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	灰铸铁凝固过程结晶潜热处理模型
	董怀宇 ; 杨杰 ; 熊守美 ; DONG Huai-yu ; YANG Jie ; XIONG Shou-mei
	2010-06-08 ; 2010-06-08
关键词	数值模拟 灰铸铁 凝固 结晶潜热处理 Numerical simulation gray cast iron solidification latent heat release model TG251
其他题名	Study on Numerical Simulation for Latent Heat Release in Gray Casting Irons
中文摘要	基于潜热处理的温度回升法,针对灰铸铁凝固过程中具有初晶和共晶两个阶段的凝固特性,提出了适合灰铸铁的带共晶的潜热处理方法。根据Fe-C-Si三元合金相图,采用杠杆定律来计算初晶和共晶的分配系数。将该方法应用于实际灰铸铁件的凝固模拟计算,并将计算结果与不区分初晶与共晶过程的潜热处理方法的计算结果相比较。该方法的计算结果更接近实际凝固情况。; Based on the temperature recovery method, a new model is presented to handle the latent heat release of gray cast iron during the solidification process of both primary solidification and the eutectic solidification stages. Proportion of the latent heat released during the primary and eutectic solidification stages is determined by the lever rule according to the Fe-C-Si phase diagram. This method is used in the numerical simulation of practical gray iron castings and the simulation results are compared with those calculated by conventional method without considering the difference of the primary and eutectic latent heat release. The comparison indicated that the new latent heat release model can improve the accuracy of the solidification simulation results.; 国家重点基础研究发展计划(G2000067208-3)资助。
语种	中文 ; 中文
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/48473]
专题	清华大学
推荐引用方式 GB/T 7714	董怀宇,杨杰,熊守美,等. 灰铸铁凝固过程结晶潜热处理模型[J],2010, 2010.
APA	董怀宇,杨杰,熊守美,DONG Huai-yu,YANG Jie,&XIONG Shou-mei.(2010).灰铸铁凝固过程结晶潜热处理模型..
MLA	董怀宇,et al."灰铸铁凝固过程结晶潜热处理模型".(2010).

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