Aging Precipitation of Al-Mg-Si Alloys with Additions of Ag and Cu

Abstract:

In this study, the aging behaviour of several Al-Mg-Si alloys (Al-Mg-Si-Cu , Al-Mg-Si-Ag and Al-Mg-Si-Cu-Ag) has been investigated by hardness tests and TEM observations. Comparing the age-hardening rate in the early period of these alloys, the alloys with Cu or/and Ag addition are faster than that of the base alloy, and the aging time to reach the maximum hardness of the alloys with Cu or/and Ag addition is shorter than that of the base alloy.Therefore the aging behaviour of that alloys has been investigated by TEM observations to understand the effect of Cu, Ag and Cu+Ag additions on aging precipitation.

• Periodical: Materials Science Forum (Volumes 794-796)
• Pages: 981-984
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.794-796.981
• Online since: June 2014
• Authors: Masaya Nishikubo, Kenji Matsuda*, Yoshihisa Oe, Jyunya Nakamura, Susumu Ikeno
• Keywords: Age-Hardening, Al-Mg-Si, Copper, HRTEM, Precipitates, Silver

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