Transformation between nanocrystalline and amorphous phases in Zr-X Alloys during accumulative roll bonding

P. J. Hsieh, J. C. Huang, J. S.C. Jang, C. Y.A. Tsao

Research output: Contribution to journalArticlepeer-review

6 Scopus citations

Abstract

The nanocrystallization and amorphization processes in various Zr-X alloys during accumulative roll bonding (ARB) are explored. The gradual evolutions of nanocrystalline (nc) phase size, amorphous (amf) volume fraction, hardness, elastic modulus are characterized, and the mechanisms are explored. The initial structure refinement is achieved via shear band propagation and substructure subdivision, followed by interdiffusion and amorphization in the mantle region of the elemental nc phase, resulting in nc core sizes of 3-10 nm. Finally, the nc cores suddenly transform into the amorphous phase due to the high interfacial energy.

Original languageEnglish
Pages (from-to)351-354
Number of pages4
JournalJournal of Metastable and Nanocrystalline Materials
Volume24-25
DOIs
StatePublished - 2005

Keywords

  • Accumulative roll bonding
  • Amorphous phase
  • Nanocrystalline phase
  • Phase transformation
  • Zr based alloys

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