Oxidation behaviors of a Ni–Cr–W based superalloy with different microstructures

Ruifeng Dong; Yumo Guo; Rui Ma; Xiaomin Yang; Hua Hou; Yuhong Zhao

Journal of Materials Research and Technology (Jul 2024)

Oxidation behaviors of a Ni–Cr–W based superalloy with different microstructures

Ruifeng Dong,
Yumo Guo,
Rui Ma,
Xiaomin Yang,
Hua Hou,
Yuhong Zhao

Affiliations

Ruifeng Dong: School of Materials Science and Engineering, Collaborative Innovation Center of Ministry of Education and Shanxi Province for High-performance Al/Mg Alloy Materials, North University of China, Taiyuan 030051, China
Yumo Guo: School of Materials Science and Engineering, Collaborative Innovation Center of Ministry of Education and Shanxi Province for High-performance Al/Mg Alloy Materials, North University of China, Taiyuan 030051, China
Rui Ma: School of Materials Science and Engineering, Collaborative Innovation Center of Ministry of Education and Shanxi Province for High-performance Al/Mg Alloy Materials, North University of China, Taiyuan 030051, China
Xiaomin Yang: School of Materials Science and Engineering, Collaborative Innovation Center of Ministry of Education and Shanxi Province for High-performance Al/Mg Alloy Materials, North University of China, Taiyuan 030051, China
Hua Hou: School of Materials Science and Engineering, Collaborative Innovation Center of Ministry of Education and Shanxi Province for High-performance Al/Mg Alloy Materials, North University of China, Taiyuan 030051, China; School of Materials Science and Engineering, Taiyuan University of Science and Technology, Taiyuan, Shanxi 030024, China
Yuhong Zhao: School of Materials Science and Engineering, Collaborative Innovation Center of Ministry of Education and Shanxi Province for High-performance Al/Mg Alloy Materials, North University of China, Taiyuan 030051, China; Beijing Advanced Innovation Center for Materials Genome Engineering, University of Science and Technology Beijing, Beijing 100083, China; Institute for Materials Intelligent Technology, Liaoning Academy of Materials, Shenyang 110004, China; Corresponding author. School of Materials Science and Engineering, Collaborative Innovation Center of Ministry of Education and Shanxi Province for High-performance Al/Mg Alloy Materials, North University of China, Taiyuan 030051, China.

Journal volume & issue: Vol. 31
pp. 739 – 746

Abstract

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Oxidation behaviors of a Ni–Cr–W based superalloy were investigated in terms of microstructural characteristics. It was found that the specimens with small grains present a better oxidation resistance owing to their higher density of grain boundaries. Based on analyses of the products of oxidation, the oxidation kinetics, the morphologies and the structures of oxide scales, the oxidation mechanisms correlated with the outward diffusions of metal cations were proposed. The results of this work indicated that grain refinement is one of effective measures to enhance the oxidation resistance of the investigated alloy.

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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