Structural Mechanics Calculations of SiC/Mo-Re Composites with Improved High Temperature Creep Properties

Li, Ke; Kashkarov, Egor; Ma, Hailiang; Fan, Ping; Zhang, Qiaoli; Lider, Andrey; Yuan, Daqing

doi:10.3390/ma18153459

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Structural Mechanics Calculations of SiC/Mo-Re Composites with Improved High Temperature Creep Properties

by

Ke Li

^1,2,

Egor Kashkarov

^2,*

,

Hailiang Ma

¹,

Ping Fan

¹,

Qiaoli Zhang

¹,

Andrey Lider

^2,†

and

Daqing Yuan

^1,*

¹

Department of Nuclear Physics, China Institute of Atomic Energy, Beijing 102413, China

²

School of Nuclear Science and Engineering, National Research Tomsk Polytechnic University, Tomsk 634050, Russia

^*

Authors to whom correspondence should be addressed.

^†

Professor Lider was a vital contributor to the study and had completed his significations of the research before his passing.

Materials 2025, 18(15), 3459; https://doi.org/10.3390/ma18153459

Submission received: 18 June 2025 / Revised: 17 July 2025 / Accepted: 21 July 2025 / Published: 23 July 2025

(This article belongs to the Section Advanced Composites)

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Abstract

In the present work, we design a laminated composite composed of molybdenum–rhenium alloy and silicon carbide ceramics for use in space reactors as a candidate structural material with neutron spectral shift properties. The influence of the internal microstructure on the mechanical properties is investigated by finite element simulation based on scale separation. The results of the study showed that the incorporation of gradient transition layers between the metallic and ceramic phases effectively mitigates thermally induced local stresses arising from mismatches in coefficients of thermal expansion. By optimizing the composition of the gradient transition layers, the stress distribution within the composite under operating conditions has been adjusted. As a result, the stress experienced by the alloy phase is significantly reduced, potentially extending the high-temperature creep rupture life.

Keywords: laminated composite; finite element simulation; refractory materials; silicon carbide; molybdenum–rhenium alloy

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MDPI and ACS Style

Li, K.; Kashkarov, E.; Ma, H.; Fan, P.; Zhang, Q.; Lider, A.; Yuan, D. Structural Mechanics Calculations of SiC/Mo-Re Composites with Improved High Temperature Creep Properties. Materials 2025, 18, 3459. https://doi.org/10.3390/ma18153459

AMA Style

Li K, Kashkarov E, Ma H, Fan P, Zhang Q, Lider A, Yuan D. Structural Mechanics Calculations of SiC/Mo-Re Composites with Improved High Temperature Creep Properties. Materials. 2025; 18(15):3459. https://doi.org/10.3390/ma18153459

Chicago/Turabian Style

Li, Ke, Egor Kashkarov, Hailiang Ma, Ping Fan, Qiaoli Zhang, Andrey Lider, and Daqing Yuan. 2025. "Structural Mechanics Calculations of SiC/Mo-Re Composites with Improved High Temperature Creep Properties" Materials 18, no. 15: 3459. https://doi.org/10.3390/ma18153459

APA Style

Li, K., Kashkarov, E., Ma, H., Fan, P., Zhang, Q., Lider, A., & Yuan, D. (2025). Structural Mechanics Calculations of SiC/Mo-Re Composites with Improved High Temperature Creep Properties. Materials, 18(15), 3459. https://doi.org/10.3390/ma18153459

Note that from the first issue of 2016, this journal uses article numbers instead of page numbers. See further details here.

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