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

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.

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Microstructure and Mechanical Characterization of Al-Tib2 In Situ Metal Matrix Composites Produced via Master Alloy Route

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.592-594.494 ◽

2014 ◽

Vol 592-594 ◽

pp. 494-498 ◽

Cited By ~ 2

Author(s):

V. Auradi ◽

S.L. Biradar ◽

S.M. Suresha ◽

S.A. Kori

Keyword(s):

Metal Matrix Composites ◽

Master Alloy ◽

Metal Matrix ◽

Microstructural Characterization ◽

Matrix Composites ◽

X Ray Diffraction ◽

C 30 ◽

Al Matrix

In the present work, Al-TiB2in-situ metal matrix composites were processed via master alloy route at 800°C-30 min. with 5 and 7wt% of TiB2particles. Microstructural characterization of the prepared insitu composites were carried out using XRD, SEM/EDX studies. X ray diffraction studies have shown the presence of Al3Ti and TiB2phases, however, the presence of AlB2particles is also highly likely. SEM/EDX characterization revealed fairly uniformly distributed TiB2particles having hexagonal morphology with size distribution in the ranges between 0.5-10μm. Further, presence of TiB2particles in Al matrix have resulted in improvement in hardness and tensile properties of the Al matrix while decrease in ductility was observed.

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Effect of TiB2 particle addition on the mechanical properties of Al/TiB2 in situ formed metal matrix composites

Materials Testing ◽

10.3139/120.111273 ◽

2018 ◽

Vol 60 (12) ◽

pp. 1221-1224 ◽

Cited By ~ 4

Author(s):

Balachandran Gobalakrishnan ◽

P. Ramadoss Lakshminarayanan ◽

Raju Varahamoorthi

Keyword(s):

Mechanical Properties ◽

Metal Matrix Composites ◽

Metal Matrix ◽

Tib2 Particle ◽

Matrix Composites ◽

Particle Addition

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Processing and Characterization of Aluminum Metal Matrix Composites: An Overview

REVIEWS ON ADVANCED MATERIALS SCIENCE ◽

10.1515/rams-2018-0039 ◽

2018 ◽

Vol 56 (1) ◽

pp. 79-90 ◽

Cited By ~ 6

Author(s):

Mudasar B. A. Pasha ◽

Mohammed Kaleemulla

Keyword(s):

Metal Matrix Composites ◽

Metal Matrix ◽

Low Cost ◽

Review Article ◽

Homogeneous Distribution ◽

Thermal Coefficient ◽

Matrix Composites ◽

Aluminum Metal ◽

Aluminum Metal Matrix Composites

Abstract An increased interest is observed in recent years in the processing of aluminum metal matrix composites (AMMCs) due to their remarkable properties such as light in weight, very high strength, environmental resistance, corrosion resistance, and low thermal coefficient of expansion compared to conventional metal and alloys. This leads to superior compressive strength, for fuel cell applications, low density and low cost for automotive and small engine applications. Homogeneous distribution of the reinforcement phase in turns improves hardness and ultimate tensile strength for lightweight applications, especially aeronautical and high-speed train industries. Uniform distribution of reinforcement directly influences properties and quality of the composite material. And develop a conventional low-cost method of producing metal matrix composites to obtain a homogenous dispersion of reinforcing materials. In this review article, processing and characterization of aluminum metal matrix composites have been reviewed. The Point of convergence is given to the new fabrication techniques, their physical and mechanical characterization. Substantially this review article censoriously reviews the present and past state of understanding of the processing of aluminum metal matrix composites with different reinforcement. The resulting failure mechanisms are discussed. Instructions are given to clarify open questions related to the fabrications of aluminum metal matrix composites.

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