| 铝合金大厚板淬火残余应力数值分析 |
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| 引用本文： | 许晓静,韦宝存,房士义,程晓农.铝合金大厚板淬火残余应力数值分析[J].江苏大学学报(自然科学版),2010,31(3). |
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| 作者姓名： | 许晓静 韦宝存 房士义 程晓农 |
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| 作者单位： | 江苏大学,先进成形技术研究所,江苏,镇江,212013 |
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| 基金项目： | 江苏省工业科技支撑计划项目(BE2008118);;江苏大学拔尖人才培养工程基金资助项目 |
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| 摘 要： | 基于淬火会引起铝合金大厚板很大的残余应力,并容易引起淬火变形与裂纹,恶化材料的性能,运用有限元分析软件ANSYS研究了铝合金板材尺寸、淬火介质温度对温度场、应力场和残余应力的影响.基于随温度变化的材料物性参数以及材料表面与淬火介质的换热系数,进行了淬火过程的非线性热传导分析.结果表明,随着板材厚度的增加,铝合金薄板的残余应力增加明显,而铝合金厚板的残余应力未产生太大变化;随着淬火介质温度的升高,厚板的残余应力也无明显降低;对于铝合金厚板,通过优化合金成分等措施来提高合金淬透性,才能有效降低残余内应力,并保证合金的力学性能.
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| 关 键 词： | 铝合金 淬火 残余应力 冷却速度 淬透性 |
Numerical analysis of residual stresses in quenching of aluminum alloy thick plates |
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| Xu Xiaojing,Wei Baocun,Fang Shiyi,Cheng Xiaonong.Numerical analysis of residual stresses in quenching of aluminum alloy thick plates[J].Journal of Jiangsu University:Natural Science Edition,2010,31(3). |
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| Authors: | Xu Xiaojing Wei Baocun Fang Shiyi Cheng Xiaonong |
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| Institution: | Advanced Forming Technology Institute/a>;Jiangsu University/a>;Zhenjiang/a>;Jiangsu 212013/a>;China |
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| Abstract: | Aluminum alloy thick plates have been widely used as the key material of aircraft structures.Quenching process is one of the most important methods for improving material performance,which introduces a high level of residual stresses and easily lead to distortion and quench cracks,resulting in the performance deterioration.In this paper,the effect of aluminum alloy dimensions and quenching medium temperatures on quenching residual stress was investigated using the finite element program ANSYS.A non-linear h... |
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| Keywords: | aluminum alloy quench residual stress cooling rate hardenability |
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