论文标题
热力学错位理论的缩放确认
Scaling Confirmation of the Thermodynamic Dislocation Theory
论文作者
论文摘要
我们表明，热力学错位理论（TDT）预测了应力，应变速率和温度之间的缩放关系，以构成晶体固体的稳态变形，并且通过铝和铜的广泛实验数据准确地遵守了这种关系。与传统的现象学脱位理论不同，TDT基于热力学的第二定律。它的成功表明，不能依靠基于非平衡过程的统计力学的固体变形的描述是可预测的。因此，迫切需要（也是一个新的机会）振兴材料物理学的这一核心部分。
We show that the thermodynamic dislocation theory (TDT) predicts a scaling relation between stresses, strain rates, and temperatures for steady-state deformations of crystalline solids, and that this relation is accurately obeyed by a wide range of experimental data for both aluminum and copper. Unlike conventional phenomenological dislocation theories, the TDT is based on the second law of thermodynamics. Its success implies that descriptions of solid deformation that are not based on the statistical mechanics of nonequilibrium processes cannot be relied upon to be predictive. Thus there is an urgent need -- and a new opportunity -- to revitalize this central part of materials physics.
