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Centrifugal Infiltration Process of Fibrous Tubular Preform by Al–Cu Alloy

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The kinetics of centrifugal infiltration of fibrous tubular preform is built theoretically, and simulations are conducted to study the effects of various casting conditions on infiltration kinetics and macrosegregation by combining with the energy, mass and kinetic equations. A similarity way is used to simplify the one-dimensional model and the parameter is ascertained by an iterative method. The results indicate that the increase of superheat, initial preform temperature, porosity tends to enlarge the remelting region and decrease copper solute concentration at the infiltration front. Higher angular velocity leads to smaller remelting region and solute concentration at the tip. The pressure in the infiltrated region increase significantly when the angular velocity is much higher, which requires a stronger preform. It is observed that the pressure distribution is mainly determined by the angular velocity, and the macrosegregation in the centrifugal casting is greatly dependent on the superheat of inlet metal matrix, initial temperature and porosity of the preform, and the angular velocity.
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Document Type: Research Article

Affiliations: 1: School of Mechanical and Power Engineering, Shanghai Jiaotong University, Shanghai 200240, China 2: School of Mechanical and Power Engineering, Shanghai Jiaotong University, Shanghai 200240, China;, Email: [email protected]

Publication date: 2009-10-01

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