脉冲激光导致不锈钢表层温度场演化的模拟  

Simulation of Temperature Field for Stainless Steel due to Pulsed Laser Treatment

作　　者：安中胜[1] 王会才[1] 赵亦兵[1] 洪友士[1] 

机构地区：[1]中国科学院力学研究所非线性力学国家重点实验室,北京100080

出　　处：《中国科学院研究生院学报》2003年第3期309-315,共7页Journal of the Graduate School of the Chinese Academy of Sciences

基　　金：国家自然科学基金(19891180);中国科学院资助项目

摘　　要：采用焓方法对Nd:YAG脉冲激光导致的不锈钢材料表面熔凝过程的温度场进行了数值模拟。在此基础上,结合材料的结晶动力学和快速凝固理论,对材料微结构演化的几个重要参数,包括凝固速率、冷却速度和界面温度梯度做了估算和讨论。Adopts the Enthalpy method to numerically simulate the temperature field of melting/solidification process in the surface layer of a stainless steel due to Nd:YAG pulsed laser treatment.With respect to the crystallization dynamics and rapid solidification theory, some essential parameters in relation to the microstructure evolution, such as solidification velocity, cooling speed and temperature gradient have been estimated and discussed.

关 键 词：激光快速熔凝 STEFAN问题 焓方法 温度场 微结构 不锈钢 

分 类 号：TG156.99[金属学及工艺—热处理]