Effect of Sr addition on an Al–7Si–10 vol.% SiC p cast composites

The effect of additions of Sr (in the range 0.05–0.5%) on the microstructural characteristics of Al–7 wt.% Si–10 vol.% SiC p composites have been studied. Optical microscopy (OM), SEM, EDS, WDS microanalysis techniques and X-ray diffraction powder techniques have been used for the characterization o...

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Published inMaterials science & engineering. A, Structural materials : properties, microstructure and processing Vol. 382; no. 1; pp. 315 - 320
Main Authors Garcia-Hinojosa, J.A., Gonzalez, C.R., Juárez, J.I., Surappa, M.K.
Format Journal Article
LanguageEnglish
Published Elsevier B.V 2004
Subjects
Interface
Microstructures
MMCs
Particle-reinforcement
MMCs
Particle-reinforcement
Microstructures
Interface
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Summary:The effect of additions of Sr (in the range 0.05–0.5%) on the microstructural characteristics of Al–7 wt.% Si–10 vol.% SiC p composites have been studied. Optical microscopy (OM), SEM, EDS, WDS microanalysis techniques and X-ray diffraction powder techniques have been used for the characterization of the composites. It was found that Sr concentrations between 0.05 and 0.20 facilitates incorporation of higher volume fraction of SiC particles and also does not contribute to the overall modification of the matrix. However, at higher wt.% of Sr, Sr-rich compounds were found. These Strontium rich compounds were located at the matrix–ceramic interface.
ISSN:0921-5093
1873-4936
DOI:10.1016/j.msea.2004.05.017