| Compression Behaviour and Equation of State of Zr44.4Nb7Cu13.5Ni10.9Be24.3 Bulk Metallic Glass up to 39 GPa |
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| 作者姓名： | 李工 战再吉 王利民 孙力玲 刘景 王文魁 |
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| 作者单位： | [1]CollegeofMaterialSciencesandChemicalEngineering,YanshanUniversity,Qinhuangdao066004 [2]InstituteofPhysics,ChineseAcademyofSciences,Beijing100080 [3]BSRF,InstituteofHighEnergyPhysics,ChineseAcademyofSciences,Beijing100039 |
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| 摘 要： | The compression of Zr44.4Nb7Cu13.5Ni10.8Be24.3 bulk metallic glass (BMG) is investigated at room temperature up to 39 GPa using in situ high-pressure energy dispersive x-ray diffraction with a synchrotron radiation source. The equation of state of the BMG is obtained by the calculation of the radial distribution function. Pressureinduced structural relaxation is exhibited. It is found that below about 6 GPa, the existence of excess free volume contributes to the rapid structural relaxation, which gives rise to rapid volumetric change, and the structural relaxation results in structural stiffness under higher pressure.
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| 关 键 词： | 高压物理 压缩行为 锆铌铜镍铍金属玻璃 多元合金材料 X射线衍射分析 |
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