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Combined effect of strontium modifier and antimony refiner on texture and growth mode of eutectic phase in an Al-11Si-2Cu-0.8Zn-0.6Fe cast alloy |
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| Authors: | Saeed Farahany Ali Ourdjini Alireza Hekmat-Ardakan |
| Affiliation: | 1. Department of Materials and Mechanical Engineering, Buein Zahra Technical University, 3451745346, Qazvin, Iran;2. Department of Mechanical Engineering, Faculty of Engineering, University of Ottawa, Ontario, K1N 6N5 Canada;3. école Polytechnique de Montréal, Dép. de Génie Chimique, P.O. Box 6079, Centre-ville, Montreal, Quebec H3C 3A7, Canada |
| Abstract: | Results of electron back-scattered diffraction and transmission electron microscopy studies reveal that the orientation of aluminium in the eutectic phase is different from the surrounding aluminium dendrites and that twin spacing of eutectic silicon increased significantly due to the interaction between strontium and antimony. In addition, the formation of ternary Mg2Sb2Sr intermetallic compound that precedes the eutectic reaction was proposed to be responsible for interaction. |
| Keywords: | aluminium alloy texture analysis intermetallic compund phase equilibria |