TTT diagram in heating

Pisolino
@pisolino-MeDWpH โ€ข Oct 26, 2024

HI all, i'm an italian student, i'm working on a fem metallurgical simulation of a ring ( AISI 4140) normalized after forging and then quenched. I'm having a problem gathering TTT diagrams for the heating part, the austenitization above A3 until i have 100% austenite and no more residual carbides. I only found a CHT (continuous heating trasformation). I need TTT to fit parameters of Leblond equation, especially the TAU parameter (delay time). Any suggestion? this is a strategical part because the amount of residual carbides after normalization changes the final result and can generate distortion.

thx you all

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  • Lisson

    @lisson-P8J3wZ • May 31, 2011

    Hello!

    Very interesting what you are trying to do.
    It's a great coincidence, because I am trying to do the same simulation.

    I am a Mechanical Engineering (not Metallurgical) and I have had problems for getting quench distortions.
    I got a distortion case to try to reproduce it, but there is something wrong with my model.
    Maybe we could exchange information and try to do it.

    Send me an e-mail: <clipped by admin>

    Thanks.

    Lisson.