| 颗粒形状对铜合金薄带表层断裂影响的数值分析 |
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| 引用本文： | 苏娟华,董企铭,刘平,许莹莹.颗粒形状对铜合金薄带表层断裂影响的数值分析[J].材料热处理学报,2007,28(B08):359-362. |
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| 作者姓名： | 苏娟华 董企铭 刘平 许莹莹 |
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| 作者单位： | 河南科技大学材料学院,河南洛阳471003 |
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| 基金项目： | 河南科技大学博士科研启动基金资助项目 |
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| 摘 要： | 根据引线框架Cu—Fe-P合金精轧后表层断裂处形状各异Fe颗粒的组织几何形态，建立有限元数值分析模型，主要研究了不同Fe颗粒形状下残余应力对基体与界面处应力集中现象的影响。数值分析表明，随着颗粒尖角程度的增加，Fe颗粒和Cu基体界面处存在剧烈的应力集中和较大的残余应力，从而导致铜合金薄带表层断裂。因此在引线框架铜合金的生产过程中，应避免较大的尖角Fe颗粒存在。
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| 关 键 词： | 模拟分析 表层断裂 残余应力 颗粒形状 |
Numerical analysis on effect of Fe particle shapes on surface fracture of copper alloy sheet |
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| SU Juan-hua, DONG Qi-ming, LIU Ping, XU Ying-ying.Numerical analysis on effect of Fe particle shapes on surface fracture of copper alloy sheet[J].Transactions of Materials and Heat Treatment,2007,28(B08):359-362. |
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| Authors: | SU Juan-hua DONG Qi-ming LIU Ping XU Ying-ying |
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| Affiliation: | Material Science and Engineering College, Henan University of Science and Technology, Luoyang 471003, China |
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| Abstract: | The effect of Fe particle shapes on residual stress concentrated near the interface of Cu matrix and Fe particle in three models are researched. Finite element model is established based on microstructure of various Fe particle shapes in surface fractured Cu-Fe-P alloy sheet after finish rolling. The numerical result shows that, the equivalent stress and strain mismatch between the interface of Fe particles and Cu matrix is the main factor of surface fracture in the copper alloy lead frame sheet, especially with sharp Fe particles. |
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| Keywords: | simulation analysis surface fracture residual stress shape of Fe particle |
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