Texture analysis of L12 Al66Mn3Ti25 intermetallic compound deformed at high temperatures

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The authors investigated the deformation characteristics and microstructure change of L1[sub 2] Al[sub 66]Mn[sub 9]Ti[sub 25] by high temperature uniaxial compression tests. Three regimes appeared in the dynamics restoration process, depending on the flow stress level. When the flow stress is higher or lower, dynamic recovery is the dominant dynamic restoration process, while dynamic recrystallization is predominant at the intermediate stresses. Texture examination showed that three kinds of fiber texture developed corresponding to the difference in the dynamic restoration process. Evaluation of the pole figure suggested that the main components of the texture are close to [110], [110] + [111] and [111] for higher, intermediate and lower stress regimes, respectively. In this paper, crystallographic characteristics of the textures formed in the lower and higher stress regimes are examined by calculating the orientation distribution function, in order to understand the mechanism of texture formation.

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