Ferroelastic twin reorientation mechanisms in shape memory alloys elucidated with 3D X-ray microscopy

A. N. Bucsek, D. C. Pagan, L. Casalena, Y. Chumlyakov, M. J. Mills, A. P. Stebner

Research output: Contribution to journalArticlepeer-review

12 Scopus citations

Abstract

Three-dimensional (3D) X-ray diffraction methods were used to analyze the evolution of the load-induced rearrangements of monoclinic twin microstructures within bulk nickel–titanium specimens in 3D and across six orders of magnitude in length scales: changes in lattice plane spacings and orientations at the nanoscale, growth and nucleation of martensite twin variants at the microscale, and localization of plastic strain into deformation bands at the macroscale. Portions of the localized deformation bands were reconstructed in situ and in 3D. Analyses of the data elucidate the sequence of twin rearrangement mechanisms that occur within the propagating localized deformation bands, connect these mechanisms to the texture evolution, and reveal the effects of geometrically necessary lattice curvature across the band interfaces. The similarities between shear bands and localized deformation bands in twin reorientation are also discussed. These findings will guide future researchers in employing twin rearrangement in novel multiferroic technologies, and they demonstrate the strength of 3D, multiscale, in situ experiments to improve our understanding of complicated material behaviors and to provide opportunities to advance our abilities to model them.

Original languageEnglish (US)
Pages (from-to)897-928
Number of pages32
JournalJournal of the Mechanics and Physics of Solids
Volume124
DOIs
StatePublished - Mar 2019

Bibliographical note

Funding Information:
ANB acknowledges the support provided by the National Science Foundation Graduate Research Fellowship Program under award DGE-1057607 . ANB and APS acknowledge support provided by the National Science Foundation under award CMMI-1454668 , Mechanics of Materials and Structures program. LC and MJM acknowledge support provided by the U.S. Department of Energy Office of Science under award DE-SC0001258 . This work is based upon research conducted at the Cornell High Energy Synchrotron Source (CHESS), which is supported by the National Science Foundation under awards DMR-1332208 and DMR-0936384 . ANB and APS acknowledge XSEDE resources under awards TG-MSS160032 and TG-MSS170002 . ANB also acknowledges Jette Oddershede and Margaret Koker for helpful discussions regarding nf-HEDM reconstructions.

Funding Information:
ANB acknowledges the support provided by the National Science Foundation Graduate Research Fellowship Program under award DGE-1057607. ANB and APS acknowledge support provided by the National Science Foundation under award CMMI-1454668, Mechanics of Materials and Structures program. LC and MJM acknowledge support provided by the U.S. Department of Energy Office of Science under award DE-SC0001258. This work is based upon research conducted at the Cornell High Energy Synchrotron Source (CHESS), which is supported by the National Science Foundation under awards DMR-1332208 and DMR-0936384. ANB and APS acknowledge XSEDE resources under awards TG-MSS160032 and TG-MSS170002. ANB also acknowledges Jette Oddershede and Margaret Koker for helpful discussions regarding nf-HEDM reconstructions.

Publisher Copyright:
© 2018 Elsevier Ltd

Keywords

  • Characterization tools
  • Ferroics
  • Shape-memory materials
  • Stimuli-responsive materials
  • Structure-property relationships

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