Influence of heat treatment on the microstructure and mechanical properties of Al-Mg-Si alloy fabricated by double wires plus arc additive manufacturing

被引：5

作者：

Zhong, Hao ^{[1
]}

Qi, Bojin ^{[1
]}

Qi, Zewu ^{[1
,2
]}

Zeng, Caiyou ^{[1
]}

Jiang, Zihao ^{[1
]}

Zhou, Yubin ^{[1
]}

Li, Hongwei ^{[1
,3
]}

Zhang, Ruize ^{[4
]}

Cong, Baoqiang ^{[1
]}

机构：

[1] Beihang Univ, Sch Mech Engn & Automat, Beijing 100191, Peoples R China

[2] Harbin Inst Technol, State Key Lab Adv Welding & Joining, Harbin 150001, Peoples R China

[3] Beijing Hangxing Machinery Mfg Co Ltd, Beijing 100013, Peoples R China

[4] Capital Aerosp Machinery Co Ltd, Beijing 100076, Peoples R China

来源：

JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T | 2024年 / 30卷

基金：

中国博士后科学基金; 中国国家自然科学基金; 北京市自然科学基金;

关键词：

Wire plus arc additive manufacturing; Al-Mg-Si aluminum alloy; Heat treatment; Microstructure; Mechanical property; 2024; ALUMINUM-ALLOY;

D O I：

10.1016/j.jmrt.2024.03.147

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Al-3.4Mg-1.7Si alloy single-pass and multi-layer thin wall components were fabricated with double wires + arc additive manufacturing procedure. Heat treatment was performed to further process the component. The microstructure and mechanical properties of the as-deposited and heat-treated components were comparatively investigated. After heat treatment, the grains grow up slightly, and the phase particles change to distribute semicontinuously, and a large number of nanoscale monoclinic beta '' precipitated phases generate. The porosity increases to 0.0486% from as-deposited 0.0348%. The microhardness, ultimate tensile strength and yield strength are respectively improved by 25%,79%, and 228% with heat treatment process, with the hardness uniformity and elongation decreased.

引用

页码：910 / 918

页数：9

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