Thickness Reduction Effect in Obtaining Ultrafine-Grained Microstructure from Oxygen-Free Copper Using High-Ratio Differential Speed Rolling

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Abstract:

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.

Keywords: COPPER; HIGH STRENGTH; SEVERE PLASTIC DEFORMATION; ULTRA FINE GRAINS

Document Type: Research Article

DOI: http://dx.doi.org/10.1166/jnn.2011.3357

Publication date: February 1, 2011

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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