热处理专用有限元求解器的开发  

Development of a dedicated finite element solver for heat treatment

作　　者：陈震昊 徐骏[1] 王婧[1,2] 顾剑锋[1,3] Chen Zhenhao;Xu Jun;Wang Jing;Gu Jianfeng(Institute of Materials Modification and Modeling,Shanghai Jiao Tong University,Shanghai 200240,China;Shanghai Key Laboratory of Materials Laser Processing and Modification,Shanghai Jiao Tong University,Shanghai 200240,China;Materials Genome Initiative Center,Shanghai Jiao Tong University,Shanghai 200240,China)

机构地区：[1]上海交通大学材料改性与数值模拟研究所,上海200240 [2]上海交通大学上海市激光制造与材料改性重点实验室,上海200240 [3]上海交通大学材料基因组联合研究中心,上海200240

出　　处：《金属热处理》2021年第8期77-84,共8页Heat Treatment of Metals

基　　金：国家重点研发计划(2018YFB2001901)。

摘　　要：热处理专用有限元求解器是实现热处理工艺模拟计算的核心技术,国外商业软件公司长期占据领先地位。介绍了自主开发热处理专用有限元求解器MetalX的基本物理场数学模型、功能特点及其算法流程。应用该求解器进行了18CrNiMo7-6钢试样的渗碳过程模拟计算,并与主流商业有限元软件MSC.Marc的模拟结果进行了对比分析。结果表明:该求解器能够实现热-相变-扩散-结构四场耦合非线性分析,并能实现加热、渗碳、淬火全过程中零件温度、组织、碳浓度分布、变形与残余应力的预测,具有与主流商业有限元软件相近的计算精度。A dedicated finite element solver is the core technology for realizing simulation and computation for heat treatment process.Though foreign commercial software companies have been taking the lead in this area for a long time,a dedicated finite element solver MetalX for heat treatment is independently developed. After introducing its fundamental mathematical models for physical fields,features and calculation process,the MetalX solver was applied to simulate the carburization process of 18 CrNiMo7-6 steel and its result was compared with the result of a mainstream commercial finite element software MSC. Marc. The results indicate that the MetalX solver can realize fourfield coupled non-linear analysis of thermo-phase transformation-diffusion-structure,and is used to predict temperature,microstructure,carbon concentration,deformation and residual stress of the component during the whole process of heating,carburization and quenching,with similar calculation accuracy of the mainstream commercial finite element software.

关 键 词：热处理 有限元求解器 多场耦合 非线性分析 

分 类 号：TG156[金属学及工艺—热处理]