• Title/Summary/Keyword: Mechanical technology

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Creep of stainless steel under heat flux cyclic loading (500-1000℃) with different mechanical preloads in a vacuum environment using 3D-DIC

  • Su, Yong;Pan, Zhiwei;Peng, Yongpei;Huang, Shenghong;Zhang, Qingchuan
    • Smart Structures and Systems
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    • v.24 no.6
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    • pp.759-768
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    • 2019

  • In nuclear fusion reactors, the key structural component (i.e., the plasma-facing component) undergoes high heat flux cyclic loading. To ensure the safety of fusion reactors, an experimental study on the temperature-induced creep of stainless steel under heat flux cyclic loading was performed in the present work. The strains were measured using a stereo digital image correlation technique (3D-DIC). The influence of the heat haze was eliminated, owing to the use of a vacuum environment. The specimen underwent heat flux cycles ($500^{\circ}C-1000^{\circ}C$) with different mechanical preloads (0 kN, 10 kN, 30 kN, and 50 kN). The results revealed that, for a relatively large preload (for example, 50 kN), a single temperature cycle can induce a residual strain of up to $15000{\mu}{\varepsilon}$.

  • https://doi.org/10.12989/sss.2019.24.6.759 인용 KSCI