Paper Title:
Effects of Grain Size on Micro Backward Extrusion of Copper
  Abstract

This study investigates the effects of grain size on the micro backward extrusion of copper cups. An equal channel angular extrusion (ECAE) technique was applied to refine the grain size in copper. Commercial available copper was annealed, deformed by six-pass ECAE at room temperature and then heat treated to obtain a microstructure with a grain size of about 4μm. Microstructure was examined and mechanical properties including hardness and stress-strain relationship were also investigated. The processed copper was then used in a micro backward extrusion of cups with the diameter of 3 mm and the wall thickness of 0.1 mm. The extruded cups were compared with those resulting from the coppers with larger grain size prepared by different heat treated processes. This study shows that the quality of the micro extruded cup increases as the grain size decreases. By using the refine-grained coppers for the micro backward extrusion, the cups with even rim height and uniform wall thickness can be easily produced.

  Info
Periodical
Advanced Materials Research (Volumes 83-86)
Edited by
M. S. J. Hashmi, B. S. Yilbas and S. Naher
Pages
1092-1098
DOI
10.4028/www.scientific.net/AMR.83-86.1092
Citation
C. C. Chang, T. C. Wang, "Effects of Grain Size on Micro Backward Extrusion of Copper", Advanced Materials Research, Vols. 83-86, pp. 1092-1098, 2010
Online since
December 2009
Export
Price
$35.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Tamara Kravchenko, Alexander Korshunov, Natalia Zhdanova, Lev Polyakov, Irina Kaganova
Abstract:Annealed oxygen-free and tough-pitch copper samples have been processed by equalchannel angular pressing (ECAP) by route BC. The samples...
960
Authors: Xin Tao Liu, Man Ping Liu, Qu Dong Wang, Wei Guo, Dong Di Yin
Abstract:Mg-3wt.%Y alloys were processed by cyclic extrusion and compression (CEC) up to 7 passes at different temperatures from 375 to 450 °C,...
767
Authors: Mahmood Fatemi Varzaneh, Jose María Cabrera, Abbas Zarei Hanzaki
Abstract:A new continuous severe plastic deformation (SPD) method called accumulative back extrusion (ABE) was employed to fabricate ultra-fine...
1033
Authors: Shao Feng Zeng, Kai Huai Yang, Wen Zhe Chen
Chapter 7: Transmission and Control of Fluid
Abstract:Equal channel angular pressing (ECAP) was applied to a commercial AZ61 magnesium alloy for up to 8 passes at temperatures as low as 473K....
2124