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

Kenji Higashida, Masaki Tanaka

Research output: Contribution to journalReview article

1 Citation (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)704-709
Number of pages6
Journalisij international
Volume52
Issue number4
DOIs
Publication statusPublished - Apr 27 2012

All Science Journal Classification (ASJC) codes

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

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