缺陷演化与相互作用效应

THE INTERACTING EFECTS BETWEEN DEFECTS IN THE PROCESS OF DEFECT EVOLUTION

缺陷演化过程是一个多层次体系的复杂过程，不同层次上的缺陷演化各有其独特的规律，但其共同点是流变与能量耗散．本文以缺陷演化过程中的共性流变与耗散现象为主线，在大量试验的基础上，对缺陷演化过程中缺陷的相互作用进行了探讨．研究结果表明：缺陷演化过程为缺陷间相互作用，相互制约，相互影响，并伴有热耗散的过程，相互作用的影响程度与其对位置有关．试验和统计分析表明，缺陷演化过程中由于热耗散而形成的局域温度场具有分形特性；进而根据试验数据计算了缺陷演化过程中缺陷局域温度场的分形维数，它是时间的函数.

Under the theoretical framework of rheology of bodies with defectes,the interaction,between defects in the process of defect evolution is disscussed by using thegeneral characters in peocess,taking rhology and dissipation as the chain. The research shoes that the process of defect evolution is a process of interaction, influence each other, condition each other betweendefects and accompanied by heat disspation,and the influence degree of interaction is related to the relative position of defects,Experirnents and statisical analysis indicata that dissipation near defects has fractal property,The fractal dimensionof the local temperature field near defects is calculated,it' sfunction of time.