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首页> 外文期刊>Journal of Materials Processing Technology >The formation of rosetta alpha phase, structural evolution during the reheating and semi-solid casting of AlSi7Mg alloy
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The formation of rosetta alpha phase, structural evolution during the reheating and semi-solid casting of AlSi7Mg alloy

机译：Rosettaα相的形成，AlSi7Mg合金的再加热和半固态铸造过程中的结构演变

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摘要

The non-dendritic primary phase is required for the production of parts through the semi-solid metal forming process, for which the spherical phase is the most favored. Under the condition of continuous casting with electromagnetic stirring, the primary phase tends to be rosette-like. For AlSi7Mg alloy, there are three possible aspects contributing to the formation of the rosette alpha phase. The billets can be reheated to their semi-solid state reliably and repeatedly through a two-phase heating procedure using a vertical tube furnace. The workable temperature is around 577-580 deg C. For demonstration, the connecting rods for an air compressor were fabricated successfully through the semi-solid forming process using a 350 t high-pressure die casting unit.
机译：通过半固态金属成型工艺生产零件需要非树突状主相，其中最优选球形相。在电磁搅拌下连续铸造的条件下，主相趋于呈玫瑰花状。对于AlSi7Mg合金，可能存在三个方面导致玫瑰形α相的形成。通过使用立式管式炉的两阶段加热程序，可将坯料可靠且重复地加热至半固态。可使用的温度约为577-580摄氏度。为演示起见，使用350吨高压压铸装置通过半固态成型工艺成功制造了空气压缩机的连杆。

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