金属有序化合物的超晶格相变增韧

Toughening of intermetallic compounds induced by superlattice phase transition

文中研究了元素取代对金属有序化合物发生有序—无序相变的相变温度影响。讨论了相变温度与长程有序度以及晶界界面能之间的关系,从而确立了金属有序化合物的超晶格相变增韧机制。为金属有序化合物的改性和应用提供了理论基础。

The effect of the substitution of clements on the critical temperature of intermetallic compounds is studied. The relation among the temperature of phase transition, the long-range-orderness, and the interface energy is discussed. Furthermore, the mechanism of the toughening of intermetallic compounds is proved to be superlattice phase transition. This achievement has laid a theoretical foundation for the ductilizing and application of intermetallic compounds.