Quantitative Characterization of Microstructure and Mechanical Properties of Al-Cu-Mn Alloys Based on Mg and Sc Alloying

被引：0
|
作者：
Zhang, Mingshan [1 ]
Zhang, Runze [1 ]
Tian, Yaqiang [1 ]
Song, Hao [1 ]
Zhang, Boao [1 ]
Wei, Yingli [1 ]
Zhao, Zilong [2 ]
Chen, Liansheng [1 ]
机构：
[1] North China Univ Sci & Technol, Minist Educ Modern Met Technol, Key Lab, Tangshan 063210, Peoples R China
[2] Sun Yat Sen Univ, Sch Chem Engn & Technol, Zhuhai 519000, Peoples R China
来源：
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE | 2025年
关键词：
Al-Cu-Mn alloys; alloying; mechanical properties; microstructure; strengthening mechanisms; STRENGTHENING MECHANISMS; ALUMINUM-ALLOYS; ZR; AG; REFINEMENT; RESISTANCE; CORROSION;
D O I：
10.1007/s11665-025-10969-1
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
It is well known that alloying is one of the effective methods to control the microstructure and improve the comprehensive properties of alloys. In order to develop Al-Cu-Mn alloys with high strength, we studied the microstructure and mechanical properties of Al-Cu-Mn alloy and Al-Cu-Mn-Mg-Sc alloy under T6 heat treatment and quantitatively characterized the effect of Mg and Sc on the properties of Al-Cu-Mn alloys. The results show that the addition of Mg and Sc refines the grain size of the alloy significantly. The yield strength and ultimate tensile strength increase from 222.9 to 278.5 MPa and 280.4 to 346.0 MPa, respectively, and the elongation decreases slightly from 8.68 to 5.98%. The quantitative characterization shows that the precipitation strengthening is the main strengthening mechanism, and the contributions of precipitation strengthening to the yield strength of Al-Cu-Mn alloy and Al-Cu-Mn-Mg-Sc alloy are 96.1 and 141.8 MPa, respectively.
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页数：11
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