Effect of laser power on the microstructure and mechanical properties of laser-assisted cold sprayed 7075 aluminum alloy deposits

doi:10.1016/j.msea.2023.145224

IMR OpenIR

	Effect of laser power on the microstructure and mechanical properties of laser-assisted cold sprayed 7075 aluminum alloy deposits
	Wang, Kang 1,2; Zhao, Lijia 1,2; Mao, Tianliang 1; Cui, Xinyu 1; Wang, Jiqiang 1; Xiong, Tianying 1
通讯作者	Wang, Jiqiang(jqwang11s@imr.ac.cn)
	2023-07-10
发表期刊	MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
ISSN	0921-5093
卷号	879 页码:15
摘要	7075 aluminum alloy deposits were fabricated using a solid-state additive manufacturing (AM) technology called laser-assisted cold spray (LACS). The effect of laser power on the microstructure evolution and mechanical property in the LACSed 7075 deposits was investigated. The microstructure of all deposits was analyzed by optical microscopy (OM), X-ray diffraction (XRD), and scanning electron microscopy (SEM) attached with energy dispersive spectroscopy (EDS) and electron backscatter diffraction (EBSD) systems. Pull-off adhesion, microhardness, and tensile tests were performed to assess their mechanical behaviors. The deposits showed a virtually linear increase in thickness with increased laser power and a minimum porosity of about 0.2%. With the accelerated diffusion of solute elements in deposits, lamellar & eta; phase - Mg(Zn, Cu, Al)2 and Al7Cu2Fe precipitated along grain boundaries at 2.6 kW eventually. Meanwhile, significant grain growth and recrystallization were initiated at the severely deformed prior-particle interfaces. All the LACSed deposits exhibited a noticeable increase in adhesion strength and a slight decrease in microhardness compared to the CSed one. The ultimate tensile strength (UTS) and elongation to fracture (EL) were improved by up to -46% and -35% in LACSed 7075 deposits. The relationship between mechanical properties and microstructure and the contribution of underlying strengthening mechanisms involved in the LACS process were then thoroughly discussed.
关键词	Laser-assisted cold spray 7075 alloy Microstructure evolution Mechanical properties Strengthening mechanisms
资助者	Natural Science Foundation of Liaoning Province, China
DOI	10.1016/j.msea.2023.145224
收录类别	SCI
语种	英语
资助项目	Natural Science Foundation of Liaoning Province, China ; [2021-MS-002]
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:001058241000001
出版者	ELSEVIER SCIENCE SA
引用统计	被引频次：7[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/321006/179045
专题	中国科学院金属研究所
通讯作者	Wang, Jiqiang
作者单位	1.Chinese Acad Sci, Shi Changxu Innovat Ctr Adv Mat, Inst Met Res, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Wang, Kang,Zhao, Lijia,Mao, Tianliang,et al. Effect of laser power on the microstructure and mechanical properties of laser-assisted cold sprayed 7075 aluminum alloy deposits[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2023,879:15.
APA	Wang, Kang,Zhao, Lijia,Mao, Tianliang,Cui, Xinyu,Wang, Jiqiang,&Xiong, Tianying.(2023).Effect of laser power on the microstructure and mechanical properties of laser-assisted cold sprayed 7075 aluminum alloy deposits.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,879,15.
MLA	Wang, Kang,et al."Effect of laser power on the microstructure and mechanical properties of laser-assisted cold sprayed 7075 aluminum alloy deposits".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 879(2023):15.