The work reports an extensive experimental campaign for the aluminium lithium alloy Al-Li 2198-T851. Static, fatigue and fatigue crack-growth behaviour was investigated through tests on laboratory specimens manufactured along the longitudinal and transversal orientation with respect to the rolling direction. Microstructure was observed through macro-graphic evaluations and a Scanning Electron Microscope (SEM).

It was found that the 2198-T851 provided enhanced mechanical properties with respect to 2024-T3 for both transversal and longitudinal rolling direction. Nonetheless, a significantly different behaviour was observed for the transversal direction that provided mechanical performances from 5 to 30 % lower than those measured longitudinally.

这项工作报告了铝锂合金 Al-Li 2198-T851 的广泛实验活动。通过对沿轧制方向的纵向和横向制造的实验室试样进行试验，研究了静态、疲劳和疲劳裂纹扩展行为。通过宏观图形评估和扫描电子显微镜 (SEM) 观察微观结构。

发现 2198-T851 相对于 2024-T3 在横向和纵向轧制方向上都提供了增强的机械性能。尽管如此，在横向上观察到明显不同的行为，其提供的机械性能比纵向测量的低 5% 到 30%。