Investigation Of AA7075 MMC Reinforced By Al0.5cocragni Heap Through Stir Casting And Cryorolling

Abstract

Stir casting, and subsequent rolling (room temperature rolling (RTR) and cryorolling (CR))employs to create AA7075 MMCs reinforced with Al0.5CoCrAgNi high entropy alloy particles (HEAp). The microstructures and mechanical characteristics of AA7075HEAp MMCs examine in this research. Stir-cast AA7075HEAp MMCs have an enhancement in ultimate tensile strength compared to AA7075, with the addition of HEAp (6 wt%). The mechanical characteristics of the cryo-rolling AA7075HEAp metal matrix compositeswere superior to those of the RTR-obtained MMCs. At increasing rolling deformation and lower HEAp mass percent, the discrepancies in mechanical characteristics between the CR and RTR-obtained AA7075HEAp MMCs widened. Scanning and transmission electron microscopy after RTR revealed multiple cavities in AA7075HEAp metal matrix composites, which were not present in cryo-rolling metal matrix composites. Researchers concluded that cryogenic temperatures change metal matrix composites' microvoids and mechanical characteristics.