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推导出了材料在高温和不能引起范性蠕变的弹性范围内张应力作用引起的溶质非平衡晶界偏聚的动力学方程 .模拟了Shinoda和Nakamura的磷在钢中和Misra的硫在钢中的张应力时效实验结果 ,获得了模拟结果与实验结果的一致 .通过模拟发现 ,张应力使磷 -空位复合体以及硫 -空位复合体在钢中的扩散系数均增加 3个数量级 ,使磷原子和硫原子的扩散系数分别降低 3个和 5个数量级 .
The kinetic equation for the segregation of solute non-equilibrium grain boundaries induced by tensile stress in the elastic range of high temperature and non-ductile creep was deduced. Phosphorus of Shinoda and Nakamura were simulated in steel and Misra sulfur in steel The simulation results agree well with the experimental results, and the results show that the tensile stress increases the diffusion coefficient of phosphorus-vacancy complex and sulfur-vacancy complex in steel by three orders of magnitude, Diffusion coefficients of atoms and sulfur atoms are reduced by 3 and 5 orders of magnitude, respectively.