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| 7050铝合金喷水淬火表面换热系数的热模拟研究 | |
| 引用本文： | 熊创贤,邓运来,张劲,张新明.7050铝合金喷水淬火表面换热系数的热模拟研究[J].粉末冶金材料科学与工程,2010,15(5). |
| 作者姓名： | 熊创贤 邓运来 张劲 张新明 |
| 作者单位： | 1. 中南大学,材料科学与工程学院,长沙,410083;湖南城市学院,土木工程系,益阳,413000 2. 中南大学,材料科学与工程学院,长沙,410083;有色金属材料科学与工程教育部重点实验室,长沙,410012 3. 中南大学,材料科学与工程学院,长沙,410083 |
| 基金项目： | 国家重点基础研究发展规划(973计划)资助项目(2005CB623700) |
| 摘 要： | 针对7050铝合金末端的喷水淬火过程,建立喷水表面某时刻换热系数二维分布的3个模型:喷射面均匀分布模型(H-Model),喷射水柱区均匀分布模型(F-Model)和喷射表面非均匀分布模型(G-Model),通过ABAQUS有限元软件包的用户子程序接口实现换热系数二维分布条件下的温度场模拟。有限元模拟与实测的冷却曲线对比表明,H-Model的平均误差约9%,F-Model的平均误差约7%,预测值的平均误差约4%。由此证明运用一维传热模型测算的换热系数构建其二维非均匀分布的方法简便、可靠,能为研究铝合金材料喷水淬火冷却机理与工艺控制提供更加准确的温度场结果。 |
| 关 键 词： | 7050铝合金 喷水淬火 表面换热系数 二维热模拟 |
Thermal simulation on surface heat transfer coefficient during quench of 7050 Al alloy by water spraying |
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| XIONG Chuang-xian,DENG Yun-lai,ZHANG Jin,ZHANG Xin-ming.Thermal simulation on surface heat transfer coefficient during quench of 7050 Al alloy by water spraying[J].materials science and engineering of powder metallurgy,2010,15(5). | |
| Authors: | XIONG Chuang-xian DENG Yun-lai ZHANG Jin ZHANG Xin-ming |
| Affiliation: | XIONG Chuang-xian1,2,DENG Yun-lai1,3,ZHANG Jin1,ZHANG Xin-ming1,3 (1.School of Materials Science and Engineering,Central South University,Changsha 410083,China,2.Department of Civil Engineering,Hunan City Institute,Yiyang 413000,China 3.Key Laboratory of Nonferrous Materials Science and Engineering,Ministry of Education,Changsha 410012,China) |
| Abstract: | Three 2-D models of surface heat transfer coefficient during end-quench of 7050 Al alloy by water spraying were studied.These models are homogeneous distribution on the whole surface contacting water(H-Model),homogeneous distribution on the area directly sprayed by water(F-Model),and heterogeneous distribution on the whole water spraying surface(G-Model).Different temperature fields of three 2-D models have been simulated by subroutine interface of ABAQUS.The comparison of cooling curves of experimental res... |
| Keywords: | 7050Al alloy spray quenching surface heat transfer coefficient two-dimensional thermal simulation |
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