Unusual room temperature ductility of a Zr-based bulk metallic glass containing nanoparticles
Unusual room temperature ductility of a Zr-based bulk metallic glass containing nanoparticles
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DOI：
10.1063/1.2746071
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发表时间：
2007-06
影响因子：
4
通讯作者：
J. Qiang;W. Zhang;G. Xie;A. Inoue
中科院分区：
文献类型：
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作者：
J. Qiang;W. Zhang;G. Xie;A. Inoue
通过铜模铸造获得了含有纳米级面心立方相的高延展性Zr65Al7.5Cu27.5块体金属玻璃（BMG）。室温压缩试验显示该合金具有优异的机械性能：屈服应力为1670MPa，杨氏模量为90GPa，弹性应变为2%，尤其是超过50%的显着塑性。边缘 BMG 是一个有用的模型系统，用于检查纳米晶体聚结模型和针对金属玻璃大规模塑性变形提出的剪切转变区模型。
Highly ductile Zr65Al7.5Cu27.5 bulk metallic glass (BMG) containing nanometer scaled fcc phase was obtained by copper mold casting. Room temperature compression tests revealed superior mechanical properties of the alloy: yielding stress of 1670MPa, Young’s modulus of 90GPa, elastic strain of 2%, and especially a remarkable plasticity of over 50%. The marginal BMG is a useful model system to examine the nanocrystal coalescence model and the shear-transformation-zone model proposed for large scale plastic deformations of metallic glasses.