Abstract
The effect of silver addition on the microstructure and mechanical properties of the 7055 Al alloy was investigated. Mechanical properties of various alloys used in this study are correlated with the formation of constituent particles and microstructural changes of fine precipitates. According to the experiment, tensile strength of the 7055 Al alloy decreased by the addition of silver, although silver additions were observed to refine η′. The low tensile strength is attributed to the relatively low number density of η′ in silver-bearing alloys in which a large amount of hardening elements, such as Zn and Mg, are consumed to form silver-bearing constituent particles.
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