Research Article Open Access

New Paradigm on the Mechanical Properties of In Situ Formed by Al/TiB2 and Al/TiB2/Cu MMCs

Abstract

In the current study, in situ formed Al/TiB₂.6 wt.% and Al/6 wt% TiB₂/4 wt% Cu metal matrix were investigated. Composites were made using the stir casting method, and both composites were compared. The composite is synthesized by combining two precursor salts, Potassium hexa fluro titanate (KBF4) and Potassium tetrafluoroborate (K₂TiF₆), with stoichiometric compositions corresponding to 6% by weight of TiB₂ particles, with A356 aluminium melt at 820ºC, speed 300 rpm, and holding time 30 minutes. Following that, 4 wt.% Cu powder was added to the composite melt, which was then poured into the permanent mould. Mechanical properties tests such as tensile strength, hardness, and fracture toughness were carried out in accordance with ASTM guidelines. The mechanical properties of the in situ formed Al/6 wt% TiB₂/4 wt% Cu composite outperform those of the Al/6 wt% TiB₂ composite and base metal. Optical micrograph and XRD analysis both confirm the presence of TiB₂ and Cu particles.

C. Rajaravi, Amala Mithin Minther Singh A, Gobalakrishnan, Prakash E

To read the full article Download Full Article | Visit Full Article