Aluminium hybrid metal matrix composites have been widely used in automobile, aerospace and structural application because of their good tribological and mechanical properties. This work deals with the preparation of composites and evaluation of mechanical properties by introducing micro size reinforcement particle in the aluminium alloy. The reinforcement of Al alloy hybrid metal matrix composite with Al2O3, B4C, and SiC particles are produced by stir casting. After heat treatment process the casting materials are machined as per ASTM standard size. The mechanical properties such as tensile, hardness, impact test were conducted at room temperature. The mechanical properties are increased by increasing the weight percentage of reinforcement particles.

No abstract

No abstract

The niobium and its alloys have been used for automobile, marine, and aerospace due to its superior properties such as a lightweight ratio, strength, corrosion resistance, thermal and electrical conductivity. The present work was used to improve the substance properties such as hardness and wear. Tantalum Carbide (TaC) reinforced niobium metal matrix composite (MMC) was produced through the stir casting route. The specific wear rate was determined through a pin on disc tribometer with respect to the input actors such as sliding velocity, load, and temperature. Taguchi optimization was applied to found the optimal parameters. The variance analysis was used to found the influential factor in the wear rate.

In this investigation, experiments have been conducted to analyse the mechanical properties of AA7075 with new combination of ceramic particles such as Al2O3, TiO2, B4C. Three different weight % of the innovative hybrid composites have been prepared by stir casting process. Various mechanical tests such as hardness, tensile, impact test have been conducted. It is found that the mechanical properties i.e. hardness, tensile strength and impact strength gets increases by increasing the weight percentage of Al2O3 as 3%, 6% &9% and keeping the weight percentage of B4C & TiO2 as 5%.