Tribological Suitability of aluminium hybrid composite above atmospheric temperature

Abstract

Industries are facing problems with light weight alloys due to tribological impediments in which utmost complicated problem is wear. As a consequence, endeavour has been made to fabricate increased wear resistance materials. In 2014, 2.87 million tons of aluminium was used by the global automotive industry (excluding China). By 2020, an annual demand of 4.49 million tons of aluminium is projected. Key factors of this growth include both increased production of automobiles and broader use of aluminium alloys in modern automobiles.The main advantage of spacecraft aluminum alloys is their ability to withstand hi gh and low temperatures, vibration loads, and radiation. Additionally, aluminium alloys exhibit outstanding strength and durability in cryogenic environments as the temperature drops. In the present investigation Al2618 is used as a Matrix and hard ceramic boron carbide, with amorphous graphite is used as reinforcement. Stir casting is used to synthesis the hybrid composite. Statistical model taguchi is used to assess the dry sliding wear properties of the hybrid Metal matrix composite at different temperature (50°C, 100°C, 150°C). Evaluation of particle distribution of reinforcement in the matrix and worn surface morphology is studied by SEM. Wear resistance of the hybrid composite (reinforced with B4C & Gr) is enhanced at 150°C than conventional alloy. Glazed layer formation in Al2168 matrix is less than glazing layer formation formed on hybrid composites Adhesive wear is observed during test.