【摘要】 建立三维晶体中缺陷引起晶体熔化的统计理论，讨论了三维品体中的缺陷—位错对的形成与长大过程，通过对无相互作用位错对“成核－长大”过程的统计计算，得到了理论相变温度Ｔｃ，文中还从理论上证明了此相变为一级相交，并得到了相交潜热的计算公式，最后还对理论预言进行了实验验证。更多还原

【Abstract】 A statistiscal theory of melting mediated by defects in three-dimensions is devloped,the formation and growth of the defects-dislocation pairs are discussed. The phase transition temperature is obtained. through statistical computation The transition is proved to be the first-order phase transition, A formula to compute the talent heat is devised One of the theoretical predictions-the phase tansition temperature is verified by experment results of five alkali metals.更多还原