Development and tribological property evaluations of hea reinforced copper surface composite

Abstract

The present-day research pacts in for fabrication of cu (copper) hea (high entropy alloy) surface metal matrix composite (mmc) through solid state friction stir process (fsp) performances. for being in sequence, metal powders that are sensibly selected and made ready for blending a newer form of reinforcing particles made known by the name hea, instituting as such alcocrcufe elements were all positioned exclusively in a graphite-based crucible conferring well to its atomic proportions; afterwards these essential constituents were then liquefied to the degree by means of an electric arc transitory system. higher degree of temperature range that s being caused from that of an electric arc, liquifies, powdered form of metals alcocrcufe and thus gets molded up as a multi-metal alloy known to be high entropy alloys (hea) upon solidification whose formation were further ensured through x-ray diffraction (xrd) analysis. besides locating many reasonable factors for cu hea surface mmcs to incorporate these alcocrcufe hea, higher hardness values vacillated up in the level of 770hv was the mainstay in selecting it as reinforcements.in fs processing schema, (i) as the rotating tool piece fabricated for this study using h13 tool steel material executes the foremost part, it was heat treated in the course so as to increase hv up to 60hrc, (ii) tools shoulder is of 20mm and#511; along with a straight yet cylindrical stirring pin measuring 6mm and#511; to 5mm length, (iii) a groove of length to depth (150mm x 5mm) dimensions subtending to varied width was machined on the cu plate specimen surface as per research flow accommodation to block iv up to 5, 10 or 15 vol% of alcocrcufe hea powder particles, and (iv) machining parameter customary of tool rotational speed and transverse speed were fixed at 1000 rpm and 30mm/min respectively for all of the cu hea surface mmcs sample development. macro and microstructural analysis of cu hea surface mmcs attained exposes for non appearance of defects and imperfections; such for examples include