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

Kenji Higashda, Masaki Tanaka

Research output: Contribution to journalReview article

3 Citations (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 of brittle-to-ductile transition (BDT) is demonstrated using a simple model based on dislocation dynamics and the theory of crack-tip 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)195-200
Number of pages6
JournalTetsu-To-Hagane/Journal of the Iron and Steel Institute of Japan
Volume97
Issue number4
DOIs
Publication statusPublished - May 13 2011

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Physical and Theoretical Chemistry
  • Metals and Alloys
  • Materials Chemistry

Fingerprint Dive into the research topics of 'Mechanism of brittle-to-ductile transition understood by the interaction between a crack and dislocations'. Together they form a unique fingerprint.

  • Cite this