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,直至发生引线框架板材表面起皮剥落破坏.应避免热轧板坯中出现较大Fe颗粒.
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