{112} {111} Twinning during ω to body-centered cubic transition

S. Q. Wu, D. H. Ping, Y. Yamabe-Mitarai, W. L. Xiao, Y. Yang, Q. M. Hu, G. P. Li, R. Yang

研究成果: Article査読

50 被引用数 (Scopus)

抄録

We propose an x-lattice mechanism that is irrelevant to dislocation behaviors for a popular twinning ({112} {111}-type) system in body-centered-cubic (bcc) metals and alloys. The twinning process is dependent on the reverse transformation of ω (hexagonal) → bcc. The driving force of the twinning is attributed to the instability of a high density of nanoscale metastable ω precursors, and the mechanism has been experimentally and theoretically confirmed in bcc-Ti alloys with the {112} {111}-type twin formed under conditions free of external stress and internal strain. The ω-lattice mechanism involves bcc lattice shuffling only, thus can be applied to all bcc metals and alloys.

本文言語English
ページ(範囲)122-128
ページ数7
ジャーナルActa Materialia
62
1
DOI
出版ステータスPublished - 2014 1
外部発表はい

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • セラミックおよび複合材料
  • ポリマーおよびプラスチック
  • 金属および合金

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