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A new micromechanical formulation of martensite kinetics driven by temperature and/or stress

Eine neue mikromechanische Formulierung der Martensit-Kinetik unter Temperatur- und/order Spannungsbelastung

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Summary

Martensitic transformation behavior of alloys is studied under the arbitrary action of a thermal and/or a triaxial mechanical load-stress state by solving a transformation kinetic equation presented recently by the same authors. Numerical and analytical solutions reveal that the transformation behavior is almost path-independent. Lines of constant volume fraction of martensite are nearly parallel in the stress-temperature plane. Some new analytical formulae for martensitic transformation kinetics are presented.

Übersicht

Es wird das Verhalten der martensitischen Umwandlung von Legierungen unter beliebiger thermischer und/oder dreiachsiger mechanischer Spannungsbelastung untersucht, indem eine neue Gleichung der Umwandlungskinetik gelöst wird. Diese Gleichung wurde vor kurzem von denselben Autoren vorgestellt. Die numerischen und die analytischen Lösungen zeigen, daß das Transformationsverhalten nahezu pfadunabhängig ist. Die Linien gleicher Volumsfraktion von Martensit sind nahezu parallel im Spannungs-Temperatur-Diagramm. Es werden auch einige neue analytische Formeln für die Umwandlungskinetik von Martensit präsentiert.

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Authors and Affiliations

  1. Institute of Mechanics, University for Mining and Metallurgy, A-8700, Leoben, Austria

    E. R. Oberaigner

  2. Christian Doppler Laboratory for Micromechanics of Materials, University for Mining and Metallurgy, A-8700, Leoben, Austria

    F. D. Fischer

  3. Department of Aerospace Engineering, Tokyo Metropolitan Institute of Technology, J-191, Hino/Tokyo, Japan

    K. Tanaka

Authors
  1. E. R. Oberaigner
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  2. F. D. Fischer
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  3. K. Tanaka
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Oberaigner, E.R., Fischer, F.D. & Tanaka, K. A new micromechanical formulation of martensite kinetics driven by temperature and/or stress. Arch. Appl. Mech. 63, 522–533 (1993). https://doi.org/10.1007/BF00804754

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  • DOI: https://doi.org/10.1007/BF00804754

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