Abstract
The mechanical properties of cast aluminum alloys can be affected by the delay in time involved between the stages of rapid cooling after solubilization (quenching) and aging. This effect was studied on samples from three different Al-Si alloys that were cast with a wide range of microstructures. It was found that the parameter that exerts the highest influence on the mechanical properties is the degree of microstructural refining, which is referred to dendrite arm spacing, as a finer structure enhances the strength and ductility. It was found that the yield strength and total elongation, and to a lesser extend the ultimate tensile strength, are affected by the delay in time. The material that was treated to the peak-aged condition was found to be more susceptible to the reduction in mechanical properties with the increase in the delay in time.
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Manuscript submitted December 28, 2010.
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Carrera, E., Alejandro González, J., Talamantes-Silva, J. et al. Effect of the Delay in Time Between Cooling and Aging in Heat-Treated Cast Aluminum Alloys. Metall Mater Trans B 42, 1023–1030 (2011). https://doi.org/10.1007/s11663-011-9534-1
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DOI: https://doi.org/10.1007/s11663-011-9534-1