Processing of Dilute Mg–Zn–Mn–Ca Alloy/Nb Multilayers by Accumulative Roll Bonding

Brandon Leu, Daniel J. Savage, Jiaxiang Wang, Md Ershadul Alam, Nathan A. Mara, M. Arul Kumar, John S. Carpenter, Sven C. Vogel, Marko Knezevic, Ray Decker, Irene J. Beyerlein

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Recent advancements in the severe plastic deformation process called accumulative roll bonding (ARB) can help to address the long-standing need for manufacturing lightweight, high-strength Mg sheet materials. However, the fabrication of Mg alloy-based laminates via ARB remains a challenge due to the intrinsically poor formability of Mg. Herein, it is shown that Mg-based composite laminates with refined layers can be fabricated via several room-temperature ARB cycles with appropriate intermediate annealing and alloy selection. The final laminates made here consist of equal volume fractions of a dilute Mg–Zn–Mn–Ca alloy phase and a pure Nb phase with fine 150 μm layer thicknesses. Deformation texture evolution in both phases within the composite is analyzed via neutron diffraction measurements taken at different stages in the process. The analysis suggests that the annealing step recrystallizes the Mg-alloy phase. It is also shown that for both phases, the stabilized deformation textures within the composite correspond to the classic stable textures of the individual constituents. Polycrystal texture modeling implies that {10–12} <-1011> extension twinning developed in the Mg alloy during rolling.

Original languageEnglish (US)
Article number1900673
JournalAdvanced Engineering Materials
Issue number1
StatePublished - Jan 1 2020

Bibliographical note

Funding Information:
B.L. would like to acknowledge financial support from the Department of Defense (DoD) through the National Defense Science and Engineering Graduate (NDSEG) Fellowship Program. D.J.S. gratefully acknowledges the support through the UNH Dissertation Year Fellowship. M.E.A., M.K., R.D., and I.J.B. gratefully acknowledge the support from the U.S. National Science Foundation (NSF) under grant nos. CMMI-1728224 (UCSB) and CMMI-1727495 (UNH). M.A.K. acknowledges the financial support from the U.S. Department of Energy, Office of Basic Sciences Project FWP 06SCPE401. The microscopy was performed at the Electron Microscopy Laboratory user facility at Los Alamos National Laboratory. This work has benefitted from the use of the Los Alamos Neutron Science Center (LANSCE) at Los Alamos National Laboratory. Los Alamos National Laboratory is operated by Triad National Security, LLC, for the National Nuclear Security Administration of the U.S. Department of Energy under contract number 89233218NCA000001.

Publisher Copyright:
© 2019 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim


  • Mg-alloys
  • accumulative roll bonding
  • interfaces
  • recrystallization
  • textures


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