日本金属学会誌

J. Japan Inst. Metals, Vol. 70, No. 7 (2006),
pp. 562-567

Texture Formation during High Temperature Compression Deformation in Al-3mass%Mg Alloy

Kazuto Okayasu and Hiroshi Fukutomi

Division of Materials Science and Engineering, Faculty of Engineering, Yokohama National University, Yokohama 240-8501

Abstract:

Uniaxial compression tests were conducted on Al-3 mass%Mg alloy under various amounts of strain, strain rates and temperatures. High temperature yielding phenomena are seen at the temperatures higher than 623 K and strain rates ranging from 1.0 × 10-4 s-1 to 1.0 × 10-3 s-1. Texture examination elucidated that fiber textures are constructed in all the deformation conditions. The main components of the fiber textures are {011} and {001}. The transition of the main component from {011} to {001} with an increase in strain is seen in some deformation conditions. It is considered that orientation stability for crystal slip deformation as well as the rapid recovery during the deformation of the grains close to {001} orientation made it possible to grow by consuming the other deformed grains with the orientations such as {011}, resulting in the development of {001} texture with an increase in strain. In addition, it is suggested that new grain formation in dynamic recrystallization also contribute the development of {001} texture.


(Received 2005/12/26)

Keywords:

texture, aluminum-magnesium alloy, solute atmosphere, high temperature deformation, electron back-scattered diffraction, dynamic recrystallization


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