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铁道科学与工程学报

JOURNAL OF RAILWAY SCIENCE AND ENGINEERING

Vol. 17    No. 3    June 2007

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Deformed texture of copper processed by equal channel angular pressing via different angle routes
WU Bao-lin(武保林)1, HUANG Zhen-wei(黄震威)1,
ZHANG Yu-dong(张宇东)1, 2, BAO Lei(宝 磊)1 , C. ESLING2

1. Department of Materials Engineering, Shenyang Institute of Aeronautical Engineering, Shenyang 110034, China;
2. LETAM, CNRS-UMR 7078, University of Metz, Ile du Saulcy, 57045 Metz, France

Abstract:The commercially pure copper with dimension of 80 mm×20 mm×4 mm was used for equal channel angular pressing (ECAP), of which their outward appearance coordinate is corresponded with that of rolling deformation modes. Cold-deformed texture was investigated. The results show that the texture character in pure copper processed by ECAP is related with intersection angle (F) of the die channel. When F is 90˚ and the sample is extruded for one pass, its texture consists of α and b orientation lines including mainly C, B, S and Goss components, moreover a little rotated cube is found. When F is 135˚, as extrusion pass increases, the weak texture forms on the scope of deviation from rotated cube (y=0˚, θ=0˚, j=45˚±15˚) and develops to the y=45˚ fiber mainly including rotated cube. When F is 120˚, the texture is y=45˚ fiber mainly including rotated cube that is maintained constant as extrusion pass increases.

 

Key words: equal channel angular pressing; texture; deformation; multi-slip

ISSN 1672-7029
CN 43-1423/U

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