强瞬态非傅立叶导热效应判据与激光冲击硬化应用的探讨  

Discussion on the Transient of Non-Fourier Heat Conduction Law and Laser Heat Treatment

作　　者：余宁[1] 胡明娟[1] 潘健生[1] 顾剑锋 

机构地区：[1]上海交通大学国家教育部高温材料及高温测试开放实验室,上海200030 [2]Troyes University

出　　处：《材料热处理学报》2001年第3期28-32,共5页Transactions of Materials and Heat Treatment

基　　金：国家自然科学基金项目 ( 5 990 1 0 0 8)

摘　　要：为了更好地反映激光冲击硬化的强瞬态特征及建立非傅立叶导热效应作用范围的判据 ,本文讨论了通用傅立叶导热定律的数学模型 ,推导了半无限大物体在第一类边界条件下基于非傅立叶导热定律的双曲线型偏微分方程的解析解。通过分析非傅立叶导热定律在瞬态条件下温度分布的变化过程 ,提出了非傅立叶导热效应的强瞬态判据。并就强瞬态导热现象对激光热处理的影响进行了讨论。指出按照非傅立叶导热定律计算能更好反映激光作用的热冲击特征。The mathematical model of universal Fourier heat conduction law has been discussed in this paper,which is based on the hyperbolic heat conduction equation of non\|Fourier heat conduction law,and an analytical solution of a semi\|infinite body has been derived under the first boundary condition.By analyzing the evolution of temperature distribution,the transient criterion and the applicable scope of non\|Fourier heat conduction law has been proposed and the effect on the laser heat treatment induced by the transient non\|Fourier heat conduction have been discussed.It is pointed out that the schock character of laser heat is defined well with the non\|Fourier heat conduction law in the paper.

关 键 词：非傅立叶导热效应 强瞬态判据 激光冲击硬化 

分 类 号：TG156.99[金属学及工艺—热处理]