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In the present day availability of agricultural waste products is very huge quantity. Most of the industries prefer Metal matrix composite (MMC) due to their density, high strength to weight ratio, hardness, corrosion resistance, fatigue and creep resistance. Hence they are widely used in structural applications along with aerospace and automobile industry, marine, sports, electronic and automation industries. In the present paper a study is focused on the mechanical, tribological and corrosion behavior of the metal matrix composite using different agro waste ash which is easily available. Agro waste ash like Rice Husk, groundnut shell, bamboo leaf, coconut shell can be used as reinforcement and applicable for various applications like automotive, structural components. From this current study, it's clearly identified that addition of agro waste ash as reinforcement with Aluminium improves the properties of metal matrix composite. Aluminium metal with such reinforcement materials has shown a high specific strength, yield strength and ultimate tensile strength, also it will increase hardness, satisfactory levels of corrosion resistance.

First-principles informed atomistic-scale simulations are conducted to compute equilibrium energy accommodation coefficients of aluminum-noble gas systems for a temperature range of 25−800 K. Density functional theory (DFT) derived gas−solid potential functions are employed to facilitate accurate predictions. Three different gases are considered: helium, argon, and xenon. Two different methods are employed to calculate accommodation coefficients: the parallel slab and single slab methods. In the parallel slab method, the gas is sandwiched between two parallel Al slabs and a temperature gradient is imposed. In the single slab method, the interaction between each gas atom and a slab is simulated separately, and over 10 000 such interactions are considered. The accommodation coefficients are generally lowest for helium and greatest for xenon. At a temperature of 300 K, the computed accommodation coefficients are 0.09, 0.27, and 0.34 for helium, argon, and xenon, respectively. The effect of temperature on accommodation coefficient is also studied, and new physical insights are offered to explain the temperature dependence of accommodation coefficient. Deficiencies and issues with classical models are identified. Contradictions and scatter in the experimental data are also resolved. Predictions agree reasonably well with the experimental data reported for smooth bare aluminum surfaces, but they exhibit poor agreement with other available experimental data reported for rough and passivated surfaces. The parallel slab method is found to be more effective for computing equilibrium accommodation coefficients.

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