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Shear Localization and Damage in AA5754 Aluminum Alloy Sheets

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Abstract

In this article, we study the Portevin-Le Chatelier (PLC) bands and their influences on strain localization and fracture in continuous cast (CC) AA5754 aluminum sheets. Three types of tensile tests are conducted: (1) tensile samples are pulled directly to fracture at 223 K, (2) tensile samples are pulled at 223 K to initiate diffuse necking followed by unloading and reloading to fracture at room temperature, and (3) tensile samples are pulled at 223 K to localized necking and unloaded followed by reloading to fracture at room temperature. Furthermore, in situ V-bending test coupled with deformation mapping using digital image correlation is used to study damage at large strains. The results show that PLC bands detect favorable geometrical sites for shear band initiation. The formation of shear bands precedes damage and damage is a consequence of shear band formation.

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Acknowledgments

Many valuable discussions with research personnel at General Motors R&D Center are gratefully acknowledged. The financial support of General Motors of Canada Ltd and the Natural Sciences and Engineering Research Council of Canada is gratefully acknowledged.

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Authors and Affiliations

  1. School of Welding Engineering Technology, Northern College, 140 Government Road East, Kirkland Lake, ON, Canada, P2N 3L8

    Jidong Kang

  2. Department of Materials Science and Engineering, McMaster University, 1280 Main street West, Hamilton, ON, Canada, L8S 4L7

    Jidong Kang, David S. Wilkinson & J. David Embury

  3. Department of Mechanical Engineering, McMaster University, 1280 Main street West, Hamilton, ON, Canada, L8S 4L7

    Mike Bruhis, Mukesh Jain & Pei Dong Wu

  4. Materials and Processes Lab, GM R&D Center, 30500 Mound Road, Warren, MI, 48090-9055, USA

    Raja K. Mishra & Anil K. Sachdev

Authors
  1. Jidong Kang
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  2. David S. Wilkinson
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  3. Mike Bruhis
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  4. Mukesh Jain
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  5. Pei Dong Wu
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  6. J. David Embury
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  7. Raja K. Mishra
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  8. Anil K. Sachdev
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Corresponding author

Correspondence to Jidong Kang.

Additional information

This article was presented at Materials Science & Technology 2007, Automotive and Ground Vehicles symposium held September 16-20, 2007, in Detroit, MI.

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Kang, J., Wilkinson, D.S., Bruhis, M. et al. Shear Localization and Damage in AA5754 Aluminum Alloy Sheets. J. of Materi Eng and Perform 17, 395–401 (2008). https://doi.org/10.1007/s11665-008-9224-6

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  • DOI: https://doi.org/10.1007/s11665-008-9224-6

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