Effect of Fe Particle on the Surface Peeling in Cu-Fe-P Lead Frame

作     者：苏娟华 SU Juanhua~ 1,2 LIU Ping~1 DONG Qiming~1 LI Hejun~2 TIAN Baohong~1 (1.College of Materials Science and Engineering, Henan University of Science and Technology, Luoyang 471003,China;2.College of Materials Science and Engineering, Northwestern Polytechnical University, Xi’an 710072, China)

作者机构：College of Materials Science and EngineeringHenan University of Science and Technology Luoyang 471003ChinaCollege of Materials Science and Engineering Northwestern Polytechnical University Xi'an 710072China 

出 版 物：《Journal of Wuhan University of Technology(Materials Science)》 (武汉理工大学学报（材料科学英文版）)

年 卷 期：2006年第21卷第3期

页      面：18-20页

核心收录：

学科分类：08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：Funded by the National "863" Plan of China ( No.2002AA331112)  the Doctorate Foundation of Northwestern Poly-technical University andthe Science Research Foundation of HenanUniversity of Science and Technology(No.2006ZY041) 

主　　题：Cu-Fe-P lead frame surface peeling equivalent Stress equivalent strain 

摘      要：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-dinension plane strain model and elastic plastic finite element method, the cause for peeling damage of Cu-Fe-P lead frame aUoy was investigated. The results show that when the content of Fe particles is more than 30% at local Fe-rich area the intense stress coacentration 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 intefrace 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.