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| Investigations on Mechanisms of the Internalfriction Peak of Firstorder Phase Transformation in Solids |
| YANG Kaiwei1,SHUI Jiapeng2,ZHU Zhengang2 |
| (1. School of Physics and Technology, Central South University, Changsha 410083, China;2. Institute of Solid State Physics, Chinese Academy of Sciences, Heifei 230031, China) |
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Abstract Experimental study was carried on the crystallization of amorphous Pd43Ni10Cu27P20 ordereddisordered type phase transformation, nonproliferation of displacementtype phase transformation of shape memory alloy CuAlMn, and eutectoid phase transformation eutectoid ZnAl alloy. The simultaneous measurements of resistance and internal friction of three kinds of materials were designed and completed. And the frequency curve of internal friction at different temperatures was obtained by using interpolation. The results show that the internal frictiontemperature curve is not the relaxationtype internal friction peak, but the response to abrupt change of the relaxation parameters. The height of internal friction peak is related to the degree of relaxation. During low temperature range, structural relaxation is observed, and structural instability and structural relaxation can be used for qualitative interpretation of the influence of heating rate on the height of internal friction peak of phase transformation.
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Received: 03 May 2009
Published: 31 May 2010
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