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

Kenji Higashida, Masaki Tanaka

    Research output: Contribution to journalReview articlepeer-review

    4 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 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 - 2012

    All Science Journal Classification (ASJC) codes

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

    Fingerprint

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

    Cite this