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Formability of Magnesium Alloy AZ31B from Room Temperature to 125 °C Under Biaxial Tension

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Magnesium Technology 2017

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

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Abstract

Magnesium AZ31B sheets of 2 mm thickness were stretch formed using a 101.6 mm diameter punch at room temperature and subsequent increments from 25 to 125 °C. Surface strains were measured using a digital image correlation method in order to ensure that biaxial stretching was achieved. The punch height versus load curve was found to be the same for temperatures of 25 and for 50 °C, while at 75 °C the load for a given punch height was less. This difference seems to indicate a change in deformation mechanism between 50 and 75 °C. Electron Backscatter Diffraction (EBSD) was used to quantify features of the microstructure in the as-received and the strained specimens. Rather than a sudden transition from twinning to slip at low temperatures, it appears that twinning gradually decreases and slip activity increases as temperatures rise across the range from 25 to 125 °C. This confirms recent predictions found in the literature. The twin activity predominantly involves the formation of compression twins which rapidly transform further to create secondary twins for easier strain accommodation.

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Acknowledgements

This work was support by National Science Foundation award CMMI-1404771.

Author information

Authors and Affiliations

  1. Mechanical Engineering, Brigham Young University, 435 CTB, Provo, UT, 84602, USA

    Isaac Chelladurai, Andrew Orme & David T. Fullwood

  2. Manufacturing Engineering Technology, Brigham Young University, 265 CTB, Provo, UT, 84602, USA

    Mike P. Miles

  3. General Motors R&D, Warren, MI, 48090, USA

    John E. Carsley & Raj K. Mishra

  4. Theoretical Division, MS B16, Los Alamos National Laboratory, Los Alamos, NM, 87545, USA

    Irene J. Beyerlein

  5. Department of Mechanical Engineering, University of New Hampshire, Durham, NH, 03824, USA

    Marko Knezevic

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  1. Isaac Chelladurai
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  2. Andrew Orme
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  3. Mike P. Miles
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  4. David T. Fullwood
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  5. John E. Carsley
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Corresponding author

Correspondence to Isaac Chelladurai .

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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Chelladurai, I. et al. (2017). Formability of Magnesium Alloy AZ31B from Room Temperature to 125 °C Under Biaxial Tension. 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_91

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