Mechanism behind brittle-to-ductile transition understood by the interaction between a crack and dislocations

Kenji Higashida, Masaki Tanaka

研究成果: Contribution to journalReview article査読

2 被引用数 (Scopus)

抄録

Fundamental mechanism governing the fracture toughness of materials is reviewed in terms of a concept of the interaction between a crack and dislocations. The mechanism behind brittle-to-ductile transition (BDT) is demonstrated using a simple model based on dislocation dynamics and the theory of cracktip shielding by dislocations. The effects of dislocation mobility as well as dislocation sources on the BDT behavior are discussed, which enables us to understand the various factors such as grain refinement influencing fracture toughness.

本文言語英語
ページ(範囲)704-709
ページ数6
ジャーナルisij international
52
4
DOI
出版ステータス出版済み - 2012

All Science Journal Classification (ASJC) codes

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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