| 数值仿真在金属热加工相变中的应用 |
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| 引用本文： | 胡建军,孙飞,邓书彬.数值仿真在金属热加工相变中的应用[J].机械工程师,2014(11):34-36. |
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| 作者姓名： | 胡建军 孙飞 邓书彬 |
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| 作者单位： | 1. 重庆理工大学材料科学与工程学院,重庆400054;模具技术重庆市高校市级重点实验室,重庆400054
2. 重庆理工大学材料科学与工程学院,重庆,400054 |
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| 基金项目： | 重庆市科委科技攻关计划项目 |
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| 摘 要： | 热处理能够改善材料的组织及性能分布,数值仿真能较好地指导和优化热处理工艺。构建了热加工相变的计算模型,阐述了热处理过程中温度、相变和应变间的关系和计算所需考虑因素。讨论了热处理计算过程中考虑了相变过程中的热传导方程、弹塑性本构方程、有扩散和无扩散的相体积分数方程及扩散模型。结合Deform软件,介绍了热处理中尺寸变形、淬火相变和晶粒长大演变在数值仿真方面的应用。
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| 关 键 词： | 数值仿真 热处理 相变 Derorm-HT |
Application of Numerical Simulation on Hot Working Phase Transition in Metal Heat Treatment |
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| HU Jianjun,SUN Fei,DENG Shubin.Application of Numerical Simulation on Hot Working Phase Transition in Metal Heat Treatment[J].Mechanical Engineer,2014(11):34-36. |
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| Authors: | HU Jianjun SUN Fei DENG Shubin |
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| Affiliation: | HU Jianjun,SUN Fei,DENG Shubin(1. College of Material science and Engineering,Chongqing University of technology,Chongqing 400054,China; 2. Mouhl Technology Chongqiug Munieipal Key Laboratory of Institutions of Higher Edueation,Chongqing 400054,China) |
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| Abstract: | Heat treatment could improve the distribution of material microstructures and mechanical properties,while numerical simulation can be used to guide and optimize the heat working process. The model was built to calculate heat treatment transformation,where relationship among temperature,phase transformation and deformation were expounded,while factors were considered for calculation. The formula of computation was discussed in heat treatment process,such as heat transfer considering phase transformation,elastic-plastic strain equation, volume fraction equation with diffusion or equation transformation and diffusion model. Combined with DEFORM software, the application in numerical simulation was introduced including heat treatment deformation,phase transformation and grain size evolution. |
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| Keywords: | numerical simulation heat treatment transformation DEFORM HT |
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