Ghulam Mustafa

Comsats University Islamabad, Mechanical Engineering, Faculty Member

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I am a lecturer in the Department of Mechanical Engineering, COMSATS University Islamabad, Sahiwal Campus, Pakistan. I received my Master's degree in Mechanical Manufacture and Automation from the Dalian University of Technology, China (2019).

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Atmospheric pressure plasma jet assisted micro-milling of Inconel 718

The International Journal of Advanced Manufacturing Technology, 2019

Nickel-based superalloy Inconel 718 is one of the hardest materials owing to its high hardness an... more Nickel-based superalloy Inconel 718 is one of the hardest materials owing to its high hardness and additional physical properties. It is the most commonly used superalloy in gas turbine, aerospace, and automobile sectors. Micro-milling is generally employed for precision manufacturing of tiny structures, but it is difficult to obtain good surface quality with micro-milling Inconel 718 because of its excellent mechanical properties like high strength and hardness. Atmospheric pressure cold plasma jet can effectively improve surface wettability without changing surface micromorphology, which is expected to have positive lubricating effects in micro-machining of difficult-to-cut materials. In addition, minimum quantity lubrication can induce coolants into the machining area more efficiently, and is especially appropriate for micro-machining. In this paper, we propose a composite micro-milling method combining plasma jet and minimum quantity lubrication to machine Inconel 718. The effect of plasma jet on machinability is investigated by performing micro-milling experiments under different atmospheres (dry, nitrogen jet, plasma jet, minimum quantity lubrication, and plasma + minimum quantity lubrication). Surface roughness, cutting forces, and residual stress are the measures using corresponding techniques. The results indicate that the atmospheric pressure cold plasma jet can efficiently improve surface quality and reduce cutting forces of Inconel 718.

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Atmospheric pressure plasma jet assisted micro-milling of Inconel 718

The International Journal of Advanced Manufacturing Technology, 2019

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Ghulam Mustafa

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