Effect of the Metallurgical State of Austenite on the Microtexture Properties of the Bainitic Transformation in a Low Alloy Steel

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The effect of the metallurgical state of austenite (undeformed vs. deformed vs. deformed + recrystallised) on the properties of the austenite to bainite transformation were investigated thanks to thermal (Gleeble simulations) and thermomechanical (hot torsion) treatments. No obvious influence of the state of austenite was found, using electron backscatter diffraction, on the resulting microtexture. Advantages and drawbacks of using misorientation angle histograms vs. axis-angle pair distribution are discussed regarding investigations of local variant selection. For an austenite grain size higher than about 50 µm, a strong effect of the transformation temperature was evidenced, bainite formed at lower temperature (530°C) exhibiting a microtexture close to that of lath martensite in the same steel.

Info:

Periodical:

Solid State Phenomena (Volumes 172-174)

Edited by:

Yves Bréchet, Emmanuel Clouet, Alexis Deschamps, Alphonse Finel and Frédéric Soisson

Pages:

772-777

DOI:

10.4028/www.scientific.net/SSP.172-174.772

Citation:

S. Lubin et al., "Effect of the Metallurgical State of Austenite on the Microtexture Properties of the Bainitic Transformation in a Low Alloy Steel", Solid State Phenomena, Vols. 172-174, pp. 772-777, 2011

Online since:

June 2011

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$35.00

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