Abstract
Under the surface peeling of Cu−Fe−P lead frame alloy larger Fe particles were observed by energy dispersive spectroscopy. By using the large strain two-dimension plane strain model and elastic-plastic finite element method, the cause for peeling damage of Cu−Fe−P lead frame alloy was investigated. The results show that when the content of Fe particles is more than 30% at local Fe-rich area the intense stress concentration in the Fe particle would make the Fe particle broken up. The high equivalent stress mutation and the mismatch of equivalent strain 10% at the two sides of interface make it easy to develop to crack and peeling damage on finish rolling. The larger Fe particles in the Cu−Fe−P alloy should be avoided.
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Schedule a callMore From: Journal of Wuhan University of Technology-Mater. Sci. Ed.
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