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首页> 外文期刊>Journal of Nuclear Materials: Materials Aspects of Fission and Fusion >Thermal shock fatigue behaviors of various W-0.5 wt%ZrC materials under repetitive transient heat loads
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Thermal shock fatigue behaviors of various W-0.5 wt%ZrC materials under repetitive transient heat loads

机译：重复瞬态热负荷下，各种W-0.5wt％ZRC材料的热冲击疲劳行为

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摘要

Thermal shock fatigue resistance behaviors of a series of rolled W-0.5 wt%ZrC materials (WZC) fabricated using tungsten powders with different powder grain sizes of 0.2 mu m (0.2WZC), 0.5 mu m (0.5WZC) and 2.8 mu m (2.8WZC) were investigated by simulating the effects of edge-localized modes in fusion devices like transient heat events on these WZC specimens. The as prepared three different specimens exhibit different cracking thresholds and cracking patterns under repetitive (100 shots) transient heat loads. The cracking thresholds of the as-rolled 0.2WZC and 0.5WZC are in the range of 0.22-0.33 GW/m(2), but <0.22 GW/m(2) for the case of 2.8WZC. Moreover, recrystallization reduces the thermal shock fatigue resistance and leads to the decrease of cracking thresholds and the increase of cracking densities. Tensile results show that both along the rolling and transverse directions, the as-rolled 0.2WZC and 0.5WZC have the comparable ultimate tensile strengths (UTS) in a relatively high level, but the as-rolled 2.8WZC has smaller ones. The correlation between the thermal shock resistance, microstructures and tensile properties has been proposed. (C) 2020 Elsevier B.V. All rights reserved.
机译：使用不同粉末粒径为0.2μm（0.2wzc），0.5μm（0.5wzc）和2.8 mu m（0.8μm（0.5μm）（通过模拟这些WZC样本上的瞬态热事件等融合装置中边缘局部化模式的影响来研究2.8WZC）。如制备的三种不同的样本在重复（100次）瞬态热负荷下表现出不同的裂缝阈值和裂化图案。卷积0.2wzc和0.5wzc的裂化阈值在0.22-0.33gw / m（2）的范围内，但为2.8wzc的情况下为<0.22 gw / m（2）。此外，重结晶可降低热冲击疲劳性，并导致裂缝阈值的降低和裂化密度的增加。拉伸结果表明，沿滚动和横向方向，卷起的0.2WZC和0.5WZC具有相对高水平的相当的极限拉伸强度（UTS），但是轧制的2.8WZC具有较小的辊帘。提出了热抗冲击性，微结构和拉伸性能之间的相关性。 （c）2020 Elsevier B.v.保留所有权利。

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  • 作者

    Wang M. M.; Xie Z. M.; Deng H. W.; Liu R.; Yang J. F.; Zhang T.; Wang X. P.; Fang Q. F.; Liu C. S.; Liu X.; Xiong Y.;

  • 作者单位

    Chinese Acad Sci Inst Solid State Phys Key Lab Mat Phys Hefei 230031 Peoples R China;

    Chinese Acad Sci Inst Solid State Phys Key Lab Mat Phys Hefei 230031 Peoples R China;

    Chinese Acad Sci Inst Solid State Phys Key Lab Mat Phys Hefei 230031 Peoples R China;

    Chinese Acad Sci Inst Solid State Phys Key Lab Mat Phys Hefei 230031 Peoples R China;

    Chinese Acad Sci Inst Solid State Phys Key Lab Mat Phys Hefei 230031 Peoples R China;

    Univ GuangZhou Sch Phys &

    Elect Engn Guangzhou 510405 Guangdong Peoples R China;

    Chinese Acad Sci Inst Solid State Phys Key Lab Mat Phys Hefei 230031 Peoples R China;

    Chinese Acad Sci Inst Solid State Phys Key Lab Mat Phys Hefei 230031 Peoples R China;

    Chinese Acad Sci Inst Solid State Phys Key Lab Mat Phys Hefei 230031 Peoples R China;

    Southwestern Inst Phys POB 432 Chengdu 610041 Sichuan Peoples R China;

    Southwest Univ Sci &

    Technol State Key Lab Environm Friendly Energy Mat Mianyang 621010 Sichuan Peoples R China;

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  • 正文语种 eng
  • 中图分类 原子能技术;
  • 关键词

    Thermal shock; Tungsten-based materials; Cracking threshold; Microstructure; Tensile property;

    机译：热冲击;基于钨的材料;裂解阈值;微观结构;拉伸性能;

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