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.8 Diameter distributions of T1-precipitates in the samples first natural aged for 60 days and then artificial-aged at 180°C for 28 h a, 52 h b