首页|Analysis on Microstructure of AISi7Cu5 Alloy by Slope Near-Liquidus Method
Analysis on Microstructure of AISi7Cu5 Alloy by Slope Near-Liquidus Method
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SSM(Semi-solid metal) forming has been developed to become a novel technology in the 21 st century for the formation of near net shape components, competing with conventional casting and forging technologies. In this paper, the casting microstructure and its change during remelting of AlSi7Cu5 alloy casting by slope near-liquidus method were researched. Experiments show that it has a significant impact on microstructure by cooling method, the thermal conductivity of the casting mold and casting method. The microstructure of AlSi7Cu5 alloy obtained by slope near-liquidus method at 600℃ is uniform and small equiaxed Its average grain diameter is about 55.2um, and its average grain size roundness is about 2.13. The reheated microstructure which can be applied in thixo-forming preferable will be obtained by keeping constant temperature 25min at 580℃.
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