【摘要】 通过解变温扩散方程 ,导出了硼在非平衡晶界偏聚的理论公式 ,建立了晶界贫硼区宽度与淬火加热温度、冷却速度以及非平衡晶界偏聚扩散激活能与扩散常数之间的关系 ,理论预言与实验结果能较好地吻合 .更多还原

【Abstract】 By way of resolving nonisothermal diffusion equation, a theoretical formula for non equilibrium grain hboundary segregation has been dierived, and the relationship among width of boron depleted zone, quenching temperature,cooling rate,activation energy and diffusion constant of non equilibrium grain boundary segregation has been established.The theoretical prospects breed with experimental result satisfactorily.更多还原