Abstract
In a low-alloyed multi-phase transformation-induced plasticity steel, solute carbon content in polygonal ferrite, bainitic ferrite, and martensite was characterized using site-specific atom probe tomography. Selected area diffraction patterns were obtained using transmission electron microscopy, and the geometric distortion thereof was determined. The results showed that the lattice distortion increased in a sequence of polygonal ferrite, lath-like bainitic ferrite, and martensite. This increasing distortion corresponded to an increase in carbon content of the phase.
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This project was supported and the JEOL JEM ARM200F was funded by the Australian Research Council (DP130101887 and LE120100104, respectively). The authors thank Dr. R.K.W. Marceau, Deakin University, for atom probe data acquisition.
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Xiong, Z., Mitchell, D.R.G., Saleh, A.A. et al. Tetragonality of bcc Phases in a Transformation-Induced Plasticity Steel. Metall Mater Trans A 49, 5925–5929 (2018). https://doi.org/10.1007/s11661-018-4932-5
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DOI: https://doi.org/10.1007/s11661-018-4932-5