【作者】 张立文； 裴继斌； 王富岗； 夏元良；

【Author】 Zhang Liwen, Pei Jibin, Wang Fugang, Xia Yuanliang(Material Engineering Department of Dalian University of Technology, Dalian 116023)

【机构】 大连理工大学材料工程系；

【摘要】 建立了激光热处理过程的二维和三维传热学模型。应用有限元和有限差分方法对激光热处理过程的温度场、组织场进行了数值模拟计算。预测了C22、C60、42CrMo等钢材激光热处理后的马氏体相变硬化区的宽度和深度。利用C02激光对C22、C60、42CrMo等钢材试样进行了激光热处理实验,实测了激光相变硬化区的宽度和深度。结果表明,激光热处理后马氏体相变硬化区宽度和深度的计算结果与实验结果符合较好。更多还原

【Abstract】 The 2-D and 3-D heat transfer model during laser heat treatment process has been set up. The temperature field and microstructure field during laser heat treatment process were calculated using Finite Element Method or Finite Difference Method. The widths and depths of laser transformation hardening zones of C22,C60,42CrMo steel were predicted. C22, 42CrMo, C60 steel samples were treated by CO2 laser, the widths and depths of laser transformation hardening zones of these samples were also measured experimentally. The calculated widths and depths of laser transformation hardening zones are in good agreement with the experimental results.更多还原