Characterization of Al-Li 2099 extrusions and the influence of fiber texture on the anisotropy of static mechanical properties

摘要: Abstract The development of aluminum–lithium alloys for aerospace applications requires a thorough understanding how processing and product geometry impact their microstructure, texture mechanical properties. anisotropy the properties is in part related to deformation formed during thermo-mechanical processing. In this study, two different extrusions Al–Li 2099 T83 were characterized, cylindrical extrusion an integrally stiffened panel (ISP). A decrease tensile was observed from longitudinal direction transverse with minimum 45° direction, magnitude which depends on location extrusions. 〈111〉 fiber prominent most locations smaller intensity 〈100〉 component. Rolling textures ISP that have larger cross sectional aspect ratio. Variations strength as function correlate well texture. On other hand, our findings show absence correlation between Taylor factor anisotropy. These results suggest may be controlled by volume fraction T1 precipitates could itself