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Characterization of Ultra-fine Grained and Nanocrystalline Materials Using Transmission Kikuchi Diffraction
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A correlative approach to segmenting phases and ferrite morphologies in transformation-induced plasticity steel using
Azdiar A Gazder1, Fayez Al-Harbi2, Hendrik Th Spanke2
1Electron Microscopy Centre, University of Wollongong, New South Wales 2500, Australia.
Abstract:
Using a combination of electron back-scattering diffraction and energy dispersive X-ray spectroscopy data, a segmentation procedure was developed to comprehensively distinguish austenite, martensite, polygonal ferrite, ferrite in granular bainite and bainitic ferrite laths in a thermo-mechanically processed low-Si, high-Al transformation-induced plasticity steel. The efficacy of the ferrite morphologies segmentation procedure was verified by transmission electron microscopy. The variation in carbon content between the ferrite in granular bainite and bainitic ferrite laths was explained on the basis of carbon partitioning during their growth.
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