Transactions of Materials and Heat Treatment

Title：Analysis of surface defect on H68 copper alloy strip

Authors： LIU Xin YUAN Chao-long ZHONG Yue-xian(Key Laboratory for Advanced Materials Processing Technology of Ministry of Education Department of Mechanical Engineering Tsinghua University Beijing 100084 China)

Unit：

KeyWords： surface defect copper alloy strip zigzag crack propagation semi continuous casting hot rolling

ClassificationCode：TG339

year,vol(issue):pagenumber：2009,34(2):46-49

Abstract：

The topography of the surface defect,the phase and chemical composition,the microstructure,the grain and the impurity elements of hot rolled H68 copper alloy strip from semi continuous casting were analyzed.The results show that the causes of the surface defect on it are subcutaneous blowholes which are oxidized and can't be closed in the process of hot rolling and the cinder inclusion which causes the stress concentration.And microcracks can propagate zigzag or continuously.

Funds：

国家自然科学基金资助项目(041302219);; 先进成形制造教育部重点实验室研究基金资助项目

Reference：

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