Effect of Minor Alloying on Crystallization Behavior and Thermal Properties of Zr_（64.5）Ni_（15.5）Al_（11.5）Cu_（8.5） Bulk Amorphous Alloy
Minor alloying plays an important role in the synthesis and improvement of thermal stability of bulk metallic glasses（BMGs）.The present study was conducted to investigate the effect of minor additions of Y,Ti and Nb on the crystallization behavior and the thermal properties of Zr64.5Ni15.5Al11.5Cu8....
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| Veröffentlicht in: | 材料科学技术学报：英文版 2011, Vol.27 (6), p.534-538 |
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| creator | Muhammad Iqbal Javed Iqbal Akhter Haifeng Zhang Zhuangqi Hu |
| description | Minor alloying plays an important role in the synthesis and improvement of thermal stability of bulk metallic glasses（BMGs）.The present study was conducted to investigate the effect of minor additions of Y,Ti and Nb on the crystallization behavior and the thermal properties of Zr64.5Ni15.5Al11.5Cu8.5 alloy.Thermal parameters and the activation energies for crystallization were calculated for four（Zr0.645Ni0.155Al0.115-Cu0.085）100-xMx（M=Y,Ti and Nb,while x=0,2 at.） alloys.The present alloys have wide supercooled liquid region of ≥87 K.Maximum activation energy was found to be greater than 300 kJ/mol for the base alloy.Four crystalline phases were identified in the samples annealed at 823 K for 20 min.Reduced glass transition temperature（Trg） and other thermal parameters such as γ,δ and β were improved by Y and Ti addition.Nb addition resists crystallization below annealing temperature 713 K,however,its effect on thermal properties is not very promising. |
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| identifier | ISSN: 1005-0302 |
| ispartof | 材料科学技术学报：英文版, 2011, Vol.27 (6), p.534-538 |
| issn | 1005-0302 1941-1162 |
| language | eng |
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| source | Elsevier ScienceDirect Journals; Alma/SFX Local Collection |
| subjects | 大块非晶合金 热性能 热物性参数 热稳定性 玻璃化转变温度 结晶行为 过冷液相区 退火温度 |
| title | Effect of Minor Alloying on Crystallization Behavior and Thermal Properties of Zr_（64.5）Ni_（15.5）Al_（11.5）Cu_（8.5） Bulk Amorphous Alloy |
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