Effects of TCP and creep cavity on creep life in the rafting regime for Ru-containing Nickel-based single crystal superalloys

Yunsong Zhao; Junbo Zhao; Haibo Long; Yinong Liu; Yanhui Chen; Shengcheng Mao; Ze Zhang; Xiaodong Han

doi:10.1080/21663831.2023.2207580

Materials Research Letters (Aug 2023)

Effects of TCP and creep cavity on creep life in the rafting regime for Ru-containing Nickel-based single crystal superalloys

Yunsong Zhao,
Junbo Zhao,
Haibo Long,
Yinong Liu,
Yanhui Chen,
Shengcheng Mao,
Ze Zhang,
Xiaodong Han

Affiliations

Yunsong Zhao: Beijing Key Laboratory of Microstructure and Property of Advanced Materials, Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing, People’s Republic of China
Junbo Zhao: Beijing Key Laboratory of Microstructure and Property of Advanced Materials, Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing, People’s Republic of China
Haibo Long: Beijing Key Laboratory of Microstructure and Property of Advanced Materials, Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing, People’s Republic of China
Yinong Liu: Department of Mechanical Engineering, The University of Western Australia, Perth, Australia
Yanhui Chen: Beijing Key Laboratory of Microstructure and Property of Advanced Materials, Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing, People’s Republic of China
Shengcheng Mao: Beijing Key Laboratory of Microstructure and Property of Advanced Materials, Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing, People’s Republic of China
Ze Zhang: State Key Laboratory of Silicon Materials, Department of Materials Science and Engineering, Zhejiang University, Hangzhou, People’s Republic of China
Xiaodong Han: Beijing Key Laboratory of Microstructure and Property of Advanced Materials, Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing, People’s Republic of China

DOI: https://doi.org/10.1080/21663831.2023.2207580
Journal volume & issue: Vol. 11, no. 8
pp. 623 – 629

Abstract

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Ru is crucial in improving creep properties in Nickel-based single-crystal superalloys. The effect of Ru content on the creep behavior of nickel-based single-crystal superalloy was studied. Ru exhibits unprecedented mechanical properties, increasing the creep life at 1120 °C but decreasing it at 1180 °C. This is due to the competition in the stress concentration formed between the topologically close-packed phases and the creep cavity. They are both related to the dissociation of the γ′ phase. The effect of oxidation caused by the addition of Ru is lower than these two factors. This work helps to recognize the comprehensive effect of Ru and can provide guidance for alloy design in the future.

Published in Materials Research Letters

ISSN: 2166-3831 (Online)
Publisher: Taylor & Francis Group
Country of publisher: United Kingdom
LCC subjects: Technology: Electrical engineering. Electronics. Nuclear engineering: Materials of engineering and construction. Mechanics of materials
Website: https://www.tandfonline.com/journals/tmrl

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