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1998•Journal of University of Science and Technology BeijingRequires access

Microstructrural Characteristics of Semi-Solid State Al-24%Si Alloy during Isothermal Electromagnetic Stirring

Ust Beijing

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Abstract

Microstructure characteristics of Al-24%Si alloy was studied at the condition of isothermal electromagnetic stirring.Experiment was divided two groups: Stirring and no stirring during cooling course.Isothermal temperature is 577℃ with shearing time up to 40 minutes.Results discover that primary silicon crystal fragmentation and agglomeration occurs simultaneously in the course of stirring.The size of primary silicon phase tends to a constant. Spherical phase appears in the microstructure.

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Microstructure characteristics of Al-24%Si alloy was studied at the condition of isothermal electromagnetic stirring.Experiment was divided two groups: Stirring and no stirring during cooling course.Isothermal temperature is 577℃ with shearing time up to 40 minutes.Results discover that primary silicon crystal fragmentation and agglomeration occurs simultaneously in the course of stirring.The size of primary silicon phase tends to a constant. Spherical phase appears in the microstructure.

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Available abstract

Microstructure characteristics of Al-24%Si alloy was studied at the condition of isothermal electromagnetic stirring.Experiment was divided two groups: Stirring and no stirring during cooling course.Isothermal temperature is 577℃ with shearing time up to 40 minutes.Results discover that primary silicon crystal fragmentation and agglomeration occurs simultaneously in the course of stirring.The size of primary silicon phase tends to a constant. Spherical phase appears in the microstructure.

Key concepts: Isothermal process, Microstructure, Materials science, Alloy, Shearing (physics), Economies of agglomeration, Silicon, Metallurgy

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