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首页> 外文期刊>Materials Science and Engineering. B, Solid-State Materials for Advanced Technology >Formation of a phase separating bulk metallic glass in Cu_(40)Zr_(40)Al_(10)Ag_(10) alloy
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Formation of a phase separating bulk metallic glass in Cu_(40)Zr_(40)Al_(10)Ag_(10) alloy

机译：Cu_（40）Zr_（40）Al_（10）Ag_（10）合金中相分离块状金属玻璃的形成

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摘要

The Cu_(40)Zr_(40)Al_(10)Ag_(10) glassy alloy prepared by different methods was investigated using X-ray diffraction, differential scanning calorimetry and transmission electron microscopy. The bulk sample prepared by copper mold casting exhibits the same XRD pattern and DSC scan as the ribbon sample prepared by melt spinning. TEM shows a homogenous and non-contrast pattern for the Cu_(40)Zr_(40)Al_(10)Ag_(10) ribbon sample. However, it was found that the bulk sample consisted of worm-like phases with a dark contrast homogeneously embedded in a matrix with a light contrast. The TEM and EDS results show that the dark and light contrast phases are completely amorphous, and the dark-contrast phase has high Ag and lower Cu contents, indicating the phase separation occurs in the as-cast Cu_(40)Zr_(40)Al_(10)Ag_(10) BMG.
机译：利用X射线衍射，差示扫描量热法和透射电子显微镜研究了用不同方法制备的Cu_（40）Zr_（40）Al_（10）Ag_（10）玻璃态合金。通过铜模铸造制备的块状样品表现出与通过熔融纺丝制备的带状样品相同的XRD图谱和DSC扫描。 TEM显示了Cu_（40）Zr_（40）Al_（10）Ag_（10）带状样品的均匀且无对比的图案。然而，发现该大块样品由蠕虫状相组成，其暗对比度均匀地嵌入具有光对比度的基质中。 TEM和EDS结果表明，暗和光的对比相是完全非晶态的，而暗对比的相具有较高的Ag和较低的Cu含量，表明在铸态Cu_（40）Zr_（40）Al_中发生了相分离。 （10）Ag_（10）BMG。

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