| Effects of quenching conditions on crystallization behavior of amorphous Al90Ni5Ce5 alloys |
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| 引用本文： | 赵芳,吴佑实,石元昌,周国荣,徐爱华. Effects of quenching conditions on crystallization behavior of amorphous Al90Ni5Ce5 alloys[J]. 中国有色金属学会会刊, 2003, 13(1): 88-91 |
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| 作者姓名： | 赵芳 吴佑实 石元昌 周国荣 徐爱华 |
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| 作者单位： | CollegeofMaterialsScienceandEngineering,ShandongUniversity,Jinan250061,China |
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| 基金项目： | Project(Y2 0 0 0b0 2 )supportedbytheNaturalScienceFoundationofShandongProvince,China |
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| 摘 要： | X-ray diffraction and DSC were used to investigate the crystallization behavior of amorphous Al90Ni5Ce5 alloys at different quenching temperatures.All the amorphous Al90Ni5Ce5 alloys quenched at different temperatures crystallize by two stages.The first stage corresponds to FCC Al phase precipitating from the amorphous matrix.The crystallization onset temperature increases with increasing quenching temperature.The quenching temperature also influences the isothermal behaviors.At low quenching temperatures,the FCC Al precipitation is only through grain growth.At high quenching temperatures,the FCC Al precipitation is through growth of quenched-in Al unclei and nucleation and growth of new crystallites.The reason that the crystallization onset temperature varies with quenching temperature is likely as that the quenched-in Al nuclei decreases with increasing temperature.
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| 关 键 词： | 非晶态合金 淬火 结晶 铝镍铈合金 |
Effects of quenching conditions on crystallization behavior of amorphous Al90 Ni5 Ce5 alloys |
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| ZHAO Fang,WU You-shi,SHI Yuan-chang,ZHOU Guo-rong,XU Ai-hua. Effects of quenching conditions on crystallization behavior of amorphous Al90 Ni5 Ce5 alloys[J]. Transactions of Nonferrous Metals Society of China, 2003, 13(1): 88-91 |
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| Authors: | ZHAO Fang WU You-shi SHI Yuan-chang ZHOU Guo-rong XU Ai-hua |
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| Abstract: | X-ray diffraction and DSC were used to investigate the crystallization behavior of amorphous Al 90Ni 5Ce 5 alloys at different quenching temperatures. All the amorphous Al 90Ni 5Ce 5 alloys quenched at different temperatures crystallize by two stages. The first stage corresponds to FCC Al phase precipitating from the amorphous matrix. The crystallization onset temperature increases with increasing quenching temperature. The quenching temperature also influences the isothermal behaviors. At low quenching temperatures, the FCC Al precipitation is only through grain growth. At high quenching temperatures, the FCC Al precipitation is through growth of quenched-in Al nuclei and nucleation and growth of new crystallites. The reason that the crystallization onset temperature varies with quenching temperature is likely as that the quenched-in Al nuclei decreases with increasing temperature. |
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| Keywords: | amorphous alloy quenching condition crystallization |
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