Intragranular deformation mechanisms during ambient-temperature creep in hexagonal close-packed metals

Tetsuya Matsunaga, Tatsuya Kameyama, Kohei Takahashi, Eiichi Sato

Research output: Contribution to journalArticle

24 Citations (Scopus)

Abstract

Intragranular deformation mechanisms were investigated for ambient-temperature creep of pure hexagonal close-packed (h.c.p.) metals, i.e. commercially pure titanium, pure magnesium and pure zinc, by transmission electron microscopy and electron back-scatter diffraction pattern mapping analysis. First, straightly aligned dislocation arrays were observed in all of the specimens. Second, although the Burgers vectors of (a) and several slip systems were observed, only one slip system was activated inside of each grain. Third, the deformation twins that form during creep hinder creep strain. Therefore, the dominant intragranular deformation mechanism of ambient-temperature creep is a planner slip of dislocations inside of a grain

Original languageEnglish
Pages (from-to)2865-2872
Number of pages8
JournalMaterials Transactions
Volume50
Issue number12
DOIs
Publication statusPublished - 2009 Dec 1

Keywords

  • Ambient-temperature creep
  • Dislocation structure
  • Magnesium
  • Titanium
  • Zinc

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Fingerprint Dive into the research topics of 'Intragranular deformation mechanisms during ambient-temperature creep in hexagonal close-packed metals'. Together they form a unique fingerprint.

  • Cite this