Development of Cu particles and Cu core-shell particles reinforced Al composite |
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Authors: | D Yadav |
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Affiliation: | Department of Metallurgical and Materials EngineeringIndian Institute of Technology Madras, Chennai 600 036, India |
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Abstract: | Copper particles were incorporated and retained in elemental state in an aluminium matrix by friction stir processing thereby producing a non-equilibrium particulate composite. The processed Al–Cup composite exhibited improved strength with significantly high ductility. The composite was stable up to a temperature of more than 300°C. Thermal exposure at 350°C for more than 10 min led to diffusion of Cu atoms into the Al matrix forming a core-shell type structure in the Cu particles and thus producing an Al–Cu core-shell composite. The shell consists of multiple layers, the thickness of which was controllable. |
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Keywords: | Metal matrix composites Core-shell Grain refinement Friction stir processing |
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