Abstract
In the current study, a series of thermomechanical routes were used to produce different microstructures (i.e., ferrite and martensite) in low-carbon low alloy steels. The five-parameter grain boundary character distribution was measured for all microstructures. The thermomechanical processing route altered the texture of the fully ferritic microstructure and significantly influenced the anisotropy of the grain boundary character distribution. Generally, the population of (111) planes increased with an increase in the γ-fiber texture for the ferritic microstructure, but it did not change the shape of the grain boundary plane distribution at specific misorientations. The most commonly observed boundaries in the fully ferritic structures produced through different routes were {112} symmetric tilt boundaries with the Σ3 = 60 deg/[111] misorientation; this boundary also had a low energy. However, the grain boundary plane distribution was significantly changed by the phase transformation path (i.e., ferrite vs martensite) for a given misorientation. In the martensitic steel, the most populous Σ3 boundary was the {110} symmetric tilt boundary. This results from the crystallographic constraints associated with the shear transformation (i.e., martensite) rather than the low-energy interface that dominates in the diffusional phase transformation (i.e., ferrite).
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T. Watanabe: Trans Japan Inst Metals, 1986, vol. 27, pp. 73-82.
V. Randle: Acta Metall., 1999, vol. 47, pp. 4187-96.
H. Beladi, G.S. Rohrer, A.D. Rollett, V. Tari, P.D. Hodgson: Acta Mater., 2014, vol. 63, pp. 86-98.
H. Beladi, Q. Chao, G.S. Rohrer: Acta Mater., 2014, vol. 80, pp. 478-89.
H. Beladi, G.S. Rohrer: Acta Mater., 2013, vol. 61, pp. 1404-12.
H. Beladi, G.S. Rohrer: Metall. Mater. Trans. A, 2013, vol. 44, pp. 115-24.
D.Q. Bai, S. Yue, W. P. Sun and J.J. Jonas: Metall. Mater. Trans. A, 1993, vol. 24, pp. 2151-59.
K.J. Irvine: J of Iron Institute, 1967, pp. 161-67.
G.S. Rohrer, D.M. Saylor, B. El Dasher, B.L. Adams, A.D. Rollett, P. Wynblatt: Zeitschrift Für Metallkde., 2004, vol. 95, pp. 1-18.
R.K. Ray, J.J. Jonas: Inter. Mater. Rev., 1990, vol. 35, pp. 1-36.
G.J. Baczynski, J.J. Jonas, L.E. Collins, Metall. Mater. Trans. A, 1999, vol. 30, pp. 3045-54.
L Kestens, JJ Jonas: ASM Handbook, SL Semiatin, Ed., Metalworking: bulk forming, 2005, vol. 14A, pp. 685-700.ASM International, Materials Park,
H.K.D.H. Bhedeshia: Bainite in Steels, 2nd ed., IOM Communications Ltd., London, 2001.
R.E. Garcia, M.D. Vaudin: Acta Mater., 2007, vol. 55, pp. 5728-35.
B. Gale, R.A. Hunt and M. McLean: Philos. Mag., 1972, vol. 25, pp. 947-60.
J.P. Hirth and L. Lothe: Theory of Dislocations, 2nd ed., Krieger Publishing Company, Florida, 1982, pp. 274-366.
H. Beladi, N.T. Nuhfer, G.S. Rohrer: Acta Mater., 2014, vol. 70, pp. 281-89.
P.M. Kelly, A. Jostsons, R.G. Blake: Acta Mater., 1990, vol. 38, 1990, pp. 1075-81.
P.M. Kelly: Acta Metall., 1965, vol. 13, pp. 635-46.
F. Duflos, B. Cantor: Acta Metall., 1982, vol. 30, pp. 323-42.
A. Van Gent, F.C. Van Doorn, E.J. Mittermeijer: Metall. Trans. A, 1985, vol. 16, pp. 1371-84.
J.M. Chilton, C.J. Barton, G.R. Speich: J. Iron Steel Inst., 1970, vol. 208, pp. 184.
D.M. Saylor, A. Morawiec, G.S. Rohrer: Acta Mater., 2003, vol. 51, pp. 3675-86.
D.M. Saylor, B.S. El-Dasher, T. Sano, G.S. Rohrer: J Amer. Cer. Soc., 2004, vol. 87, pp. 670-76.
J. Li, S.J. Dillon, G.S. Rohrer: Acta Mater., 2009, vol. 57, pp. 4304-4311.
D.M. Saylor, B.S. El-Dasher, A.D. Rollett, G.S. Rohrer: Acta Mater., 2004, vol. 52, pp. 3649-55.
S.J. Dillon, G.S. Rohrer: Acta Mater., vol. 57, 2009, pp. 1-7.
Acknowledgments
The work at Deakin University was supported through grants provided by Australian Research Council. This work was carried out with the support of the Deakin Advanced Characterization Facility. G.S.R. acknowledges support from the ONR-MURI program (Grant No. N00014-11-0678) and the use of the Materials Characterization Facility at Carnegie Mellon University supported by Grant MCF-677785.
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Manuscript submitted March 28, 2016.
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Beladi, H., Rohrer, G.S. The Role of Thermomechanical Routes on the Distribution of Grain Boundary and Interface Plane Orientations in Transformed Microstructures. Metall Mater Trans A 48, 2781–2790 (2017). https://doi.org/10.1007/s11661-016-3630-4
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DOI: https://doi.org/10.1007/s11661-016-3630-4