自然时效对<strong>Al-2.95Cu-1.55Li-0.57Mg-0.18Zr</strong>合金<strong>160℃</strong>人工时效的影响

自然时效对Al-2.95Cu-1.55Li-0.57Mg-0.18Zr合金160℃人工时效的影响

巩向鹏, 伍翠兰, 罗世芳, 沈若涵, 鄢俊

Effect of Natural Aging on Artificial Aging of an Al-2.95Cu-1.55Li-0.57Mg-0.18Zr Alloy at 160^oC

GONG Xiangpeng, WU Cuilan, LUO Shifang, SHEN Ruohan, YAN Jun

图9 160℃双级时效第二处峰值(192 h)试样的HAADF-STEM像

Fig.9 HAADF-STEM images of the second-peak-aged T66 sample at 192 h
(a) morphology of precipitates viewed along the [001]_Al direction (Inset is the atomic-resolution HAADF image of a lath-like S precipitate)
(b) morphology of T₁ precipitates viewed along [110]_Al direction (Inset is the atomic-resolution HAADF image of a T₁ precipitate)