Sc/Zr microalloying on strength-corrosion performance synergy of wire-arc directed energy deposited Al-Mg

Yubin Zhou; Zewu Qi; Baoqiang Cong; Zihao Jiang; Xinyi Cai; Hongwei Li; Jiaqi Zhang; Chaofang Dong; Xing He; Sanbao Lin; Xiaoyu Cai; Bojin Qi

doi:10.1080/17452759.2024.2358981

Virtual and Physical Prototyping (Dec 2024)

Sc/Zr microalloying on strength-corrosion performance synergy of wire-arc directed energy deposited Al-Mg

Yubin Zhou,
Zewu Qi,
Baoqiang Cong,
Zihao Jiang,
Xinyi Cai,
Hongwei Li,
Jiaqi Zhang,
Chaofang Dong,
Xing He,
Sanbao Lin,
Xiaoyu Cai,
Bojin Qi

Affiliations

Yubin Zhou: School of Mechanical Engineering and Automation, Beihang University, Beijing, People’s Republic of China
Zewu Qi: School of Mechanical Engineering and Automation, Beihang University, Beijing, People’s Republic of China
Baoqiang Cong: School of Mechanical Engineering and Automation, Beihang University, Beijing, People’s Republic of China
Zihao Jiang: School of Mechanical Engineering and Automation, Beihang University, Beijing, People’s Republic of China
Xinyi Cai: School of Mechanical Engineering and Automation, Beihang University, Beijing, People’s Republic of China
Hongwei Li: School of Mechanical Engineering and Automation, Beihang University, Beijing, People’s Republic of China
Jiaqi Zhang: School of Mechanical Engineering and Automation, Beihang University, Beijing, People’s Republic of China
Chaofang Dong: Beijing Advanced Innovation Center for Materials Genome Engineering, Key Laboratory for Corrosion and Protection (MOE), Institute for Advanced Materials and Technology, University of Science and Technology Beijing, Beijing, People’s Republic of China
Xing He: Beijing Advanced Innovation Center for Materials Genome Engineering, Key Laboratory for Corrosion and Protection (MOE), Institute for Advanced Materials and Technology, University of Science and Technology Beijing, Beijing, People’s Republic of China
Sanbao Lin: State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Harbin, People’s Republic of China
Xiaoyu Cai: State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Harbin, People’s Republic of China
Bojin Qi: School of Mechanical Engineering and Automation, Beihang University, Beijing, People’s Republic of China

DOI: https://doi.org/10.1080/17452759.2024.2358981
Journal volume & issue: Vol. 19, no. 1

Abstract

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WADED Al-Mg and Al-Mg-Sc-Zr aluminium alloy thin-wall components were produced. Heat treatment (350°C aging for 4 h) was further conducted. The effects of Sc/Zr addition on porosity, microstructure, mechanical properties and corrosion behaviour were investigated. With Sc/Zr adding, pore area fraction decreased from 0.208 to 0.005% and grain size decreased from 84.34 to 19.54 μm. In WADED Al-Mg-Sc-Zr component, microstructure showed refined equiaxed grains. Mechanical properties were improved with 360 MPa ultimate tensile strength (UTS), 185 MPa yield strength, and 23.31% elongation. After heat treatment, UTS increased to 388 MPa with good ductility (22.53%) maintained. The grain refinement and Al3(Sc, Zr) particles were the key factors for mechanical property improvement. The corrosion behaviour was improved with introduced Sc/Zr and further optimised after heat treatment. The corrosion exhibited layered characteristics due to the distribution of primary Al3(Sc, Zr) while minor-size secondary Al3(Sc, Zr) along grain boundaries improved the corrosion behaviour.

Published in Virtual and Physical Prototyping

ISSN: 1745-2759 (Print); 1745-2767 (Online)
Publisher: Taylor & Francis Group
Country of publisher: United Kingdom
LCC subjects: Science; Technology: Manufactures
Website: https://www.tandfonline.com/nvpp

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