Refinement the Microstructure of Al–7Si Alloy by the Addition of Cadmium | ||
| Journal of University of Babylon | ||
| Article 1, Volume 20, Issue 1, February 2012, Pages 62-66 | ||
| Author | ||
| Sura Abd Al-Zahrah Muhsion | ||
| Abstract | ||
| Cadmium (Cd) modified aluminium–silicon cast alloys are well known for their outstanding mechanical properties as they combine excellent strength with good ductility that is due to a modification of brittle Si in the eutectic with traces of Cd (0.2–1.0 wt%). The results showed that the Cd leads to the refinement of eutectic silicon from ~95 to 10µm. The alloys which used in this work were Al-7Si alloy with additions of 0.2, 0.6 and 1 wt% Cd as well as Al-7%Si with out Cd addition. The effect of keeping time also studied and the results indicate that the addition of 1%Cd with keeping time 3min was the best (about 10 µm). | ||
| Keywords | ||
| Casting; Solidification; Microstructure; Al alloys; modification | ||
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