Rare Metals

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Texture evolution behavior and anisotropy of 2A97 Al–Li alloy during recrystallization at elevated temperature

  • Dong Wang
  • Chong Gao
  • Hong-Yun Luo
  • Yong-Hong Yang
  • Yue Ma
Article
  • 37 Downloads

Abstract

2A97 Al–Li alloy was cold-rolled to 2 mm and then thermally exposed at different temperatures for 1 h and at 723 K for different time, respectively. The texture evolution behavior and the anisotropy of 2A97 Al–Li alloy were investigated. The result shows that the {001} 〈120〉 and {011} 〈233〉 textures are the dominant recrystallization texture. The {124} 〈211〉 texture is the final recrystallization texture. In case of low-temperature thermal exposure (473, 573 K), the {011} 〈211〉 texture is aggregated to the {112} 〈111〉 and {123} 〈634〉 textures. During the recrystallization at 723 K, the {001} 〈110〉, {111} 〈112〉 and {011} 〈100〉 textures are the intermediate transition grain orientations. The concurrent precipitation of Al20Cu2Mn3 and Al3Zr results in the occurrence of unusually sharp {011} 〈233〉 and {001} 〈120〉 texture components during recrystallization. The alloy with both recrystallization and deformation texture possesses the smallest anisotropic, and the texture is the direct reason that results in the anisotropy.

Keywords

Al–Li alloy 2A97 Crystallographic texture Texture evolution Anisotropy 

Notes

Acknowledgements

This study was financially supported by the National Natural Science Foundation of China (Nos. U1537212, 51471019 and 51271011) and the National Key Research and Development Program of China (No. 2016YFB0300901).

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Copyright information

© The Nonferrous Metals Society of China and Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  1. 1.School of Materials Science and EngineeringBeihang UniversityBeijingChina
  2. 2.China Alco Research Institute of Science and TechnologyBeijingChina
  3. 3.Xi’an Aerospace Propulsion InstituteXi’an National Civil Aerospace Industrial BaseXi’anChina

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