The effect of Ge addition on Al-3.5Cu-0.4Mg (wt.%) alloy

Z. Liao, S. Li, Z. Zheng, B. Cai, S. Zhong, X. Luo

Research output: Contribution to journalArticlepeer-review

13 Citations (Scopus)


A trace (0.2 wt.%) addition of Ge significantly increased both the strength and elongation of Al–3.5Cu–0.4 Mg alloy. An aged Al–3.5Cu–0.4 Mg–0.2Ge (wt.%) alloy revealed good tensile properties after being exposed at 150 °C. Transmission electron microscopy observations showed that these properties are closely correlated to the high-density microstructure of nanoscale precipitates and the good coarsening resistance of those precipitates; Ge stimulated the formation of nanoscale precipitates and suppressed the formation of S′ precipitates in aged Al–3.5Cu–0.4 Mg–0.2Ge (wt.%) alloy.
Original languageEnglish
Pages (from-to)447-450
JournalScripta Materialia
Issue number7
Publication statusPublished - 2012


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