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Erschienen in:
2016 | OriginalPaper | Buchkapitel
Influence of chemical composition on aging property of 7204 aluminum alloy
verfasst von : Tadashi Minoda, Hideo Yoshida
Erschienen in: ICAA13 Pittsburgh
Verlag: Springer International Publishing
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The influence of the room temperature pre-aging (RTPA) conditions on the strength of the AA7204 aluminum alloy in T6 temper was changed by the zinc and magnesium contents. When both the zinc and magnesium contents were the lowest and the RTPA was omitted, the strength became the lowest because the aging rate during artificial aging decreased and a nonhomogeneous precipitation of the η′-phase occurred. On the other hand, the η′-phase became finer and the strength of the T6 temper increased as the RTPA was longer and higher. Also, the two-step artificial aging resulted in a higher strength. Furthermore, the RTPA influence on the strength of the T6 temper decreased with the increasing zinc and magnesium contents, and it almost disappeared when both the zinc and magnesium contents were maximum values.