Heat treatment and mechanical characterization of LM-25/tungsten carbide metal matrix composites

Navya Thirumaleshwar Hegde, Dayananda Pai, Ramakrishna Hegde

Research output: Contribution to journalConference article

Abstract

In this work, the effect of heat treatment on the mechanical properties and the microstructure of heat treated aluminium alloy LM 25 (Al-Si7-Mg) as well as on the metal matrix composite (LM 25), reinforced with tungsten carbide (WC) has been experimentally studied. The composites were fabricated through Stir Casting Method with LM 25 as matrix material and tungsten carbide (WC) with 0%, 3%, 6% and 9% by weight as reinforcement material. The specimens were made as per ASTM standards in order to test for its tensile strength, hardness and wear performance. It is observed that LM 25 alloy aged at 150 °C has better mechanical properties. Significant improvement in tensile strength and hardness is observed with addition of WC as reinforcement. The results show up to 30% improvement in wear strength of 6% and 9% wt WC when compared to 0%wt WC. The property enhancement of the composites can be achieved by adding WC in to LM 25.

Original languageEnglish
Pages (from-to)810-817
Number of pages8
JournalMaterials Today: Proceedings
Volume19
DOIs
Publication statusPublished - 01-01-2019
Event1st International Conference on Manufacturing, Material Science and Engineering, ICMMSE 2019 - Kandlakoya, India
Duration: 16-08-201917-08-2019

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Tungsten carbide
Metals
Heat treatment
Composite materials
Reinforcement
Tensile strength
Hardness
Wear of materials
Mechanical properties
tungsten carbide
Aluminum alloys
Casting
Microstructure

All Science Journal Classification (ASJC) codes

  • Materials Science(all)

Cite this

Hegde, Navya Thirumaleshwar ; Pai, Dayananda ; Hegde, Ramakrishna. / Heat treatment and mechanical characterization of LM-25/tungsten carbide metal matrix composites. In: Materials Today: Proceedings. 2019 ; Vol. 19. pp. 810-817.
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abstract = "In this work, the effect of heat treatment on the mechanical properties and the microstructure of heat treated aluminium alloy LM 25 (Al-Si7-Mg) as well as on the metal matrix composite (LM 25), reinforced with tungsten carbide (WC) has been experimentally studied. The composites were fabricated through Stir Casting Method with LM 25 as matrix material and tungsten carbide (WC) with 0{\%}, 3{\%}, 6{\%} and 9{\%} by weight as reinforcement material. The specimens were made as per ASTM standards in order to test for its tensile strength, hardness and wear performance. It is observed that LM 25 alloy aged at 150 °C has better mechanical properties. Significant improvement in tensile strength and hardness is observed with addition of WC as reinforcement. The results show up to 30{\%} improvement in wear strength of 6{\%} and 9{\%} wt WC when compared to 0{\%}wt WC. The property enhancement of the composites can be achieved by adding WC in to LM 25.",
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Heat treatment and mechanical characterization of LM-25/tungsten carbide metal matrix composites. / Hegde, Navya Thirumaleshwar; Pai, Dayananda; Hegde, Ramakrishna.

In: Materials Today: Proceedings, Vol. 19, 01.01.2019, p. 810-817.

Research output: Contribution to journalConference article

TY - JOUR

T1 - Heat treatment and mechanical characterization of LM-25/tungsten carbide metal matrix composites

AU - Hegde, Navya Thirumaleshwar

AU - Pai, Dayananda

AU - Hegde, Ramakrishna

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AB - In this work, the effect of heat treatment on the mechanical properties and the microstructure of heat treated aluminium alloy LM 25 (Al-Si7-Mg) as well as on the metal matrix composite (LM 25), reinforced with tungsten carbide (WC) has been experimentally studied. The composites were fabricated through Stir Casting Method with LM 25 as matrix material and tungsten carbide (WC) with 0%, 3%, 6% and 9% by weight as reinforcement material. The specimens were made as per ASTM standards in order to test for its tensile strength, hardness and wear performance. It is observed that LM 25 alloy aged at 150 °C has better mechanical properties. Significant improvement in tensile strength and hardness is observed with addition of WC as reinforcement. The results show up to 30% improvement in wear strength of 6% and 9% wt WC when compared to 0%wt WC. The property enhancement of the composites can be achieved by adding WC in to LM 25.

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