Manufacturing and Characterization of Functionally Graded Material Automotive Piston Using Centrifugal Casting Technique

Abstract:

The process of fabricating reliable materials according to efficient usage has become one of the most vital concerns. In this paper, the fabrication of functionally graded materials (FGMs) is the target using a specified application of an internal combustion engine piston model to achieve such a gradient. With a convenient rotational speed under the concept of centrifugal casting technique, the required gradient piston was successfully produced from two pure aluminum alloys A336 and A242 by such a new mechanical technique for having the required gradient. The percentages of internal ingredients, mainly, silicon were controlled axially through the piston. Chemical composition analysis, micro-hardness and wear resistance tests were performed to check the gradient and to know the difference between mechanical properties for each piston portion from its top combustion chamber to its skirt, achieving compatible results through performed tests. Obvious opposite direction gradient of silicon content to copper content appeared. Micro-hardness, wear resistance and coefficient of friction values showed a successfully gradient in the axial direction of the piston model.

• Periodical: Solid State Phenomena (Volume 318)
• Pages: 13-24
• DOI: https://doi.org/10.4028/www.scientific.net/SSP.318.13
• Online since: May 2021
• Authors: Hazem H. Elkotb, Rania Mostafa, A. A. Abdel Samad, Tawakol A. Enab*
• Keywords: Automotive Al-Alloys, Centrifugal Casting Technique, Functionally Graded Material (FGM), Internal Combustion Engine Piston, Micro-Hardness, Wear

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