| Zr基大块非晶的研究 |
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| 引用本文： | 边赞,何国,陈国良. Zr基大块非晶的研究[J]. 北京科技大学学报, 2000, 22(3): 219-222 |
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| 作者姓名： | 边赞 何国 陈国良 |
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| 作者单位： | 北京科技大学新金属材料国家重点实验室，北京 100083 |
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| 基金项目： | 国家高技术研究发展计划(863计划);863-715-005-0130; |
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| 摘 要： | 利用射流成型法制备出Ｚｒ５２．５Ｃｕ１４．６Ａ１１０Ｔｉ５大块非晶，该合金系统具有很强的玻璃形成能力和宽的过冷区，其玻璃转化温度Ｔｇ＝６５０．６３Ｋ，晶化温度Ｔｘ＝７２１．９０Ｋ，过冷区△Ｔｘ＝Ｔｘ－Ｔｇ＝７１．２７Ｋ，Ｖｉｃｋｅｒ硬度为５５８ｋｇ／ｍｍ＾２，压缩断裂强度１７３０ＧＰａ，弹性模量８２ＧＰａ，观察其断口有大量纹络状河流花样，并有融化的液滴存在，该合金系统大的玻璃形成能力应归功于合金组
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| 关 键 词： | 大块非晶 玻璃形成能力 过冷区 锆基合金 |
| 修稿时间： | 0199-10-07 |
Study of Zr52.5Cu17.9Ni14.6Al10Ti5 Bulk Amorphous Alloys |
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| BIAN Zan,HE Guo,CHENG Guoliang. Study of Zr52.5Cu17.9Ni14.6Al10Ti5 Bulk Amorphous Alloys[J]. Journal of University of Science and Technology Beijing, 2000, 22(3): 219-222 |
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| Authors: | BIAN Zan HE Guo CHENG Guoliang |
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| Abstract: | Zr52.5Cu17.9Ni14.6Al10Ti5 bulk amorphous alloy was prepared by a water-cooled copper mold. The alloy system has an excellent glass formation ability (GFA ) and a wide supercooled liquid region. The glass transition temperature (Tg), the crystallization temperature (Tx), the fracture stress, the plastic, Vickers hardness and elastic modulus for the bulk amorphous alloys with a diameter of 3 mm are 377.63℃，448.9℃, 1 730 MPa, 0.5%, 558 and 82 GPa, respectively. The bulk amorphous alloys have good mechanical properties. The excellent glass formation ability of Zr52.5Cu17.9Ni14.6Al10Ti5 alloys is presumably due to a combination of significantly different atomic size ratios above about 12%, multicomponent alloy system consisting of more than three elements and optimum negative heats of mixing among the constituent elements. |
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| Keywords: | bulk amorphous alloys glass formation ability liquid supercooling region mechanical properties |
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