【摘要】 根据激光淬火过程的特点及复杂性，提出用有限元方法计算激光淬火过程中温度场及组织分布的传热学数学模型；在计算中对热物性值随温度的变化进行了分段线性回归处理；激光淬火属快速加热范畴，奥氏体化点相应提高．相变潜热则根据相变量的多少以温升、温降的形式加以处理．以ＭｏＣｕ球铁为例对不同激光处理参数下的温度场及组织分布进行了计算及实验验证．更多还原

【Abstract】 A two-dimension non-linear finite element model is presented to calculate thetransient temperature field in laser quenching process,the thermal properties of this material varywith temperature. The austenitizing temperatures in laser heating process are higher than thosein conventional heating process. The latent heat of phase transformation is considered.Thecalculated depth and width of the phase transformation zone agree well with the experimentvalues.更多还原