Improved properties of wire arc directed energy deposited thin-walled Al-6Mg-0.3Sc component via laser shock peening

Xuewei Fang; Kai Li; Minghua Ma; Chang Liu; Yao Zhang; Jian Zhou; Zhanxin Li; Jiahao Shang; Ke Huang; Bingheng Lu

doi:10.1080/17452759.2024.2370956

Virtual and Physical Prototyping (Dec 2024)

Improved properties of wire arc directed energy deposited thin-walled Al-6Mg-0.3Sc component via laser shock peening

Xuewei Fang,
Kai Li,
Minghua Ma,
Chang Liu,
Yao Zhang,
Jian Zhou,
Zhanxin Li,
Jiahao Shang,
Ke Huang,
Bingheng Lu

Affiliations

Xuewei Fang: State Key Laboratory for Manufacturing Systems Engineering, School of Mechanical Engineering, Xi’an Jiaotong University, Xi’an, People’s Republic of China
Kai Li: State Key Laboratory for Manufacturing Systems Engineering, School of Mechanical Engineering, Xi’an Jiaotong University, Xi’an, People’s Republic of China
Minghua Ma: State Key Laboratory for Manufacturing Systems Engineering, School of Mechanical Engineering, Xi’an Jiaotong University, Xi’an, People’s Republic of China
Chang Liu: State Key Laboratory for Manufacturing Systems Engineering, School of Mechanical Engineering, Xi’an Jiaotong University, Xi’an, People’s Republic of China
Yao Zhang: State Key Laboratory for Manufacturing Systems Engineering, School of Mechanical Engineering, Xi’an Jiaotong University, Xi’an, People’s Republic of China
Jian Zhou: State Key Laboratory for Manufacturing Systems Engineering, School of Mechanical Engineering, Xi’an Jiaotong University, Xi’an, People’s Republic of China
Zhanxin Li: State Key Laboratory for Manufacturing Systems Engineering, School of Mechanical Engineering, Xi’an Jiaotong University, Xi’an, People’s Republic of China
Jiahao Shang: State Key Laboratory for Manufacturing Systems Engineering, School of Mechanical Engineering, Xi’an Jiaotong University, Xi’an, People’s Republic of China
Ke Huang: State Key Laboratory for Manufacturing Systems Engineering, School of Mechanical Engineering, Xi’an Jiaotong University, Xi’an, People’s Republic of China
Bingheng Lu: State Key Laboratory for Manufacturing Systems Engineering, School of Mechanical Engineering, Xi’an Jiaotong University, Xi’an, People’s Republic of China

DOI: https://doi.org/10.1080/17452759.2024.2370956
Journal volume & issue: Vol. 19, no. 1

Abstract

Read online

Heat treatment free aluminum alloys have been developed for wire arc directed energy deposition (DED) large thin-walled components, but their further performance enhancement methods remain unexplored. In this study, laser shock peening (LSP) treatment was performed on wire arc DED Al-6Mg-0.3Sc components. The results show that LSP creates a gradient microstructure with submicro-grains near the surface. The effects of LSP on defects were quantified by quasi-in-situ CT, demonstrating a reduction in porosity by over 68% together with decreased size. Simultaneously, tensile strength increases by 39.5% to 295.8 ± 6.4 MPa with only a marginal loss of elongation, as compared to the as-deposited (AD) state. This was due to the accumulation of dislocations and continuous dynamic recrystallization lead to grain refinement, as well as the appearance of a triple heterogeneous microstructure. Therefore, this study offers a novel solution for manufacturing of high-performance heat treatment free large thin-walled components.

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

About the journal

Abstract

Keywords