A novel method for improving the microstructure and the properties of Al-Si-Cu alloys prepared using rapid solidification/powder metallurgy

被引：14
|
作者：
Zhao, Xingming [1 ]
Meng, Jingran [1 ]
Zhang, Chi [1 ]
Wei, Wei [1 ]
Wu, Fufa [1 ]
Zhang, Guangan [1 ]
机构：
[1] Liaoning Univ Technol, Sch Mat Sci & Engn, Mat Proc Engn, Jinzhou 121001, Peoples R China
来源：
MATERIALS TODAY COMMUNICATIONS | 2023年 / 35卷
关键词：
Rapid solidification; powder metallurgy; Al; -Si; -Cu; Extrusion; Crushed oxide film; Mechanical properties; ALUMINUM-ALLOYS; TENSILE PROPERTIES; BEHAVIOR; COMPOSITES; PARAMETERS; MECHANISM;
D O I：
10.1016/j.mtcomm.2023.105802
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A novel method based on the combination of rapid solidification/powder metallurgy with hot extrusion was proposed in the present study for improving the microstructure and properties of Al-Si-Cu alloys. The phase composition, microstructure, and mechanical properties of the extruded Al-Si-Cu alloy were systematically investigated. The experimental results revealed that the extruded Al-Si-Cu alloy comprised five kinds of phases, namely, the & alpha;-Al, fi-Si, Al2O3, CuAl2, and Cu4Si phases. The extrusion process significantly reduced the porosity while improving the density of the Al-Si-Cu alloy. The tensile strength and elongation values of the extruded alloy were much larger than those of the unextruded alloy. The use of the proposed method improved the mechanical properties of the Al-Si-Cu alloy greatly compared to when using the traditional casting method.
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收藏
页数：9
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