Characterization and strengthening mechanism of CNT/TiB₂ particulates added AZ91D composites

Abstract In the current work, magnesium (AZ91D) matrix composites reinforced with different weight fractions (5, 10, and 15%) of titanium diboride (TiB 2 ) 1.5 wt% carbon nanotubes (CNTs) are fabricated using stir casting. The improvements in mechanical, wear corrosion resistance properties evaluated as per ASTM guidelines. synergistic strengthening effect TiB CNT is also studied. It was discovered that AZ91D/(1.5CNT-10TiB composite outperformed other terms strength ductility. Experimental characterization quantity analysis revealed load transfer process CNT, thermal mismatch, grain refinement primary factors leading to composite’s increased tensile strength. Porosity tends increase due variance expansion coefficient particles material; Orowan mechanism plays a prominent role enhancing Because influence strengthening, microparticles proportion transmission mechanisms, mismatch facilitated homogenous distribution CNTs. Wear inclusion CNTs content. An abrasive-type seen SEM image, craters all images. Adding significantly improves cast composites’ because refinement. Higher addition influences higher pitting poor