Relation between young’s modulus and elastic stiffness in ferritic steels

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    Abstract

    In pure iron, the Young’s modulus ratio E100/Ehkl in single crystal is expressed as follows as a function of the orientation parameter Γ: E100/Ehkl=1–1.6063Γ. Under the condition that this relationship stands up on commercial ferritic and martensitic steels with various chemical composition and Poisson’s ratio is also identical at 0.291, the elastic stiffness cij was calculated as follows in connection with Young’s modulus Ep of poly crystal ferritic steels: c11=1.0970Ep, c12=0.6477Ep, c44=0.5424Ep. As a result, the elastic stiffness ratio c12/c44 and the anisotropy parameter Ai (=2c44/(c11–c12)) are given at 1.194 and 2.414 independent on the value of Ep, respectively. The contrast factor Ch00 and the parameter q, that are required for the dislocation analysis by the modified Williamson-Hall method, are represented as follows as a function of the screw component S in dislocation: Ch00=0.263+0.044×S and q=1.382+1.27×S.

    Original languageEnglish
    Pages (from-to)867-870
    Number of pages4
    JournalTetsu-To-Hagane/Journal of the Iron and Steel Institute of Japan
    Volume106
    Issue number11
    DOIs
    Publication statusPublished - 2020

    All Science Journal Classification (ASJC) codes

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

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