Three-dimensional morphology of ferrite formed in association with inclusions in low-carbon steel |
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| Affiliation: | 1. Department of Materials Science and Engineering, Delft University of Technology, Mekelweg 2, 2628 CD Delft, the Netherlands;2. Tata Steel Europe, 1970 CA IJmuiden, the Netherlands;3. STFC, ISIS, Rutherford Appleton Laboratory, Chilton, Oxfordshire, OX11 0QX, United Kingdom;4. Department of Applied Physics, Eindhoven University of Technology, PO Box 513, 5600 MB Eindhoven, the Netherlands;5. Department of Electrical Energy, Metals, Mechanical Constructions and Systems, Ghent University, Tech Lane Ghent Science Park – Campus A, Technologiepark 903, 9052 Zwijnaarde, Ghent, Belgium;6. Department of Radiation Science and Technology, Faculty of Applied Sciences, Delft University of Technology, Mekelweg 15, 2629 JB Delft, the Netherlands |
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| Abstract: | Three-dimensional (3D) morphology and growth behavior of ferrite formed at intragranular inclusions in low-carbon steel were studied by serial sectioning and computer-aided visualization. The specimens taken from the weld deposit were austenitized and isothermally reacted for varying times. The length, width, and thickness of ferrite plates were measured from 3D-reconstructed images. From the length-to-width ratio, the morphology of ferrite is likely to be a lath rather than a plate in this alloy. Multivariant ferrite plates (or laths) were observed to be nucleated at inclusions and grow in the directions close to 〈110〉γ with habit planes near {111}γ, probably keeping a fixed orientation relationship with austenite. |
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