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| 引线框架铜合金精轧薄板表面起皮剥落的数值分析 | |
| 引用本文： | 苏娟华,董企铭,刘平,李贺军,康布熙. 引线框架铜合金精轧薄板表面起皮剥落的数值分析[J]. 功能材料, 2005, 36(1): 40-43 |
| 作者姓名： | 苏娟华 董企铭 刘平 李贺军 康布熙 |
| 作者单位： | 1. 西北工业大学,材料学院,陕西,西安,710072;河南科技大学,材料学院,河南,洛阳,471003 2. 河南科技大学,材料学院,河南,洛阳,471003 3. 西北工业大学,材料学院,陕西,西安,710072 |
| 基金项目： | 国家高技术研究发展计划(863计划)资助项目(2002AA331112)，河南省重大科技攻关资助项目(122021300) |
| 摘 要： | 运用弹塑性有限元方法的平面应变分析模型，依据引线框架Cu-Fe-P合金精轧后表面起皮剥落处的显微组织特征，研究了Cu基体和Fe相颗粒界面附近的应力应变场分布。研究表明：铜基体与铁相的塑性行为及应力应变分布具有明显的不均匀性．界面区强烈的应力集中易造成界面开裂；精轧前Fe相周围的微裂纹在精轧变形时将进一步发展，直至发生引线框架扳材表面起皮剥落破坏。应避免热轧板坯中出现较大Fe颗粒。 |
| 关 键 词： | 数值分析 应力应变 Cu-Fe-P合金 精轧 皮剥落 |
| 文章编号： | 1001-9731(2005)01-0040-03 |
| 修稿时间： | 2004-02-13 |
Numerical analysis of surface flaking in finish rolled lead frame copper alloy |
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| SU Juan-hua. Numerical analysis of surface flaking in finish rolled lead frame copper alloy[J]. Journal of Functional Materials, 2005, 36(1): 40-43 | |
| Authors: | SU Juan-hua |
| Affiliation: | SU Juan-hua~ |
| Abstract: | Based on the characterization of microstructure at surface flaking in Cu-Fe-P lead frame copper alloy of finish rolling, the stress and strain distributions of the interface between Cu matrix and Fe particle was analyzed using plane strain model by elastoplastic finite element method. It was shown that the stress and strain distributions in the Cu matrix and Fe particle are of significant non-homogeneity. Intense stress concentration at the interface will brings about the crack between the two phases. At the same time the micro-crack around the Fe particle before finish rolling makes it easy to develop the crack on finish rolling. So the surface flaking of lead frame copper alloy brings about. The larger Fe particles at the hot rolled plate should be avoided. |
| Keywords: | numerical analysis stress and strain Cu-Fe-P alloy finish rolling surface flaking |
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