M. Maniruzzaman, E. Wallhagen, R. D. Sisson, Worcester Polytechnic Institute, Worcester, MA
Aging of aluminum alloys is done to improve the alloy strength and other mechanical properties. The strengthening mechanism during aging is the nucleation of various precipitates and their growth, which primarily depends on the cooling rate, aging time and temperature as well as the alloy composition. In this study several 319 based (Al-Cu-Mg-Si) cast aluminum alloys are used to investigate the aging response of these alloys. A series of tensile tests is performed to determine the yield and tensile strengths of the alloy aged at selected aging temperatures and times. The effects of Cu and Mg concentrations on the aging response of the alloy are also presented and discussed.
Summary: Aging of aluminum alloys is done to improve the alloy strength and other mechanical properties. The strengthening mechanism during aging is the nucleation of various precipitates and their growth, which primarily depends on the cooling rate, aging time and temperature as well as the alloy composition. In this study several 319 based (Al-Cu-Mg-Si) cast aluminum alloys are used to investigate the aging response of these alloys. A series of tensile tests is performed to determine the yield and tensile strengths of the alloy aged at selected aging temperatures and times. The effects of Cu and Mg concentrations on the aging response of the alloy are also presented and discussed.
