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双晶铝晶界弛豫的转变温度

TRANSFORMATION TEMPERATURE OF GRAIN BOUNDARY RELAXATION IN ALUMINIUM BICRYSTALS

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【作者】 段玉华葛庭燧张天宜

【Author】 DUAN YU-HUA GE TING-SUI (T. S. Ke) ZHANG TIAN-YILaboratory of Internal Friction and Defects in Solids, Institute of Solid Slate Physics, Acadcmia Sinica, Hcfei230031 Department of Physics, University of Science and Technology of China, Hefei 230026. Instutite of Metal Reserch, Academia Sinica, Shenyang 110015.

【机构】 中国科学技术大学物理系中国科学院固体物理研究所内耗与固体缺陷开放研究实验室中国科学院金属研究所 合肥 230026合肥 230031沈阳 110015

【摘要】 测量了夹角分别为60°和153.4°的[110]对称倾侧铝双晶晶界的扭转滞弹性蠕变曲线,指出了晶界的弛豫强度在低于温度T0时变为零,此温度(T0)约等于该金属的熔点温度(Tm)的二分之一,这说明晶界的内部结构在这个温度的附近发生了显著的变化。

【Abstract】 Anelastic creep curves of [110] symme rical tilt boundaries with mis-orientation angles 60°and 153.4°in aluminium bicrystals has been measured in torsion. It was found that the relaxation strength associated with the boundary becomes zero below a temperature To which has a value of about one half of the melting temperature Tm of bulk aluminium. This shows that a perceptible change of the internal structure of the grain boundary has taken place around this temperature.

  • 【文献出处】 物理学报 ,Acta Physica Sinica , 编辑部邮箱 ,1993年02期
  • 【被引频次】3
  • 【下载频次】35
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