| Reconsideration of Anelastic Relaxation Peaks in Pure Aluminium |
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| 作者姓名： | 商丽燕 水嘉鹏 蔡彬 崔平 |
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| 作者单位： | Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 230031 |
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| 基金项目： | Supported by the National Natural Science Foundation of China Grant Nos 10171067 and 10374089, and the Foundation of the Institute of Solid State Physics, Chinese Academy of Sciences. |
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| 摘 要： | The temperature dependence of internal friction （ T- tan φ curves） in pure aluminium （Al） is measured at sixteen different frequencies. Based on T- tan φ curves, the frequency dependence of internal friction （f -tan φ curves） is also obtained by the interpolation method. An internal friction peak is observed in both the T - tan φ curves and the f - tan φ curves. The activation energy of the peak in the f - tan φ curves is found to be 2.08 ± 0.02 eV and compared to the value of 1.60 ± 0.04 eV in the T - tan φ curves. It is suggested that the change of relaxation strength with temperature should be considered when one calculates the activation energy of the peak in T- tan φ curves.
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| 关 键 词： | 纯铝 机械特性 耐磨性 弹性 |
| 收稿时间： | 2005-06-09 |
| 修稿时间： | 2005-06-09 |
Reconsideration of Anelastic Relaxation Peaks in Pure Aluminium |
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| Shang LiYan;Shui JiaPeng;Cai Bin;Cui Ping.Reconsideration of Anelastic Relaxation Peaks in Pure Aluminium[J].Chinese Physics Letters,2005,22(9):2338-2341. |
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| Authors: | Shang LiYan;Shui JiaPeng;Cai Bin;Cui Ping |
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