Effect of Ru on the precipitation of the TCP phase from the γ-γʹ microstructural degradation analysis

Yiran Cui; Ming Sun; Li Wang; Hao Fan; Junbo Zhao; Haibo Long; Shengcheng Mao; Ze Zhang; Xiaodong Han

Journal of Materials Research and Technology (May 2024)

Effect of Ru on the precipitation of the TCP phase from the γ-γʹ microstructural degradation analysis

Yiran Cui,
Ming Sun,
Li Wang,
Hao Fan,
Junbo Zhao,
Haibo Long,
Shengcheng Mao,
Ze Zhang,
Xiaodong Han

Affiliations

Yiran Cui: Beijing Key Laboratory of Microstructure and Property of Advanced Materials, College of Materials Science and Engineering, Beijing University of Technology, Beijing, 100124, China
Ming Sun: Beijing Key Laboratory of Microstructure and Property of Advanced Materials, College of Materials Science and Engineering, Beijing University of Technology, Beijing, 100124, China
Li Wang: Beijing Key Laboratory of Microstructure and Property of Advanced Materials, College of Materials Science and Engineering, Beijing University of Technology, Beijing, 100124, China
Hao Fan: Beijing Key Laboratory of Microstructure and Property of Advanced Materials, College of Materials Science and Engineering, Beijing University of Technology, Beijing, 100124, China
Junbo Zhao: Beijing Key Laboratory of Microstructure and Property of Advanced Materials, College of Materials Science and Engineering, Beijing University of Technology, Beijing, 100124, China
Haibo Long: Beijing Key Laboratory of Microstructure and Property of Advanced Materials, College of Materials Science and Engineering, Beijing University of Technology, Beijing, 100124, China; Corresponding author.
Shengcheng Mao: Beijing Key Laboratory of Microstructure and Property of Advanced Materials, College of Materials Science and Engineering, Beijing University of Technology, Beijing, 100124, China
Ze Zhang: State Key Laboratory of Silicon Materials, Department of Materials Science and Engineering, Zhejiang University, 310027, Hangzhou, China
Xiaodong Han: Beijing Key Laboratory of Microstructure and Property of Advanced Materials, College of Materials Science and Engineering, Beijing University of Technology, Beijing, 100124, China; Department of Materials Science and Engineering, Southern University of Science and Technology, Guangdong, 518055, China

Journal volume & issue: Vol. 30
pp. 3213 – 3219

Abstract

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This work investigates the effect of Ru on the precipitation of the topologically close-packed (TCP) phase from the γ-γʹ microstructural degradation analysis. The addition of Ru is found to delay the precipitation time of the TCP phase from 100 h to 1000 h after thermal exposure at 950 °C. The effect of Ru on the γ-γʹ microstructural degradation is also investigated. Adding Ru slightly decreases the coarsening rate of the γʹ size and promotes the reduction of the volume fraction of γʹ phase. The reduction of the volume fraction of γʹ phase causes the ''inverse partitioning'' effect and increases the solution limit of the TCP forming element in the matrix. These help inhibit the precipitation of the TCP phases in Ni-based single crystal superalloys during thermal exposure.

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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