Effect of Fe particle on the surface peeling in Cu-Fe-P lead frame

Juanhua Su; Ping Liu; Qiming Dong; Hejun Li; Baohong Han

doi:10.1007/BF02840870

Effect of Fe particle on the surface peeling in Cu-Fe-P lead frame

Juanhua Su, Ping Liu, Qiming Dong, Hejun Li, Baohong Han

School of Materials Sience and Engineering

Research output: Contribution to journal › Article › peer-review

3 Scopus citations

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 the crack and peeling damage on finish rolling. The larger Fe particles in the Cu-Fe-P alloy should be avoided.

Original language	English
Pages (from-to)	18-20
Number of pages	3
Journal	Journal Wuhan University of Technology, Materials Science Edition
Volume	21
Issue number	3
DOIs	https://doi.org/10.1007/BF02840870
State	Published - Sep 2006

Keywords

Cu-Fe-P lead frame
Equivalent strain
Equivalent Stress
Surface peeling

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10.1007/BF02840870

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title = "Effect of Fe particle on the surface peeling in Cu-Fe-P lead frame",

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 the crack and peeling damage on finish rolling. The larger Fe particles in the Cu-Fe-P alloy should be avoided.",

keywords = "Cu-Fe-P lead frame, Equivalent strain, Equivalent Stress, Surface peeling",

author = "Juanhua Su and Ping Liu and Qiming Dong and Hejun Li and Baohong Han",

year = "2006",

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doi = "10.1007/BF02840870",

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journal = "Journal Wuhan University of Technology, Materials Science Edition",

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T1 - Effect of Fe particle on the surface peeling in Cu-Fe-P lead frame

AU - Su, Juanhua

AU - Liu, Ping

AU - Dong, Qiming

AU - Li, Hejun

AU - Han, Baohong

PY - 2006/9

Y1 - 2006/9

N2 - 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 the crack and peeling damage on finish rolling. The larger Fe particles in the Cu-Fe-P alloy should be avoided.

AB - 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 the crack and peeling damage on finish rolling. The larger Fe particles in the Cu-Fe-P alloy should be avoided.

KW - Cu-Fe-P lead frame

KW - Equivalent strain

KW - Equivalent Stress

KW - Surface peeling

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Effect of Fe particle on the surface peeling in Cu-Fe-P lead frame

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Keywords

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