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首页> 外文期刊>Materials Science and Engineering >Influence of deep cryogenic cycling on the rejuvenation and plasticization of TiZrHfBeCu high-entropy bulk metallic glass
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Influence of deep cryogenic cycling on the rejuvenation and plasticization of TiZrHfBeCu high-entropy bulk metallic glass

机译：深浊循环对Tizrhfbecu高熵散装金属玻璃恢复活化和塑化的影响

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摘要

The effects of deep cryogenic cycling treatment (DCT) on the rejuvenation and room-temperature compressive properties of a TiZrHfBeCu high-entropy bulk metallic glass (HE-BMG) were studied. After DCT, the fully amorphous structure of TiZrHfBeCu HE-BMG remained, but the relaxation enthalpy showed obvious rejuvenation behavior. Upon increasing the number of cycles, the room-temperature plasticity of TiZrHfBeCu HE-BMG gradually increased from 0.62% to 5.38%, with no obvious change in the yield strength. The hardness and density of the high-entropy amorphous alloy decreased with the number of DCT cycles. The DCT-induced rejuvenation and plasticization mechanisms were explained based on the shear transformation zone (STZ) model. The effects of high mixing entropy and fragility on the rejuvenation behavior were also considered. This work confirmed that DCT is an effective method for the rejuvenation and plasticization of TiZrHfBeCu HE-BMG.
机译：研究了深度低温循环处理（DCT）对Tizrhfbecu高熵散装金属玻璃（HE-BMG）的复兴和室温压缩性能的影响。 DCT之后，Tizrhfbecu He-BMG的完全无定形结构仍然存在，但放松的焓表现出明显的复兴行为。增加循环次数后，Tizrhfbecu He-BMG的室温可塑性从0.62％逐渐增加到5.38％，屈服强度没有明显变化。高熵非晶合金的硬度和密度随着DCT循环的数量而降低。基于剪切变换区（STZ）模型，解释了DCT引起的恢复和塑化机制。还考虑了高混合熵和脆弱性对复兴行为的影响。这项工作证实，DCT是针对Tizrhfbecu He-BMG的复兴和塑化的有效方法。

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  • 来源
    《Materials Science and Engineering》 |2020年第21期|140078.1-140078.7|共7页
  • 作者

    Pan Gong; Geng Yin; Zahra Jamili-Shirvan; Hongyu Ding; Xinyun Wang; Junsong Jin;

  • 作者单位

    State Key Laboratory of Materials Processing and Die & Mould Technology Huazhong University of Science and Technology No. 1037 Luoyu Road Wuhan 430074 Hubei China Research Institue of Huazhong University of Science and Technology in Shenzhen Shenzhen 518057 Guangdong China;

    State Key Laboratory of Materials Processing and Die & Mould Technology Huazhong University of Science and Technology No. 1037 Luoyu Road Wuhan 430074 Hubei China;

    Esfarayen University of Technology Esfarayen North Khorasan Iran;

    Marine Equipment and Technology Institute Jiangsu University of Science and Technology Zhenjiang 212003 Jiangsu China;

    State Key Laboratory of Materials Processing and Die & Mould Technology Huazhong University of Science and Technology No. 1037 Luoyu Road Wuhan 430074 Hubei China;

    State Key Laboratory of Materials Processing and Die & Mould Technology Huazhong University of Science and Technology No. 1037 Luoyu Road Wuhan 430074 Hubei China;

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  • 正文语种 eng
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  • 关键词

    Bulk metallic glasses; High-entropy alloys; Deep cryogenic cycling treatment; Rejuvenation; Mechanical properties;

    机译：散装金属眼镜;高熵合金;深冷冻循环处理;恢复活力;机械性能;

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