Effects of Cu Content on the Microstructure and Tensile Property of K4061 Alloy

doi:10.11900/0412.1961.2022.00427

IMR OpenIR

	Effects of Cu Content on the Microstructure and Tensile Property of K4061 Alloy
	Cao, Shuting 1,2; Zhao, Jian 3; Gong, Tongzhao 1; Zhang, Shaohua 1; Zhang, Jian 1
通讯作者	Zhang, Shaohua(zhangshaohua@imr.ac.cn)
	2024-09-11
发表期刊	ACTA METALLURGICA SINICA
ISSN	0412-1961
卷号	60 期号:9 页码:1179-1188
摘要	Al-Cu alloy has broad application prospects in the field of aerospace due to its excellent performance. In this paper, deposits with different Cu contents were prepared by the wire arc additive manufacturing (WAAM) process, and the effects of Cu content on the microstructure and mechanical properties were investigated. The microstructure of Al-Cu alloy was investigated by metallography, scanning electron microscope (SEM), energy-dispersive spectrometer (EDS), and transmission electron microscope (TEM). The results show that both the number and size of the precipitated theta phases (Al2Cu) in the as-deposited material increase with the increase of Cu content. After the T4 treatment, the solid solution amount of Cu in the matrix showed a trend of first increasing and then remaining stable. When the content of Cu was greater than 5.65%, as the Cu content increased, the number and size of the remaining theta phases both increased. In the peak ageing state, the amount of precipitated theta' phase showed a trend of increasing and then remaining stable. After the T6 treatment, the mechanical properties showed a trend of first increasing and then decreasing with the increase of the content of Cu. When the Cu content was 5.65%, the deposit achieved the best mechanical properties, and the anisotropy of the mechanical properties disappeared. The tensile strength, yield strength, and elongation reached 538 MPa, 478 MPa, and 10.5%, respectively. When the content of Cu was greater than 5.65%, the anisotropy of mechanical properties was obvious, and the fracture mode of the vertical specimen changed from ductile fracture to brittle fracture.
DOI	10.11900/0412.1961.2022.00427
收录类别	SCI
语种	英语
WOS研究方向	Metallurgy & Metallurgical Engineering
WOS类目	Metallurgy & Metallurgical Engineering
WOS记录号	WOS:001320333900003
出版者	SCIENCE PRESS
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/191579
专题	中国科学院金属研究所
通讯作者	Zhang, Shaohua
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 3.Xian Aerosp Prop Inst, Xian 710100, Peoples R China
推荐引用方式 GB/T 7714	Cao, Shuting,Zhao, Jian,Gong, Tongzhao,et al. Effects of Cu Content on the Microstructure and Tensile Property of K4061 Alloy[J]. ACTA METALLURGICA SINICA,2024,60(9):1179-1188.
APA	Cao, Shuting,Zhao, Jian,Gong, Tongzhao,Zhang, Shaohua,&Zhang, Jian.(2024).Effects of Cu Content on the Microstructure and Tensile Property of K4061 Alloy.ACTA METALLURGICA SINICA,60(9),1179-1188.
MLA	Cao, Shuting,et al."Effects of Cu Content on the Microstructure and Tensile Property of K4061 Alloy".ACTA METALLURGICA SINICA 60.9(2024):1179-1188.