Bulk texture evolution of nanolamellar Zr-Nb composites processed via accumulative roll bonding

J. S. Carpenter, T. Nizolek, R. J. McCabe, M. Knezevic, S. J. Zheng, B. P. Eftink, J. E. Scott, S. C. Vogel, T. M. Pollock, N. A. Mara, I. J. Beyerlein

Research output: Contribution to journalArticlepeer-review

85 Scopus citations

Abstract

It was recently demonstrated that bulk two-phase 50/50 Zr-Nb nanolayered composites with 90 nm individual layers can be fabricated from an initial coarse-layered composite with 1 mm layers via the severe plastic deformation process of accumulative roll bonding. During the deformation, the Zr phase retained its hcp crystal structure and the Zr-Nb interface remained sharp. Here we use a combination of neutron diffraction and dislocation-based polycrystal plasticity constitutive modeling to assess the evolution of texture and deformation mechanisms over a four order-of-magnitude range in layer thickness. The phase textures in the nanocomposite strongly deviate from that of Zr or Nb rolled in monolithic form, becoming highly peaked and intense. The model suggests that texture development in the Nb phase is associated with multiple slip and contributions from both {1 1 2}1 1 0 slip and {1 1 0}1 1 0 slip. In the Zr phase the model suggests that the texture develops due to a predominance of prismatic a and basal a slip.

Original languageEnglish (US)
Pages (from-to)97-108
Number of pages12
JournalActa Materialia
Volume92
DOIs
StatePublished - Jun 15 2015
Externally publishedYes

Bibliographical note

Publisher Copyright:
© 2015 Acta Materialia Inc.

Keywords

  • Accumulative roll bonding
  • Composites
  • Neutron diffraction
  • Severe plastic deformation
  • Texture

Fingerprint

Dive into the research topics of 'Bulk texture evolution of nanolamellar Zr-Nb composites processed via accumulative roll bonding'. Together they form a unique fingerprint.

Cite this