| Zr_(52．5)Al_(10)Ni_(10)Cu_(15)Be_(12．5)大块金属玻璃的高温宏观硬度 |
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| 作者单位： | School of Materials Science and Engineering Shanghai University，School of Materials Science and Engineering，Shanghai University，School of Materials Science and Engineering，Shanghai University，Shanghai 200072，P.R.China，Shanghai 200072，P.R.China，Shanghai 200072，P.R.China |
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| 摘 要： | The hot hardness behavior of Zr_(52.5)Al_(10)Ni_(10)Cu_(15)Be_(12.5) bulk metallic glass is studied from ambient temperature to the temperature over T_x (the onset crystallization temperature) using a hot macro-hardness tester and scanning electron microscopy (SEM).The results show that the hot hardness behavior of Zr_(52.5)Al_(10)Ni_(10)Cu_(15)Be_(12.5) bulk metallic glass can be classified into 4 zones:the glassy zone in which the hardness almost linearly decreases with the increase of temperature,the viscoelastic zone in which the hardness is nearly unchanged,the viscous flow zone in which the hardness quickly tends towards near zero with temperature,and the crystallization zone in which the hardness sharply increases.The high temperature deformation behavior and the easy processable deformation region for bulk metallic glasses are also discussed on the basis of the hot marco-hardness.
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Hot macro-hardness of Zr_(52.5)Al_(10)Ni_(10)Cu_(15)Be_(12.5) bulk metallic glass |
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| LI Jun TIAN Rui XIAO Xue-shan School of Materials Science and Engineering,Shanghai University,Shanghai ,P.R.China. Hot macro-hardness of Zr_(52.5)Al_(10)Ni_(10)Cu_(15)Be_(12.5) bulk metallic glass[J]. Journal of Shanghai University(English Edition), 2007, 0(5) |
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| Authors: | LI Jun TIAN Rui XIAO Xue-shan School of Materials Science Engineering Shanghai University Shanghai P.R.China |
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| Affiliation: | LI Jun TIAN Rui XIAO Xue-shan School of Materials Science and Engineering,Shanghai University,Shanghai 200072,P.R.China |
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| Abstract: | The hot hardness behavior of Zr_(52.5)Al_(10)Ni_(10)Cu_(15)Be_(12.5) bulk metallic glass is studied from ambient temperature to the temperature over T_x (the onset crystallization temperature) using a hot macro-hardness tester and scanning electron microscopy (SEM).The results show that the hot hardness behavior of Zr_(52.5)Al_(10)Ni_(10)Cu_(15)Be_(12.5) bulk metallic glass can be classified into 4 zones:the glassy zone in which the hardness almost linearly decreases with the increase of temperature,the viscoelastic zone in which the hardness is nearly unchanged,the viscous flow zone in which the hardness quickly tends towards near zero with temperature,and the crystallization zone in which the hardness sharply increases.The high temperature deformation behavior and the easy processable deformation region for bulk metallic glasses are also discussed on the basis of the hot marco-hardness. |
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| Keywords: | hot hardness deformation bulk metallic glass. |
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