD-2020-10]
WOS研究方向	Materials Science
语种	英语
出版者	FRONTIERS MEDIA SA
WOS记录号	WOS:000843240200001
资助机构	Chinese MoST ; Key Research Program of Frontier Sciences, CAS ; National Natural Science Foundation of China ; Scientific Research Foundation of Educational Department of Liaoning Province ; China Postdoctoral Science Foundation ; State Key Laboratory of Light Alloy Casting Technology for High-end Equipment ; Shenyang Talents program ; CAS Interdisciplinary Innovation Team Project
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/174545]
专题	金属研究所_中国科学院金属研究所
通讯作者	Li, Shujun; Zhu, Yue
作者单位	1.Chinese Acad Sci, Inst Met Res, Shi Changxu Innovat Ctr Adv Mat, Shenyang, Peoples R China 2.Northeastern Univ, Inst Mat Sci, Sch Mat Sci & Engn, Shenyang, Peoples R China 3.China Med Univ, Hosp 1, Dept Orthoped, Shenyang, Peoples R China
推荐引用方式 GB/T 7714	Yuan, Wei,Zhao, Xiaoli,Li, Shujun,et al. Effect of laser scanning speed on microstructure and mechanical properties of SLM porous Ti-5Al-5V-5Mo-3Cr-1Fe alloy[J]. FRONTIERS IN MATERIALS,2022,9:10.
APA	Yuan, Wei,Zhao, Xiaoli,Li, Shujun,&Zhu, Yue.(2022).Effect of laser scanning speed on microstructure and mechanical properties of SLM porous Ti-5Al-5V-5Mo-3Cr-1Fe alloy.FRONTIERS IN MATERIALS,9,10.
MLA	Yuan, Wei,et al."Effect of laser scanning speed on microstructure and mechanical properties of SLM porous Ti-5Al-5V-5Mo-3Cr-1Fe alloy".FRONTIERS IN MATERIALS 9(2022):10.