SIGNIFICANCE OF THE UNIVERSAL THIRD POWER STRESS DEPENDENCE FOR THE STEADY-STATE CREEP RATE.

Zenji Horita, Terence G. Langdon

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    11 Citations (Scopus)

    Abstract

    There are two basic forms of equation relating the steady-state creep rate, epsilon , to the applied stress, sigma , with the stress incorporated either as sigma **n or as ( sigma minus sigma //o)**n degree where n and n//o are the appropriate stress exponents and sigma //o is a threshold or friction stress. The implications of these two relationships are examined and it is demonstrated that, although there are a range of values for (n,log//1//0A) lying on straight lines which may have different slopes for different materials, all lines pass through a unique point given by (n//o,log//1//0A//o) equal to (3,0), where A and A//o are the dimensionless constants in the two different equations for epsilon . It is concluded that there is a universal creep equation with a third power stress dependence which applies to all crystalline materials in the power-law creep regime.

    Original languageEnglish
    Title of host publicationUnknown Host Publication Title
    EditorsB. Wilshire, D.R.J. Owen
    PublisherPineridge Press Ltd
    Pages75-87
    Number of pages13
    Editionpt 1
    ISBN (Print)0906674379
    Publication statusPublished - Dec 1 1984

    Publication series

    Name
    Numberpt 1

    All Science Journal Classification (ASJC) codes

    • Engineering(all)

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