A multiscale approach for the deformation mechanism in pearlite microstructure: Numerical evaluation of elasto-plastic deformation in fine lamellar structures

Tetsuya Ohashi, Lidyana Roslan, Kohsuke Takahashi, Tomotsugu Shimokawa, Masaki Tanaka, Kenji Higashida

    研究成果: Contribution to journalArticle査読

    25 被引用数 (Scopus)

    抄録

    Elasto-plastic deformations in the microstructures of pearlite are studied by finite-element analyses. Various models for the lamellar structure are made and the material properties of cementite and ferrite are established. Deformation of a bare specimen of cementite is unstable immediately after the yield point, while cementite lamellae show some stability when they are layered with ferrite. When higher values of yield stress and strain hardening are used for ferrite phase, cementite deforms well beyond the elastic range and the distribution of plastic strain is not concentrated. These results show that not only the layered structure but also the improved mechanical property of fine lamellae of ferrite contribute largely to stable deformation in the pearlite microstructure.

    本文言語英語
    ページ(範囲)214-220
    ページ数7
    ジャーナルMaterials Science and Engineering A
    588
    DOI
    出版ステータス出版済み - 12 20 2013

    All Science Journal Classification (ASJC) codes

    • 材料科学(全般)
    • 凝縮系物理学
    • 材料力学
    • 機械工学

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