Mechanical behaviour of stir cast TiO₂/Redmud/Al6061 metal matrix composites

Abstract

The present work deals with mechanical characterization of titanium oxide (TiO2)/Redmud/Aluminium alloy 6061 (Al6061) hybrid metal matrix composites (HMMC’s) processed using stir casting method. The weight fractions of TiO2 are varied (2%,4% and 6 %) and amount of redmud is kept constant (2%) in Al6061. The optimised parameters for stir casting are employed for fabrication the samples of all the configurations and cut according to ASTM standards. The presence of the elements of the constituents is confirmed by XRD and EDS. Effect of TiO2 and redmud content on Tensile, Compression and Hardness are studied in detail. The results reveal that the tensile, compressive and hardness of the prepared composites enhance with TiO2 content. The yield and ultimate strength increase in the range of 29.77%-72.36% and 29.96%-63.90% respectively than the Al6061. The compressive strength enhanced in the range of 9.28%-33.20% than the Al6061. Enhancement of hardness in the range of 9.41%- 41.17% is observed as compared to Al6061. The fractography studies confirm uniform mixing of the constituents and load transfer mechanism.

Advancing Aluminum-Based Composite *Manufacturing: Leveraging TiO2 Reinforcement through Stir Casting Technique

“…The achievement of uniform distribution depicted in Figure 2 holds significant implications for the mechanical, thermal, and optical properties of the composite. Enhanced dispersion leads to improved mechanical strength, wear resistance, and thermal stability, making the composite suitable for a wide range of applications in industries such as aerospace, automotive, and electronics [53]. Overall, Figure 2 highlights the successful fabrication of TiO2-reinforced aluminum composites with uniform particle distribution, paving the way for advanced material design and engineering.…”

Response surface modeling and optimization of LM25 alloy-based hybrid composites reinforced with red mud and sillimanite particles

“…Results show improvement in the specific wear rate along with hardness and tensile strength. Hugar et al 13 fabricated the Al6061/redmud/TiO 2 hybrid aluminum metal matrix composite using stir casting method. The weight percentage of TiO 2 is taken 2, 4, and 6 while the redmud weight percent is kept constant at 2%.…”

Mechanical and thermal behaviour of stir cast sillimanite/red mud/LM25 Al‐alloy metal matrix composite

“…Compared to the base alloy, hardness was improved from 9.41 % to 41.17 % and compressive strength from 9.28 % to 33.20 %. Scanning electron microscopy examination shows that the constituents are uniformly mixed and the loads are uniformly transmitted [13].…”