Transactions of Materials and Heat Treatment

Title：Effects of rotational speed on microstructure and mechanical properties of copper strip during continuous extrusion

Authors： Chen Li Pei Jiuyang Liu Yuanwen Song Baoyun

Unit： Dalian Jiaotong University

KeyWords： copper flat wire continuous extrusion rotational speed recrystallization numerical simulation

ClassificationCode：

year,vol(issue):pagenumber：2014,39(4):54-58

Abstract：

The effects of rotational speed on the microstructure and mechanical properties of copper strip during continuous extrusion were studied using the combination of numerical simulation and engineering test. The temperature distributions of material and die under different rotational speeds during continuous extrusion of copper strip were analyzed by numerical simulation. The microstructure and mechanical properties of products under different speeds were achieved by the analysis of samples from engineering test. The results show that the temperatures of die open and blank in chamber increase with the increased rotational speed of extrusion wheel, and so does the percentage of recovery and recrystallization of grain，even grows up. While the tensile strength, hardness and elongation decrease with the increased rotational speed.

Funds：

国家“十二五”科技支撑计划（2011BAE23B01）；国家自然科学基金资助项目（511750）；辽宁省教育厅科学研究资助项目（L2012154）

陈莉(1978-),女，博士研究生，讲师

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