Impact of heat treatment on the mechanical performance of hot extruded Al6061-BN reinforced metal matrix composites

Boron nitride (BN) reinforced Al6061 aluminum-based composites are synthesized by conventional stir casting method followed by exposure to hot extrusion. The optical images confirmed the distribution of BN nanoparticles in the aluminum alloy matrix. The concentration of BN is varied from (0.5, 1.5,...

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Bibliographic Details
Published in:Bulletin of the Polish Academy of Sciences. Technical sciences 2021, Vol.69 (3), p.137014-137014
Main Authors: Mukesh, Y.B., Naik, Prem Kumar, Rao R, Raghavendra, Vishwanatha, N.R., Prema, N.S., Girish, H.N., Laxmana, Naik L., Madhusudan, Puttaswamy
Format: Article
Language:English
Subjects:
al6061
Aluminum
Aluminum base alloys
Boron nitride
Heat treatment
Hot extrusion
Internal friction
Mechanical properties
Metal matrix composites
Nanoparticles
Reinforced metals
Temperature dependence
Tensile properties
Tensile strength
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Summary:Boron nitride (BN) reinforced Al6061 aluminum-based composites are synthesized by conventional stir casting method followed by exposure to hot extrusion. The optical images confirmed the distribution of BN nanoparticles in the aluminum alloy matrix. The concentration of BN is varied from (0.5, 1.5, 3, 4.5, 6, 7.5, and 9 wt%) in the composites and its effect on the tensile strength was investigated. The results revealed that both extruded and heat-treated composites specimens showed enhanced toughness and tensile strength by increasing BN nanoparticle concentration. The heat-treated composite samples showed lower flexibility of up to 40%, and further, it exhibited 37% greater hardness and 32% enhancement in tensile strength over the extruded sample. The tensile properties of Al6061-BN composites were evaluated by temperature-dependent internal friction (TDIF) analysis and the results showed that the as-prepared composite's strength increased with temperature.
ISSN:2300-1917
0239-7528
2300-1917
DOI:10.24425/bpasts.2021.137014