Abstract
To investigate microstructural evolution and its effects on the deformation behaviors of cold-rolled 10Mn1.5Al TRIP steel, a series of intercritical annealing treatments with various holding times from 3 minutes to 48 hours were conducted. With the increase of the holding time from 3 minutes to 12 hours, the elongation was improved from 15 to 42 pct, while the tensile strength was only reduced from 1210 to 1095 MPa; the strength–ductility combination thus exceeded 45 GPa pct. Austenite was found to coexist with martensite within deformed grains, which reduced the strain concentration at the interface. The austenite transformation fraction, as measured from the {220} peaks, after 3 minutes annealing was half that after 12 hours annealing. This is an indication that the slip systems were more easily activated in the micro-scaled grains compared with nano-scaled grains. Therefore, although the stability of austenite would have increased during annealing, size-induced slip suppression was reduced. Thus, more strain was accommodated in the austenite, facilitating a greater strain-induced transformation and better ductility.
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P.J. Gibbs, E. De Moor, M.J. Merwin, B. Clausen, J.G. Speer and D.K. Matlock: Metall. Mater. Trans. A, 2011, vol. 42A, pp. 3691–3702.
H.W. Luo, J. Shi, C. Wang, W.Q Cao, X.J. Sun and H. Dong: Acta Mater., 2011, vol. 59, pp. 4002–14.
R.L. Miller: Metall. Trans., 1972, vol. 3, pp. 905–12.
Z.H. Cai, H.Ding, X.Xue and Q.B.Xin: Mater. Sci. Eng. A, 2013, vol. 560, pp. 388–95.
C. Wang, W.Q. Cao, J. Shi, C.X. Huang and H. Dong: Mater. Sci. Eng. A, 2013, vol. 562, pp. 89–95.
D.W. Suh, J.H. Ryu, M.S. Joo, H.S. Yang, K. Lee and H.K.D.H. Bhadeshia: Metall. Mater. Trans. A, 2013, vol. 44A, pp. 286–93.
H. Qu, G.M. Michal and A.H. Heuer. Metall. Mater. Trans. A, 2013, vol. 44A, pp. 4450–53.
S. Lee, S.-J. Lee, S. S. Kumar, K. Lee and B.C. De Cooman: Metall. Mater. Trans. A, 2011, vol. 42A: 3638–51.
B.C. De Cooman and S. Lee: Proceedings of The 2nd International Symposium on Automobile Steel, China, Anshan, 2013, pp. 8–14.
E. De Moor, D.K. Matlock, J.G. Speer and M.J. Merwin: Scripta Mater., 2011, vol. 64, pp. 185–88.
R. Zhang, W.Q. Cao, Z.J. Peng, J. Shi, H. Dong and C.X. Huang: Mater. Sci. Eng. A, 2013, vol. 583, pp. 84–88.
J. Han and Y.-K. Lee: Acta Mater., 2014, vol. 67, pp. 354–61.
B.C. De Cooman, P. Gibbs, S. Lee and D.K. Matlock: Metall. Mater. Trans. A, 2013, vol. 44A, pp. 2563–72.
Q.H. Han, A. Asgari, P.D. Hodgson and N. Stanford: Mater. Sci. Eng. A, 2014, vol. 611, pp. 90–99.
E. Jimenez-Melero, N.H, van Dijk, L. Zhao, J. Sietsma, S.E. Offerman, J.P. Wright, and S. van der Zwaag: Scripta Mater., 2007, vol. 56(5), pp. 421–24.
H.-S. Yang and H.K.D.H. Bhadeshi: Scripta Mater., 2009, vol. 60, pp. 493–95.
J.C. Fisher, J.H. Hollomon and D. Turnbull: Metals. Trans., 1949, vol. 185, pp. 691–700.
J.W. Christian: in International Conference on Martensitic Transformations ICOMAT’79, G.B. Olson and M. Cohen, eds., 1979, pp. 220–34.
H.-S. Yang and H.K.D.H. Bhadeshia: Mater. Sci. Technol., 2007, vol. 23, pp. 556–60.
J. Mahieu, J. Maki, B.C. De Cooman and S. Claessens: Metall. Mater. Trans. A, 2002, vol. 33A, pp. 2573–80.
S. Lee and B.C. De Cooman: Metall. Mater. Trans. A, 2013, vol. 44A, pp. 5018–24.
C.-H. Seo, K.H. Kwon, K. Choi, K.-H. Kim, J.H. Kwak, S. Leed and N.J. Kim: Scripta Mater., 2012, vol. 66, 519–22.
R. Blondé, E. Jimenez-Melero, L. Zhao, J.P. Wright, E. Brück, S. van der Zwaag and N.H. van Dijk: Acta Mater., 2012, vol. 60, pp. 565–77.
Z.J. Xie, Y.Q. Ren, W.H. Zhou, J.R. Yang, C.J. Shang and R.D.K. Misra: Mater. Sci. Eng. A, 2014, vol. 603, pp. 69–75.
C.Y. Wang, J. Shi, W.Q. Cao and H. Dong: Mater. Sci. Eng. A, 2010, vol. 527, pp. 3442–49.
E. Jimenez-Melero, N.H. van Dijk, L. Zhao, J. Sietsma, J.P. Wright, S. van der Zwaag: Mater. Sci. Eng. A, 2011, vol. 528, pp. 6407–16.
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Manuscript submitted August 18, 2014.
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Han, Q., Zhang, Y. & Wang, L. Effect of Annealing Time on Microstructural Evolution and Deformation Characteristics in 10Mn1.5Al TRIP Steel. Metall Mater Trans A 46, 1917–1926 (2015). https://doi.org/10.1007/s11661-015-2822-7
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DOI: https://doi.org/10.1007/s11661-015-2822-7