Influence of Severe Plastic Deformation Induced by HE and ECAP on the Thermo-Physical Properties of Metals

Abstract:

The study is aimed at comparing the changes which occur in the microstructure and thermo-physical properties of pure copper (99.9%) and when copper alloyed with chromium and zirconium subjected to severe plastic deformation (SPD). The plastic deformation techniques employed were hydrostatic extrusion (HE), equal channel angular pressing (ECAP), and a combination of these two processes. The materials thus obtained had an ultra-fine-grained structure with the thermo-physical properties differing from those of the untreated materials. It appeared that there is a correlation between the deformation method employed and the thermo-physical properties of the materials, such as diffusivity and specific heat.

• Periodical: Key Engineering Materials (Volume 641)
• Pages: 278-285
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.641.278
• Online since: April 2015
• Authors: Jacek Skiba*, Adam Dominiak, Tomasz S. Wiśniewski, Wacek Pachla, Mariusz Kulczyk, Sylwia Przybysz
• Keywords: Diffusivity, Equal Channel Angular Pressing, Hydrostatic Extrusion, Specific Heat, Thermal Conductivity, Thermo-Physical Properties

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