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Strain Localization During Compressive Deformation of Mg-Gd Alloy

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Abstract

Strain localization occurring at advanced deformation under compression of Mg-0.28 at. pctGd alloy has been studied. The strain localization develops in previously twinned microstructure in the form of shear bands (SBs) represented by narrow, heterogeneous zones of localized deformation. The onset of shear banding appears when the work hardening capacity of the material is exhausted. SBs are promoted by activation of high-stress contraction and double twins and are 18 pct harder than the surrounding parent material. It is shown that the development of strain localization delays the failure, which is attributed to the strengthening effect of SBs.

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Financial support from Natural Sciences and Engineering Research Council of Canada (NSERC) and GM Canada under the NSERC-GM CRD grant: “Origins of strength and ductility in Mg-RE solid solutions” is acknowledged.

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The authors declare that they have no conflict of interest.

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Authors and Affiliations

  1. Faculty of Non-Ferrous Metals, AGH-University of Science and Technology, 30-059, Cracow, Poland

    A. Kula

  2. Academic Centre for Materials and Nanotechnology, AGH-University of Science and Technology, 30-059, Cracow, Poland

    T. Tokarski

  3. Materials Science and Engineering, McMaster University, Hamilton, L8S 4M1, Canada

    M. Niewczas

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  1. A. Kula
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  2. T. Tokarski
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  3. M. Niewczas
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Correspondence to M. Niewczas.

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Manuscript submitted January 16, 2020.

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Kula, A., Tokarski, T. & Niewczas, M. Strain Localization During Compressive Deformation of Mg-Gd Alloy. Metall Mater Trans A 51, 3742–3748 (2020). https://doi.org/10.1007/s11661-020-05815-z

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