高速形变过程中运动螺位错的声子产生与能量局域

PHONON GENERATION AND ENERGY LOCALIZATION BY MOVING SCREW DISLOCATIONS IN RAPID DEFORMATION

从量子力学观点出发,研究了运动螺位错产生的声子场。结果证明了位错运动产生点阵微扰,使得在滑移面附近产生声子,声子的能量局域在这些平面里,使这些区域的温度升高,而成为热点。最后,考查了声子能谱,发现它是非波尔兹曼分布。

From the viewpoint of quantum mechanics, the phonon field generated by a moving screw dislocation is examined.lt is shown that phonon emission is in the neighbourhood of active slip planes and phonon energy is locally concentrated in these planes where they form hot spots. Finally, the phonon energy spectrum is examined and found that it is non-Boltzmann.