界面条件剧变的淬火过程三维温度场的计算机模拟  

Computer Simulation of Three Dimensional Temperature Field of Quenching Process with Suddenly Changed Surface Conditions

作　　者：胡明娟[1] 潘健生[1] 李兵[1] 田东[1] 

机构地区：[1]上海交通大学

出　　处：《金属热处理学报》1996年第A00期90-97,共8页

基　　金：国家自然科学基金

摘　　要：用有限单元法建立界面条件剧变的淬火过程三维瞬态温度场的计算机计算数学模型，并用Ｔ１０钢作为试验材料进行冷却曲线测试以验证数学模型。该模型较全面地考虑了淬火过程中界面换热系数剧烈变化及各种物性参数随温度而变化的非线性问题，包括了相变的计算及相变潜热与温度场变化的耦合计算。冷却曲线的计算结果与实测结果吻合较好，表明本数学模型和计算程序能正确预测复杂形状物体的非线性三维瞬态温度场变化。A mathematical model using the Finite Element Methods for computer calculation has been developed to simulate the three dimentional transienttemperature field of quenching process with suddenly changed surface conditions. Various cooling curves of T10 steel have been measured to validate the model. The model takes into account the nonlinear problern of physical property coefficients and the changes of surface convective heat transfer coefficient. It includes calculation of the microstructural transformation and coupling effects of latent heat and temperature fields. The calculaed results of cooling curves fit the measured results well, which indicates that the model and the program can correctly predict the 3-D nonlinear, transient temperature fields of work pieces with complex shape.

关 键 词：淬火 温度场 计算机模拟 有限元法 

分 类 号：TG156.3[金属学及工艺—热处理] TG155.92[金属学及工艺—金属学]