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首页> 外文期刊>Materials Science and Engineering >Strain rate effects on the deformation behavior of (Zr_(55)Al_(10)Ni_5Cu_(30))_(99)Y_1 and Cu_(45)Zr_(47.5)Ag_(7.5) bulk metallic glasses
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Strain rate effects on the deformation behavior of (Zr_(55)Al_(10)Ni_5Cu_(30))_(99)Y_1 and Cu_(45)Zr_(47.5)Ag_(7.5) bulk metallic glasses

机译：应变速率对（Zr_（55）Al_（10）Ni_5Cu_（30））_（99）Y_1和Cu_（45）Zr_（47.5）Ag_（7.5）大块金属玻璃的变形行为的影响

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摘要

The strain rate effects on the deformation behavior of bulk-metallic glasses (BMGs) are investigated. The loading-unloading-reloading tests were performed with the same strain rates for the loading and reloading. The deformation for both (Zr_(55)Al_(10)Ni_5Cu_(30))_(99)Y_1 and Cu_(45)Zr_(47.5)Ag_(7.5) BMGs shows the strain softening at the low strain rate. However, at the high strain rate, the (Zr_(55)Al_(10)Ni_5Cu_(30))(99)Y_1, BMG exhibits more obvious strain softening while Cu_(45)Zr_(47.5) Ag_(7.5) BMG demonstrates the strain hardening instead. This could be rationalized by the free volume increase and the structural instability during plastic deformation process.
机译：研究了应变速率对块状金属玻璃（BMG）变形行为的影响。以相同的应变率进行装卸测试。 （Zr_（55）Al_（10）Ni_5Cu_（30））_（99）Y_1和Cu_（45）Zr_（47.5）Ag_（7.5）BMG的变形均显示出低应变速率下的应变软化。然而，在高应变速率下，（Zr_（55）Al_（10）Ni_5Cu_（30））（99）Y_1，BMG表现出更明显的应变软化，而Cu_（45）Zr_（47.5）Ag_（7.5）BMG表现出应变硬化代替。这可以通过塑性变形过程中的自由体积增加和结构不稳定性来合理化。

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  • 来源
    《Materials Science and Engineering》 |2009年第2期|69-73|共5页
  • 作者

    Dongchun Qiao; Lu Huang; Gongyao Wang; Peter K.Liaw;

  • 作者单位

    Department of Material Science and Engineering, The University of Tennessee, Knoxville, TN 37996, USA Washington State University, Applied Science Laboratory/Institute of Shock Physics, 120 N Pine Street, Spokane, WA 99210,USA;

    Department of Material Science and Engineering, The University of Tennessee, Knoxville, TN 37996, USA Key Laboratory of Aerospace Materials and Performance (Ministry of Education), School of Materials Science and Engineering, Beijing University of Aeronautics and Astronautics,Beijing 100191 China;

    Department of Material Science and Engineering, The University of Tennessee, Knoxville, TN 37996, USA;

    Department of Material Science and Engineering, The University of Tennessee, Knoxville, TN 37996, USA;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    metallic; class; compression; deformation; softening; hardening;

    机译：金属的类;压缩;形变;软化硬化;

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