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Influence of ageing temperature on the tribological characteristics of LM25/Al2O3/SiC hybrid metal matrix composite for lightweight applications

Publication Type : Journal Article

Publisher : Proceedings of the Institution of Mechanical Engineers Part L Journal of Materials Design and Applications

Source : Journal of Materials: Design and Applications

Url : https://journals.sagepub.com/doi/10.1177/14644207231219602?icid=int.sj-full-text.citing-articles.1

Campus : Amritapuri

School : School of Engineering

Department : Mechanical Engineering

Year : 2023

Abstract : The demand for hybrid composites has lately increased due to their extraordinary qualities, which include unique mechanical, tribological, and physical capabilities not found in other materials. These composites improve performance and utility by mixing different reinforcing components, making them highly sought after. However, there is a study gap on the effects of long-term ageing on the tribological characteristics of LM25 (Al–6.6Si–0.2Mg)/Al2O3/SiC metal matrix composites (MMCs). As a result, extensive studies on the influence of ageing temperature on the tribological properties of LM25/Al2O3/SiC MMCs via long-term ageing effects still need to be included. Therefore, this study investigated the metallurgical and hardness properties of stir-cast LM25 alloy reinforced with Al2O3 and SiC particulates with varying ageing temperatures. Furthermore, dry sliding wear behaviour is also examined. The investigation concluded that adding micron-sized Al2O3 and SiC particles to LM25 improves hardness and tribological properties. As the ageing temperature increased, the eutectic particles became coarser. Furthermore, the result illustrates that the coefficient of friction (COF) values also enhanced with wear rates. Higher loads increased the wear rate and COF, whereas higher sliding speeds decreased the COF and wear rate. © IMechE 2023.

Cite this Research Publication : Karthik V Shankar, Reham Fathi, Bassiouny Saleh,Balakrishnan Shankar,Arjun Santhosh, KV Amith, C M Srihari, Jyothis B Nair,Omkar Prakash Naikade, Influence of ageing temperature on the tribological characteristics of LM25/Al2O3/SiC hybrid metal matrix composite for lightweight applications, Journal of Materials: Design and Applications.

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