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This article reports on the modification of eutectic silicon in Al–7Si alloy inoculated with Sb. Present results suggest that Sb results in better modification of eutectic silicon on longer melt holding than at short holding after inoculation. The results also reveal that Sb segregates to the bottom of the crucible on prolonged holding of the melt at 720 °C, which later forms AlSb particles during...
This article focuses on the microstructural refinement of as-cast A356 alloy, obtained by melt inoculation of the same. The inoculants used are Sr (modifier), Sb (modifier) and Al–Ti–C (grain refiner). Microstructural characterization of A356 alloy reveals that the Secondary Dendritic Arm Spacing (SDAS) of α-Al dendrites and size/morphology of eutectic silicon decrease by treating the melt with pre-defined...
Present article reports the microstructure and wear behavior of grain refined and modified Al–7Si–0.3Mg (LM25) alloy. Combined grain refinement and modification is achieved by inoculating LM25 melt with various inoculation levels (0.2, 0.5 and 1.0wt%) of a novel Al base master alloy containing Ti, C and Sr (synthesized in the authors’ laboratory) at 720°C. The wear resistance of LM25 alloy improves...
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