| Formation and mechanical properties of bulk Cu-Ti-Zr-Ni metallic glasses with high glass forming ability |
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| 引用本文： | 杨英俊 康福伟 邢大伟 孙剑飞 沈庆克 沈军. Formation and mechanical properties of bulk Cu-Ti-Zr-Ni metallic glasses with high glass forming ability[J]. 中国有色金属学会会刊, 2007, 17(1): 16-20. DOI: 10.1016/S1003-6326(07)60041-7 |
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| 作者姓名： | 杨英俊 康福伟 邢大伟 孙剑飞 沈庆克 沈军 |
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| 作者单位： | School of Materials Science and Engineering Harbin Institute of Technology，School of Materials Science and Engineering Harbin Institute of Technology，School of Materials Science and Engineering Harbin Institute of Technology，School of Materials Science and Engineering Harbin Institute of Technology，Department of Mechanical Engineering Aviation University of Air Force，School of Materials Science and Engineering Harbin Institute of Technology，Harbin 150001 China Department of Mechanical Engineering Aviation University of Air Force Changchun 130022 China，Harbin 150001 China，Harbin 150001 China，Harbin 150001 China，Changchun 130022 China，Harbin 150001 China |
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| 摘 要： | Bulk amorphous Cu52.5Ti30Zr11.5Ni6 and Cu53.1Ti31.4Zr9.5Ni6 alloys with a high glass forming ability can be quenched into single amorphous rods with a diameter of 5 mm, and exhibit a high fracture strength of 2 212 MPa and 2 184 MPa under compressive condition, respectively. The stress—strain curves show nearly 2% elastic strain limit, yet display no appreciable macroscopic plastic deformation prior to the catastrophic fracture due to highly localized shear bands. The present work shows clearly evidence of molten droplets besides well-developed vein patterns typical of bulk metallic glasses on the fracture surface, suggesting that localized melting induced by adiabatic heating may occur during the final failure event.
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| 关 键 词： | 金属玻璃 成形能力 机械性能 绝热升温 合金 |
| 收稿时间： | 2006-07-28 |
| 修稿时间： | 2006-10-20 |
Formation and mechanical properties of bulk Cu-Ti-Zr-Ni metallic glasses with high glass forming ability |
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| YANG Ying-jun,KANG Fu-wei,XING Da-wei,SUN Jian-fei,SHEN Qing-ke,SHEN Jun. Formation and mechanical properties of bulk Cu-Ti-Zr-Ni metallic glasses with high glass forming ability[J]. Transactions of Nonferrous Metals Society of China, 2007, 17(1): 16-20. DOI: 10.1016/S1003-6326(07)60041-7 |
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| Authors: | YANG Ying-jun KANG Fu-wei XING Da-wei SUN Jian-fei SHEN Qing-ke SHEN Jun |
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| Affiliation: | 1. School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China;2. Department of Mechanical Engineering, Aviation University of Air Force, Changchun 130022, China |
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| Abstract: | Bulk amorphous Cu52.5Ti30Zrl1.5Ni6 and Cu53.1Ti31.4Zr9.5Ni6 alloys with a high glass forming ability can be quenched into single amorphous rods with a diameter of 5 mm, and exhibit a high fracture strength of 2 212 MPa and 2 184 MPa under compressive condition, respectively. The stress-strain curves show nearly 2% elastic strain limit, yet display no appreciable macroscopic plastic deformation prior to the catastrophic fracture due to highly localized shear bands. The present work shows clearly evidence of molten droplets besides well-developed vein patterns typical of bulk metallic glasses on the fracture surface, suggesting that localized melting induced by adiabatic heating may occur during the final failure event. |
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| Keywords: | bulk metallic glass glass forming ability mechanical property adiabatic heating |
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