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<p>Nowadays, composite materials are widely used in many applications due to their excellent strength-to-weight ratio, thermal diffusivity, and thermal conductivity in various engineering components. Currently, researchers are primarily focused on developing new materials for specialized applications such as high-temperature environments, cryogenic systems, and the chemical industry. Various reinforcements are added to enhance specific properties, particularly strength and hardness. Strength enhancement is achieved either by using a single reinforcement or a combination of two or more. In this investigation, LM13 alloy is reinforced with titanium diboride (TiB<sub>2</sub>) in varying amounts from 2 to 10&#xa0;wt.%, in increments of 2 wt.%, to study its effect on strength and microstructural characteristics. The study also focuses on post-heat treatment processes aimed at further improving strength. Finally, a comparison of the results is made to evaluate the effectiveness of the reinforcement and heat treatment. The investigation reveals that the LM13 matrix with 6&#xa0;wt.% TiB<sub>2</sub> exhibits the highest strength (as-cast: 118&#xa0;MPa; post-heat treatment: 127&#xa0;MPa) under both conditions compared to other compositions. This strength enhancement may be attributed to the fine dispersion of the reinforcement within the matrix and an acceptable level of porosity.</p>

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Influence of Solution Treatment and Artificial Aging on the Strength of LM13 Reinforced with Titanium Diboride Metal Matrix Composite

  • 期刊论文

  • 发表日期：

    2025年8月19日

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  • G. Mahendran,
  • R. Ramadoss,
  • C. Rajendran,
  • G. Selvakumar,
  • V. Jayaseelan

摘要

Nowadays, composite materials are widely used in many applications due to their excellent strength-to-weight ratio, thermal diffusivity, and thermal conductivity in various engineering components. Currently, researchers are primarily focused on developing new materials for specialized applications such as high-temperature environments, cryogenic systems, and the chemical industry. Various reinforcements are added to enhance specific properties, particularly strength and hardness. Strength enhancement is achieved either by using a single reinforcement or a combination of two or more. In this investigation, LM13 alloy is reinforced with titanium diboride (TiB2) in varying amounts from 2 to 10 wt.%, in increments of 2 wt.%, to study its effect on strength and microstructural characteristics. The study also focuses on post-heat treatment processes aimed at further improving strength. Finally, a comparison of the results is made to evaluate the effectiveness of the reinforcement and heat treatment. The investigation reveals that the LM13 matrix with 6 wt.% TiB2 exhibits the highest strength (as-cast: 118 MPa; post-heat treatment: 127 MPa) under both conditions compared to other compositions. This strength enhancement may be attributed to the fine dispersion of the reinforcement within the matrix and an acceptable level of porosity.