Thickness Reduction Effect in Obtaining Ultrafine-Grained Microstructure from Oxygen-Free Copper Using High-Ratio Differential Speed Rolling
This study has demonstrated a novel method of fabricating ultrafine-grained oxygen free copper sheets by applying high-ratio differential speed rolling (HRDSR) at room temperature that induces severe plastic deformation. Temperature rise of the sample due to friction and plastic deformation during deformation by HRDSR was significant such that beyond a thickness reduction >65%, the grain refining efficiency was reduced. The proposed processing method holds great potential for continuous production of ultrafine-grained copper alloy sheets.
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Document Type: Research Article
Publication date: 2011-02-01
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