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Mechanical properties optimization of alloys AlSi7Mg casting in sand moulds

MechanicalpropertiesoptimizationofalloysAlSi7MgcastinginsandmouldsAbstractIn the present work the mechanical properties of the alloy AlSi7Mg were studied in order to choose a suitablecomposition and heat treatment for sand castings. The mechanical properties have been evaluated varying the contentof Mg, covering the alloys A356 and A357. The effect of heat treatment has been studied in alloy A356 varyingthe emperature and time of the precipitation heat treatment, while the dissolution treatment was kept constant.Several quality indexes have been defined which combine tensile strength, yield strength, tensile strength andelongation in order to select an adequate chemical composition and heat treatment for each application.


Aitor Loizaga, Esther De la Fuente, Andrea Niklas, J. Barrenengoa, Ana Isabel Fernández Calvo 


A356 and A357 aluminium alloys; Mechanical properties; Effect of Mg content; Effect of heat treatment T6


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