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Effect of C/Mo Duplex-coating on Thermal Residual Stresses in SiCf/Ti2AlNb Composites

  • Advanced Materials
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Abstract

Three-dimensional finite element physical models considering the layered distribution of materials at the interface were developed to study the effect of the coating system on distributions of thermal residual stresses in SiCf/Ti2AlNb composites. Two coating systems were comparatively studied, namely C coating and C/Mo duplex-coating. The thermal residual stresses after 1 080 °C/1 h solution treatment and 800 °C/20 h ageing treatment in the composites were also analyzed. The experimental results show that Mo coating can decrease thermal residual stress magnitude in the matrix. However, it would increase the thermal residual stresses in the interfacial reaction layer of TiC. The change of radial thermal residual stress in TiC layer is inconspicuous after solid solution and ageing treatment, but the hoop and axial thermal residual stresses increase obviously. However, the heat treatment can obviously reduce hoop and axial thermal residual stresses of the matrix, which is benefit to restrain the initiation and propagation of cracks in the matrix.

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Authors and Affiliations

  1. School of Electromechanical and Information Technology, Yiwu Industrial and Commercial College, Yiwu, Zhejiang, 322000, China

    Tangkui Zhu  (朱堂葵)

  2. School of Materials Science, Northwestern Polytechnical University, Xi’an, 710072, China

    Degui Wang & Xian Luo  (罗贤)

Authors
  1. Tangkui Zhu  (朱堂葵)
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  2. Degui Wang
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  3. Xian Luo  (罗贤)
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Corresponding author

Correspondence to Xian Luo  (罗贤).

Additional information

Funded by the National Natural Science Foundation of China (No. 51201134), and the Key Research Foundation of Yiwu Industrial and Commercial College (No. ZD2020CS414-01)

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Zhu, T., Wang, D. & Luo, X. Effect of C/Mo Duplex-coating on Thermal Residual Stresses in SiCf/Ti2AlNb Composites. J. Wuhan Univ. Technol.-Mat. Sci. Edit. 36, 526–532 (2021). https://doi.org/10.1007/s11595-021-2440-8

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  • DOI: https://doi.org/10.1007/s11595-021-2440-8

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