The present work describes the route to develop an optimized T6 heat treatment applied to an automotive suspension arm diecast at semi-solid state with an AlSi7Cu3Mg secondary alloy by Swirled Enthalpy Equilibration Device process. The influence of time and temperature during solution heat treatment on the microstructure and mechanical properties is investigated. The spheroidization of eutectic Si, the progressive dissolution of Cu-rich compounds and the hardness variation of the alloy are observed and systematically quantified. Finally, the effects of temperature and time during artificial ageing are studied.
Development of thixotropic Al suspensions - New heat treatments for semi solid die castings
CAPUZZI, STEFANO;FERRARO, STEFANO;TIMELLI, GIULIO;BONOLLO, FRANCO
2013
Abstract
The present work describes the route to develop an optimized T6 heat treatment applied to an automotive suspension arm diecast at semi-solid state with an AlSi7Cu3Mg secondary alloy by Swirled Enthalpy Equilibration Device process. The influence of time and temperature during solution heat treatment on the microstructure and mechanical properties is investigated. The spheroidization of eutectic Si, the progressive dissolution of Cu-rich compounds and the hardness variation of the alloy are observed and systematically quantified. Finally, the effects of temperature and time during artificial ageing are studied.
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