Microstructure and mechanical properties of Cu/RHA composites fabricated by friction stir processing

Abstract

Pure copper its composites reinforced with Rice Husk Ash (RHA) particles prepared by Friction Stir Processing (FSP) technique. Copper Matrix Surface Composites (CMSCs) is to enrich the metallurgical and mechanical properties. Pure copper used as matrix material and ceramics particles RHA used as reinforcement. CMSCs were fabricated a set of process parameters such as rotational speed 1000 rpm, transverse speed 40 mm/min and an axial force 10 kN with a single pass. CMSCs are presently characterized using Optical Microscope (OM), Field Emission Scanning Electron Microscopy (FESEM), Vickers hardness tester, and wear behavior conduct by pin-on-disk apparatus. High abrasive wear loss of pure copper because of its softness material. CMSCs of micrograph revealed the enhanced fine bonding in the stir zone (SZ) with a uniform dispersion of ceramic particles. The addition (0, 6, 12, 18 vol%) of RHA particles to copper prompts an expressive improvement in its hardness and wear resistance.