Anisotropic Transformation Strain and Its Consequences on Distortion during Austenitization

    Volume 1, Issue 1

    ISSN: 2165-3992

    CODEN: MPCOAD

    Published Online: 1 July 2012

    Page Count: 23


    Şimşir, Caner
    Atilim Univ., Dept. of Manufacturing Engineering, Ankara,

    Stiftung Institut für Werkstofftechnik (IWT), Bremen,

    Lübben, Thomas
    Stiftung Institut für Werkstofftechnik (IWT), Bremen,

    Hunkel, Martin
    Stiftung Institut für Werkstofftechnik (IWT), Bremen,

    Hoffmann, Franz
    Stiftung Institut für Werkstofftechnik (IWT), Bremen,

    Zoch, Hans-Werner
    Stiftung Institut für Werkstofftechnik (IWT), Bremen,

    (Received 19 November 2011; accepted 16 April 2012)

    Abstract

    The distribution of segregations, which is introduced in the continuous casting process and modified during succeeding manufacturing steps, is considered as an important “distortion potential carrier” for chemically banded steels. This article presents a recently developed mathematical model for integration of the effect of prior forming and cutting operations into heat-treatment simulations by considering “anisotropic transformation strain (ATS).” The model was justified experimentally by simulating the heating and austenitization of dilatometer specimens machined from the forged discs with distinct orientations with respect to the banded microstructure. After the verification, it is used in conjunction with former experimental work to demonstrate that the distribution of fiber flow is one of the important reasons of the dishing of carburized discs. The model provides promising results for process chain simulation to predict the heat-treatment distortion that cannot be predicted with currently available models.


    Paper ID: MPC104556

    DOI: 10.1520/MPC104556

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    Author
    Title Anisotropic Transformation Strain and Its Consequences on Distortion during Austenitization
    Symposium , 0000-00-00
    Committee A01