Effect of Process Parameters on the Tensile Strength of the Developed Composite of Al 6065 in Stir Casting Process

There are numerous techniques of producing metal matrix composites (MMC) like infiltration, stir casting process, sinter-forging, diffusion bonding etc. Stir casting process is amongst the most known technique to synthesize MMC. In current study an agro-based MMC is prepared by stir casting process using waste eggshell and rice husk as primary and secondary reinforcements and Al 6065 as base material. Process parameters (PP) have a major impact on tensile strength of finally prepared composite. The major factors also called as process parameters in stir casting process that is having a determining impact in tensile strength of hybrid MMC are temperature as well as speed of stirring, duration of stirring and temperature at which the reinforcement is allowed to be poured. The primary aim behind the current work is to evaluate the optimal values of process parameters in friction stir casting process. 9 separate samples have been prepared at different PP for analyzing tensile strength of composite and these samples were machined as per the ASTM standards for performing the test of tensile strength. It was concluded that maximum tensile strength value was found at a stirring speed of 320 rpm, optimal stirring temperature was 630degree celsius and the time of stirring was 25 minutes. At these values of PP, the tensile strength of prepared composite was improved by 35% in contrast to that of the base material.