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

Tetsuya Matsunaga, Tatsuya Kameyama, Kohei Takahashi, Eiichi Sato

研究成果: Article査読

25 被引用数 (Scopus)

抄録

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

本文言語English
ページ(範囲)2865-2872
ページ数8
ジャーナルMaterials Transactions
50
12
DOI
出版ステータスPublished - 2009 12

ASJC Scopus subject areas

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

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