Corrosion resistance improvement of multi-principal element alloy by tailored structure with heterogeneous grains

Xinyi Liu; Wanpeng Li; Wenyu Chen; Tzu-Hsiu Chou; Chenchong Wang; Jianmin Ren; Xu Wang; Jacob C. Huang; Ming Wu

Journal of Materials Research and Technology (Mar 2023)

Corrosion resistance improvement of multi-principal element alloy by tailored structure with heterogeneous grains

Xinyi Liu,
Wanpeng Li,
Wenyu Chen,
Tzu-Hsiu Chou,
Chenchong Wang,
Jianmin Ren,
Xu Wang,
Jacob C. Huang,
Ming Wu

Affiliations

Xinyi Liu: School of Mechanical Engineering, Liaoning Petrochemical University, Fushun, Liaoning, 113001, China; College of Pipeline and Civil Engineering, China University of Petroleum, Qingdao, Shandong, 266555, China
Wanpeng Li: Department of Materials Science & Engineering; Hong Kong Institute for Advanced Study, City University of Hong Kong, Kowloon, Hong Kong
Wenyu Chen: Department of Materials Science & Engineering; Hong Kong Institute for Advanced Study, City University of Hong Kong, Kowloon, Hong Kong
Tzu-Hsiu Chou: Department of Materials Science & Engineering; Hong Kong Institute for Advanced Study, City University of Hong Kong, Kowloon, Hong Kong
Chenchong Wang: State Key Laboratory of Rolling and Automation, School of Materials Science and Engineering, Northeastern University, Shenyang, Liaoning, 110819, PR China
Jianmin Ren: School of Mechanical Engineering, Liaoning Petrochemical University, Fushun, Liaoning, 113001, China
Xu Wang: School of Mechanical Engineering, Liaoning Petrochemical University, Fushun, Liaoning, 113001, China; Corresponding author.
Jacob C. Huang: Department of Materials Science & Engineering; Hong Kong Institute for Advanced Study, City University of Hong Kong, Kowloon, Hong Kong; Corresponding author.
Ming Wu: School of Mechanical Engineering, Liaoning Petrochemical University, Fushun, Liaoning, 113001, China

Journal volume & issue: Vol. 23
pp. 5301 – 5309

Abstract

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The Co40Cr20Ni30Al5Ti5 multi-principal element alloy (MPEA) with heterogeneous grain structure (HGS) and nano L12 precipitates is successfully designed by cold rolling and proper heat treatment. The HGS alloy exhibits excellent corrosion resistance and passivation performance, originated from high-density grain boundaries in fine grains and abundant defects in deformed grains, which encourages surface to form a thicker and more efficient passive layer to inhibit the initial pitting corrosion. This finding indicates that the developed MPEA with HGS can possess an excellent combination of corrosion resistance and mechanical properties, providing highly positive factors for future applications.

Published in Journal of Materials Research and Technology

ISSN: 2238-7854 (Print); 2214-0697 (Online)
Publisher: Elsevier
Country of publisher: Netherlands
LCC subjects: Technology: Mining engineering. Metallurgy
Website: https://www.journals.elsevier.com/journal-of-materials-research-and-technology/

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