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Shear band-mediated fatigue cracking mechanism of metallic glass at high stress level

机译：高应力水平下剪切带介导的金属玻璃疲劳开裂机理

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摘要

The evolution processes from shear banding to fatigue cracking and fracture in Zr_(52.5)Cu_(17.9)Ni_(14.6)Al_(10)Ti_5 metallic glass were directly investigated by quasi-in situ cyclic compression-compression experiment The results confirm that at high stress level fatigue crack initiated from and propagated along shear band. The cracking evolution on sample surface matches well with the different regions on the fatigue fracture surface. Furthermore, the formation of shear band and fatigue crack seems to be easier under cyclic loading than that under monotonic compression.
机译：通过准原位循环压缩-压缩实验直接研究了Zr_（52.5）Cu_（17.9）Ni_（14.6）Al_（10）Ti_5金属玻璃从剪切带到疲劳开裂和断裂的演变过程。应力水平是由剪切带产生并沿剪切带传播的疲劳裂纹。样品表面的裂纹发展与疲劳断裂表面的不同区域匹配得很好。此外，与单调压缩相比，循环载荷下剪切带和疲劳裂纹的形成似乎更容易。

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  • 来源
    《Materials Science and Engineering》 |2015年第11期|336-339|共4页
  • 作者

    X.D. Wang; R.T. Qu; Z.Q; Liu; Z.F. Zhang;

  • 作者单位

    Shenyang National Laboratory for Materials Science, Institute of Metal Research Chinese Academy of Sciences, 72 Wenhua Road, Shenyang 110016, PR China;

    Shenyang National Laboratory for Materials Science, Institute of Metal Research Chinese Academy of Sciences, 72 Wenhua Road, Shenyang 110016, PR China;

    Shenyang National Laboratory for Materials Science, Institute of Metal Research Chinese Academy of Sciences, 72 Wenhua Road, Shenyang 110016, PR China;

    Shenyang National Laboratory for Materials Science, Institute of Metal Research Chinese Academy of Sciences, 72 Wenhua Road, Shenyang 110016, PR China;

    Shenyang National Laboratory for Materials Science, Institute of Metal Research Chinese Academy of Sciences, 72 Wenhua Road, Shenyang 110016, PR China;

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

    Metallic glass; Fatigue crack; Shear band; Fracture surface;

    机译：金属玻璃;疲劳裂纹剪切带;断裂面;

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