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Texture Weakening and Grain Refinement by High Speed Rolling and Annealing of an AZ31 Magnesium Alloy

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Magnesium Technology 2017

Part of the book series: The Minerals, Metals & Materials Series ((MMMS))

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Abstract

High-speed rolling of 1000 m/min has been used to produce Mg AZ31 alloy sheets at an initial temperature of 100 °C with increasing reductions to generate different as-rolled microstructures. After a reduction of 30%, a heavily twinned and shear-banded microstructure was seen, while after a reduction of 49%, a partially dynamically recrystallized (DRXed) and twinned microstructure was observed. The as-rolled specimens were then annealed at temperatures from 200 to 500 °C. Texture weakening and grain refinement were achieved at both reductions during annealing by static recrystallization (SRX). However, the 49% reduction specimen showed a much higher kinetics of SRX and a higher rate of texture weakening, comparing to the 30% reduction specimen. The weakest texture achieved in the former was slightly lower than that in the latter, which indicates that texture weakening is more effective in the specimen with heavily twinned and shear-banded microstructure than that with partially DRXed and twinned microstructure. Nevertheless, the average size of the SRXed grains at the full recrystallization condition of the specimen after the reduction of 49% was only half of that after 30%.

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Authors and Affiliations

  1. Department of Mining and Materials Engineering, McGill University, 3610 Rue University, Montreal, QC, H3A 0C5, Canada

    Jing Su & Stephen Yue

Authors
  1. Jing Su
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  2. Stephen Yue
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Correspondence to Jing Su .

Editor information

Editors and Affiliations

  1. Arizona State University , Tempe, Arizona, USA

    Kiran N. Solanki

  2. Lund University , Lund, Skåne Län, Sweden

    Dmytro Orlov

  3. Structural Materials Unit, National Inst for Materials Sci Structural Materials Unit, Tsukuba, Ibaraki, Japan

    Alok Singh

  4. IND LLC , South Jordan, Utah, USA

    Neale R. Neelameggham

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© 2017 The Minerals, Metals & Materials Society

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Su, J., Yue, S. (2017). Texture Weakening and Grain Refinement by High Speed Rolling and Annealing of an AZ31 Magnesium Alloy. In: Solanki, K., Orlov, D., Singh, A., Neelameggham, N. (eds) Magnesium Technology 2017. The Minerals, Metals & Materials Series. Springer, Cham. https://doi.org/10.1007/978-3-319-52392-7_76

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