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Microstructural characterization of squeeze-cast Al-8Fe-1.4V-8Si
Date
2008-06-25
Author
ARHAMI, M.
SARIOGLU, F.
Kalkanlı, Ali
HASHEMIPOUR, M.
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Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License
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This paper investigates the effect of vanadium on the composition and morphology of intermetallics formed during the squeeze casting of Mg-modified Al-8Fe-1.4V-8Si alloy in both monolithic form and as-reinforccd with 7.58,10.52 and 15.68 wt.% SiC particles (SiC(p)). Iron intermetallics of alpha-Al(7)(Fe,V)(3)Si and beta-Al(18)Fe(11)Si phases were predominantly observed in the alloy and composite. SEM studies and the EDX analyses revealed that refinement of Fe-intermetallics and modification of beta-phases to less deleterious morphologies of alpha-phases has been achieved by vanadium addition of 1.4%. Also, heat treatment enhances V diffusion and SiC particles act as nucleation sites for the formation of finer alpha-intermetallics. Fractographs exhibited cracking of long P-phases and partial decohesion of SiC(p) from the matrix.
Subject Keywords
Mechanical Engineering
,
General Materials Science
,
Mechanics of Materials
,
Condensed Matter Physics
URI
https://hdl.handle.net/11511/41675
Journal
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
DOI
https://doi.org/10.1016/j.msea.2007.07.065
Collections
Department of Metallurgical and Materials Engineering, Article