THERMAL ANALYSIS OF NICKEL ALLOY/AL2O3/TIO2 HYBRID METAL MATRIX COMPOSITE IN AUTOMOTIVE ENGINE EXHAUST VALVE USING FEA METHOD

The current research aims to develop a hybrid metal matrix composition that focuses on the nickel alloy and its thermal properties. The different temperature ranges are used to analyze the function of MMCs such as thermal conductivity and coefficient of thermal expansion. This paper addresses the thermal properties obtained from a series of Al2O3 and TiO2 reinforced nickel alloy (ASTM A494 M), with dispersed particle sizes ranging from 40-45 microns of Al2O3 and 1-5 microns of TiO2. The quantity of the Al2O3 addition varies from 3-12 weight % and 9 weight % of TiO2 unvarying in the stages of three weight percentages. The microstructural investigation states that, because of the stir casting on the vortex, the distribution of reinforcements is uniform with a strong bond. With the increase in Al2O3 and TiO2 content in HMMCs, a thermal property is found to diminish significantly. The results indicate that the reinforcements have a major effect on the thermal expansion coefficient as well as on the thermal conductivity of the hybrid composites being produced. Various types of microstructural have been performed using electron microscopy scanning and EDAX. The limited examination of the exhaust valve of the I C engine shows that the nickel combination composites can be utilized as a substitute for the present valve material (Ni-Cr alloy steel). All tests acted in this investigation meet ASTM specifications.