Fabrication and deformation studies on Al-Cu composite metallic materials

Abstract

<span style="font-size:11.0pt;mso-bidi-font-size: 10.0pt;font-family:" times="" new="" roman";mso-fareast-font-family:"times="" roman";="" mso-ansi-language:en-us;mso-fareast-language:en-us;mso-bidi-language:ar-sa"="" lang="EN-US">Al-Cu particulate composites (5-15 wt%) are prepared by stir cast method by dispersing copper powders (filings) in molten aluminium. Al-5Cu alloy is also fabricated under similar processing conditions with mutual solubility. Composites show well engulfed reinforcement (copper particles) in Al matrix where as alloy reveals a well defined fine dendritic structure. Deformation (cold upsetting) studies are carried out and behavior is recorded using PC based logging system. Failure of the billet before 50% deformation has been observed for higher concentration of reinforcement composites. Comparative studies are made with the alloy having similar composition.</span>