In-situ formation of Al2O3 nanoparticles during friction stir processing of AlSiO2 composite
作者： G.L. You , N.J. Ho , P.W. Kao
DOI: 10.1016/J.MATCHAR.2013.03.004
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摘要: Abstract Aluminum matrix composites reinforced with nanometer-sized Al 2 O 3 particles were produced from SiO powder mixture by using friction stir processing (FSP). In the composites, in situ oxide-aluminum displacement reactions. This approach combined hot working nature of FSP and an exothermic reaction between . The formed at Al/SiO interface, dispersed aluminum stirring action rotating tool during FSP. Microstructural examinations revealed present mainly form clusters nano-sized (approximately 20 nm) particles, which identified as α-Al Because fine dispersion ultrafine-grained matrix, exhibit superior tensile strength ductility. Quantitative phase analysis indicated that extent increased conjunction increasing rotation rate a decreasing traverse speed
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