| Y元素添加对CuZrAl块体金属玻璃的结构和力学性能的影响(英文) |
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| 引用本文： | 许宏伟,杜宇雷,邓昱.Y元素添加对CuZrAl块体金属玻璃的结构和力学性能的影响(英文)[J].中国有色金属学会会刊,2012,22(4):842-846. |
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| 作者姓名： | 许宏伟 杜宇雷 邓昱 |
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| 作者单位： | 南京理工大学材料评价与设计教育部工程研究中心;江苏省(丹阳)高性能合金材料研究院;南京大学固态微结构国家重点实验室,现代分析中心 |
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| 基金项目： | Project (2010ZDJH10) supported by the NUST Research Funding;Project (BK2007213) supported by the Natural Science Foundation of Jiangsu Province,China |
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| 摘 要： | 研究添加Y元素对CuZrAl块体金属玻璃的结构和力学性能的影响。结果表明,添加Y元素提高CuZrAl体系的玻璃形成能力,而且由于添加Y元素可以降低该体系的结合能,从而降低其断裂强度。Cu45Zr48Al7块体金属玻璃的断裂表面主要呈脉状,而Cu46Zr42Al7Y5块体金属玻璃的断裂表面则很平滑。TEM观察表明,Cu45Zr48Al7的微观结构为非晶基体中含有纳米相,然而Cu46Zr42Al7Y5块体金属玻璃为全非晶结构。
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| 关 键 词： | 块体金属玻璃 Cu基合金 Y添加 |
| 收稿时间： | 9 September 2011 |
Effects of Y addition on structural and mechanical properties of CuZrAl bulk metallic glass |
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| XU Hong-wei,DU Yu-lei,DENG Yu.Effects of Y addition on structural and mechanical properties of CuZrAl bulk metallic glass[J].Transactions of Nonferrous Metals Society of China,2012,22(4):842-846. |
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| Authors: | XU Hong-wei DU Yu-lei DENG Yu |
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| Affiliation: | 1.Engineering Research Center of Materials Behavior and Design of Ministry of Education,School of Materials Science and Engineering,Nanjing University of Science and Technology,Nanjing 210094,China;2.Jiangsu Institute of Advanced Materials,Danyang 212300,China;3.National Laboratory of Solid State Microstructures,Center for Materials Analysis,Nanjing University,Nanjing 210093,China |
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| Abstract: | The effects of Y addition on the structural and mechanical properties of CuZrAl bulk metallic glass(BMG) were studied.The results show that the glass forming ability of CuZrAl system is improved by the addition of Y and the fracture strength decreases with Y addition due to the reduction of binding energy induced by Y.The fracture surface is dominated by vein-like patterns in Cu45Zr48Al7 bulk metallic glass,and changes to smooth regions in Cu46Zr42Al7Y5 BMG.TEM observation shows that Cu45Zr48Al7 BMG has a composite microstructure of nanocrystalline phases dispersed in amorphous matrix.However,the Cu46Zr42Al7Y5 BMG shows a fully amorphous structure. |
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| Keywords: | bulk metallic glass Cu-based alloy Y addition |
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