Complex Precipitation Sequences of Al-Cu-Li-(Mg) Alloys Characterized in Relation to Thermal Ageing Processes

Zhen Gao, Jiang-Hua Chen†, Shi-Yun Duan, Xiu-Bo Yang, Cui-Lan Wu

Fig.12 Diameter distributions of T1-precipitates in the samples first natural aged for 60 days and then artificial-aged at 200°C for 6 h a, 28 h b, 72 h c