Numerical Simulation of Vacuum Heat Treatment Thermal Hysteresis Time of GH4169 Superalloy Workpiece
来源期刊：材料热处理学报2004年第5期
论文作者：ZHANG Fan-yun WANG Ming-wei LI Chen-hui ZHANG Li-wen ZHANG Zun-li ZHANG Li-sheng JIANG Guo-dong
关键词：vacuum heat treatment: thermal hyeteresis time; numerical simulation;
摘 要：A nonlinear finite element model of vacuum heat treatment process was developed. In this model, influence of many factors, such as nonlinear heat radiation, temperature-dependent thermal physical properties of material are considered. The temperature field of GH4169 alloy workpiece during vacuum heat treatment process was calculated using finite element software MSC.Marc, and the thermal hysteresis time of the workpiece was predicted. An experiment of vacuum heat treatment of GH4169 superalloy workpiece was carried out to verify the calculation. The experimental results of temperature profile agree well with the simulated results. This work lays a theoretical foundation for optimizing technical parameter of vacuum heat treatment process.
ZHANG Fan-yun1，WANG Ming-wei2，LI Chen-hui1，ZHANG Li-wen2，ZHANG Zun-li1，ZHANG Li-sheng1，JIANG Guo-dong2
(1.Shenyang LimingAero-EngineGroup Corporation, Shenyang, China;
2.Department of Material Engineering, Dalian University of Technology, Dalian , China)
摘要:A nonlinear finite element model of vacuum heat treatment process was developed. In this model, influence of many factors, such as nonlinear heat radiation, temperature-dependent thermal physical properties of material are considered. The temperature field of GH4169 alloy workpiece during vacuum heat treatment process was calculated using finite element software MSC.Marc, and the thermal hysteresis time of the workpiece was predicted. An experiment of vacuum heat treatment of GH4169 superalloy workpiece was carried out to verify the calculation. The experimental results of temperature profile agree well with the simulated results. This work lays a theoretical foundation for optimizing technical parameter of vacuum heat treatment process.
关键词:vacuum heat treatment: thermal hyeteresis time; numerical simulation;
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