| 表面换热系数对铝厚板淬火温度和应力演变影响的数值模拟 |
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| 引用本文： | 姚灿阳,吴运新,袁望姣. 表面换热系数对铝厚板淬火温度和应力演变影响的数值模拟[J]. 铝加工, 2006, 0(6): 7-10 |
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| 作者姓名： | 姚灿阳 吴运新 袁望姣 |
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| 作者单位： | 中南大学机电工程学院,长沙,410083;中南大学机电工程学院,长沙,410083;中南大学机电工程学院,长沙,410083 |
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| 基金项目： | 国家重点基础研究发展规划（973项目）“高性能铝材与铝资源高效利用的基础研究”,课题编号;2005CB623708 |
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| 摘 要： | 淬火过程中表面换热系数是反映界面能量传递和介质冷却能力的重要物理参数。通过对铝厚板淬火的多组模拟实验，研究了表面换热系数对工件冷却速度、内应力演变的影响规律。结果表明，过大的表面换热系数并不能明显提高工件心部的冷却速度．却大大增加了工件的残余应力。铝厚板淬火工艺应用据工件的组织性能要求，合理选择的表面换热系数和冷却方式，尽量减小工件的残余应力。
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| 关 键 词： | 铝合金 淬火 换热系数 冷却速度 残余应力 |
| 文章编号： | 1005-4898（2006）06-0007-04 |
| 收稿时间： | 2006-09-21 |
| 修稿时间： | 2006-09-21 |
Digital Simulation on Effect of Surface Recuperating Factor on Quenching Temperature and Stress Evolution of Aluminum Plate |
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| YAO Can-yang,WU Yun-xin,YUAN Wang-jiao. Digital Simulation on Effect of Surface Recuperating Factor on Quenching Temperature and Stress Evolution of Aluminum Plate[J]. Aluminium Fabrication, 2006, 0(6): 7-10 |
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| Authors: | YAO Can-yang WU Yun-xin YUAN Wang-jiao |
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| Affiliation: | College of Mechanical and Electric Engineering, Central South University, Changsha 410083, China |
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| Abstract: | The effect of surface recuperating factor on cooling rate and internal stress evolution of the workpiece was researched by several simulation test for aluminum plate quenching. The result shows that excessive surface recuperating factor can't increase significantly cooling rate of workpiece,while increase greatly residual stress of workpiece. Quenching process of aluminum plate should be in accordance with structure property requirment of workpiece,select reasonably surface recuperating factor and cooling mode,reduce the residual stress of workpiece. |
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| Keywords: | aluminum alloy quenching recuperating factor cooling rate residual stress |
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