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Effect of Cobalt content on mechanical properties of Al-Si alloy | ||
| Wasit Journal of Engineering Sciences | ||
| Article 1, Volume 2, Issue 1, 2014, Pages 46-58 | ||
| Author | ||
| Maryam A.B | ||
| Abstract | ||
| This work encompasses studying the effect of different contents of Co on Al-Si alloy with Sb modification prepared by stir casting method. The content of Co is varying from 0 to 1.2wt%, The effect of Cobalt on microstructure, micro hardness, tensile strength and wear rate were studied extensively. The results show that the intermetallic compounds was increased with the increasing of Cobalt content .The Co-bearing compounds presented as small block shape at first and gradually turned into dendrite or fish bone shape. The addition of Co has appositive effect on tensile strength of the Al-Si alloys that used in the current research, the maximum tensile strength was (177MPa) when Co content was 0.9%Co at room temperature as well as wear rate were studied in this paper and noticed that the addition at 0.9%Co had the better effect at low and high load(5N),(10N). | ||
| Keywords | ||
| Aluminum Alloy; cobalt; mechanical properties; stir casting | ||
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