Crystallographic selection rule for the propagation mode of microstructurally small fatigue crack in a laminated Ti-6Al-4V alloy: Roles of basal and pyramidal slips

Akira Maenosono, Motomichi Koyama, Yoshihisa Tanaka, Shien Ri, Qinghua Wang, Hiroshi Noguchi

研究成果: Article査読

15 被引用数 (Scopus)

抄録

We investigated the microstructurally small fatigue crack growth (FCG) in a fully laminated Ti-6Al-4V alloy. Basal slip only causes Mode II FCG, which is the predominant FCG mechanism in the present alloy. However, when the basal plane was aligned approximately parallel to the notch/crack surface, Mode I or II FCG was activated by pyramidal slip. When a single pyramidal slip system was activated, Mode II FCG on the pyramidal slip also occurred. The shear stress on the basal plane strongly depends on the geometrical relationship between the basal plane and the notch/crack alignment, which caused scatter in the fatigue life.

本文言語English
論文番号105200
ジャーナルInternational Journal of Fatigue
128
DOI
出版ステータスPublished - 2019 11月

ASJC Scopus subject areas

  • モデリングとシミュレーション
  • 材料科学(全般)
  • 材料力学
  • 機械工学
  • 産業および生産工学

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