相变硬化激光热处理的数值解及组织性能的预测  

NUMERICAL SOLUTION AND PREDICTION OF MICROSTRUCTURES AND PROPERTIES FOR PHASE TRANSFORMATION HARDENING WITH LASER TREATMENT

作　　者：朱祖昌[1] 李培耀[1] 俞少罗[1] 

机构地区：[1]上海工程技术大学,工程技术大学测试中心

出　　处：《金属学报》1996年第1期105-112,共8页Acta Metallurgica Sinica

基　　金：国家自然科学基金

摘　　要：应用有限差分方法研制了相变硬化激光热处理非稳定温度场软件，揭示的激光处理全过程符合实际处理情况．应用热像仪测定了钢激光处理中表面温度场分布，应用热力学计算，确定了激光加热相变点ＡＣ１和ＡＣ３．The software of transient temperature field for phase transformation hardening with laser treatment by means of finite difference method was developed. The whole course revealed with this software is even better in keeping with the practical circumstance.The real surface temperature fields on the laser processing of steel have been measured with the thermovision. Using thermodynamic calculation Ac1 and Ac3, the critical points in laser heating, have been determined. The relationship of the hardness of carbon steel after laser processing, HRC or HV, vs carbon content, c. and the diffusion of carbon during the laser processing have been pointed out

关 键 词：激光加工 热处理 相变 数值模拟 温度测定 温度场 组织 

分 类 号：TG156.99[金属学及工艺—热处理]