Optimizing the strength-ductility balance of microalloyed Al-Mg-Si casting alloys

被引：1

作者：

Luo, T. R. ^{[1
]}

Fan, Z. Z. ^{[1
,2
,3
]}

Hu, H. X. ^{[1
]}

Tian, Y. Z. ^{[1
,4
]}

机构：

[1] Northeastern Univ, Sch Mat Sci & Engn, Key Lab Anisotropy & Texture Mat, Minist Educ, Shenyang 110819, Peoples R China

[2] Beijing Inst Aeronaut Mat, Beijing 100095, Peoples R China

[3] Beijing Adv Engn Technol & Applicat Res Ctr Alumin, Beijing 100095, Peoples R China

[4] Northeastern Univ, Res Ctr Met Wires, Shenyang 110819, Peoples R China

来源：

MATERIALS LETTERS | 2025年 / 378卷

关键词：

Metal mold casting; Al-Mg-Si alloy; Microstructure; Mechanical properties; Heat treatment; BOUNDARY WETTING TRANSITION; MECHANICAL-PROPERTIES; MICROSTRUCTURE;

D O I：

10.1016/j.matlet.2024.137645

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

It is desired to optimize the strength-ductility balance of Al-Mg-Si casting alloy. In this study, Al-6 Mg-1Si-0.4Mn0.5Cu-0.15Zr (6 Mg) and Al-8 Mg-1Si-0.8Mn-1.5Cu-0.15Zr (8 Mg) alloys were designed. The microstructure and mechanical properties of the alloys were further modified by heat treatment. The as-cast 6 Mg alloy exhibits balanced ultimate tensile strength (UTS) of 268.7 f 11.5 MPa and elongation to failure (EF) of 5 f 0.8 %, in contrast, the EF of the 8 Mg alloy is only 1.4 f 0.3 %. Further heat treatment impacts slightly on the tensile properties of the 6 Mg alloy but enhances the ductility of the 8 Mg alloy significantly. Mechanisms for the distinct responses on the heat treatment of the alloys were discussed.

引用

页数：4

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