CALCULATION OF COUPLED PROBLEM BETWEEN TEMPERATURE AND PHASE TRANSFORMATION DURING GAS QUENCHING IN HIGH PRESSURE  

作　　者：程赫明 王洪纲 谢建斌 

机构地区：[1]Department of Engineering Mechanics Kunming University of Science and Technology,Kunming 650093,P. R. China

出　　处：《Applied Mathematics and Mechanics(English Edition)》2006年第3期305-311,共7页应用数学和力学（英文版）

基　　金：Project supported by the National Natural Science Foundation of China (No.10162002) the Key Project of Ministry of Education of China (No.204138)

摘　　要：The gas quenching is a modern, effective processing technology. On the basis of nonlinear surface heat-transfer coefficient obtained by Cheng during the gas quenching, the coupled problem between temperature and phase transformation during gas quenching in high pressure was simulated by means of finite element method. In the numerical calculation, the thermal physical properties were treated as the functions of temperature and the volume fraction of phase constituents. In order to avoid effectual ＂oscillation＂ of the numerical solutions under smaller time step, the Norsette rational approximate method was used.The gas quenching is a modern, effective processing technology. On the basis of nonlinear surface heat-transfer coefficient obtained by Cheng during the gas quenching, the coupled problem between temperature and phase transformation during gas quenching in high pressure was simulated by means of finite element method. In the numerical calculation, the thermal physical properties were treated as the functions of temperature and the volume fraction of phase constituents. In order to avoid effectual ＂oscillation＂ of the numerical solutions under smaller time step, the Norsette rational approximate method was used.

关 键 词：gas queaching surface heat-transfer coefficient rational approximation TEMPERATURE phase transformation 

分 类 号：TG156.3[金属学及工艺—热处理] O551.3[金属学及工艺—金属学]