Synthesis of Al-Al₃Ti In Situ Metal Matrix Composites by Salt Route and Evaluation of their Mechanical Properties

Abstract:

Current work, aims at preparation and characterization of Al-Al₃Ti in-situ metal matrix composites with varying percentage of in-situ Al₃Ti (3 and 5%) reinforcement. The composites were prepared by the salt route involving reaction of commercial purity aluminum (99.7%) and potassium titanium flourate halide (K₂TiF₆) salt at a reaction temperature of 800°C and with 60min. holding time. The prepared composites were subjected to microstructural studies using Scanning Electron Microscope. Further, the work aims at evaluating mechanical properties of the prepared composites as per ASTM standards. Microstructural characterization using SEM revealed blocky morphology of Al₃Ti intermetallics with fairly homogeneous distribution. Insitu Al-Al₃Ti composites have shown better mechanical properties when compared to the unreinforced Al matrix.

• Periodical: Advanced Materials Research (Volumes 984-985)
• Pages: 280-284
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.984-985.280
• Online since: July 2014
• Authors: S.A. Kori, S.L. Biradar*, Virupaxi Auradi
• Keywords: Al₃Ti Intermetallic Particles, Hardness, Microstructure, Salt Route, Tensile Strength

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