Texture and anisotropy of the mechanical properties of an Al-Mg-Li-Zn-Sc-Zr alloy

• Published in: Russian metallurgy Metally Vol. 2008; no. 5; pp. 406 - 412
• Main Authors: Il’in, A. A., Zakharov, V. V., Betsofen, M. S., Osintsev, O. E., Rostova, T. D.
• Format: Journal Article
• Language: English
• Published: Dordrecht SP MAIK Nauka/Interperiodica 01.10.2008; Springer Nature B.V
• Subjects: Alloy development; Alloys; Aluminum base alloys; Anisotropy; Chemistry and Materials Science; Materials Science; Mechanical properties; Metallic Materials; Metallurgy; Rolling texture; Solid solutions; Surface layer; Texture; Yield strength; 61.66.Dk
• ISSN: 0036-0295; 1555-6255; 1531-8648
• DOI: 10.1134/S003602950805008X

The formation of rolling texture in the α solid solution and the δ′ phase in various sections of 1424 (Al-Mg-Li-Zn-Sc-Zr) alloy sheets 1.6–8 mm thick is studied using pole and inverse pole figures. The textures of the α solid solution and δ′ phase are shown to be characterized by similar changes in the orientations across the sheets. The medium layer in the sheets has a two-component {011}〈211〉 + {135}〈211〉 texture with the predominant first component. The anisotropy in the mechanical properties of the alloy sheets is characterized by a high yield strength and a low plasticity in the longitudinal and transverse directions as compared to direction at an angle of 45° to the rolling direction. A model for the calculation of the anisotropy in the yield strength of the alloy is proposed; it takes into account the texture in the alloy, the ratio of the volumes of the α solid solution and δ′ phase, and their relative strength.