Abstract
Microstructural evolution accompanied by localization of plastic flow was studied in compression of a ferritic stainless steel with high stacking fault energy (SFE) at 873 K (≈0.5 Tm). The structure evolution is characterized by the formation of dense dislocation walls at low strains and subsequently of microbands and their clusters at moderate strains, followed by the evolution of fragmented structure inside the clusters of microbands at high strains. The misorientations of the fragmented boundaries and the fraction of high-angle grain boundaries increase substantially with increasing strain. Finally, further straining leads to the formation of new fine grains with high-angle boundaries, which become more equiaxed than the previous fragmented structure. The mechanisms operating during such structure changes are discussed in detail.
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T. Sakai and J.J. Jonas: Acta Metall., 1984, vol. 32, pp. 189–209.
T. Sakai: J. Mater. Processing Technol., 1995, vol. 53, pp. 349–61.
H.J. McQueen and J.J. Jonas: J. Appl. Met., 1984, vol. 3, pp. 233–41.
A.N. Belyakov and R.O. Kaibyshev: Phys. Met. Metallogr., 1993, vol. 76, pp. 162–67.
R. Kaibyshev and O. Sitdikov: Z. Metallkd., 1994, vol. 85, pp. 738–43.
M. Furukawa, Z. Horita, M. Nemoto, R.Z. Valiev, and T.G. Langdon: Acta Mater., 1996, vol. 44, pp. 4619–29.
G.A. Salishchev, R.G. Zaripova, A.A. Zakirova, and H.J. McQueen: Hot Workability of Steels and Light Alloys-Composites, H.J. McQueen, E.V. Konopleva, and N.D. Ryan, eds. TMS-CIM, Montreal, 1996, pp. 217–26.
A.N. Vergazov, V.A. Likhachev, and V.V. Rybin: Phys. Met. Metallogr., 1976, vol. 42, pp. 101–06.
S. Dymek and M. Blicharski: Z. Metallkd., 1985, vol. 76, pp. 777–85.
A. Korbel, J. Rys, and M. Szczerba: Acta Metall., 1985, vol. 33, pp. 2215–19.
N. Hansen: Metall. Trans. A, 1985, vol. 16A, pp. 2167–90.
B. Bay, N. Hansen, D.A. Hughes, and D. Kuhlmann-Wilsdorf: Acta Metall. Mater., 1992, vol. 40, pp. 205–19.
W. Bochniak and M. Niewczas: Z. Metallkd., 1993, vol. 84, pp. 211–15.
D.A. Hughes, Q. Liu, D.C. Chrzan, and N. Hansen: Acta Mater., 1997, vol. 45, pp. 105–12.
P.K. Chaudhury and F.A. Mohamed: Acta Metall., 1988, vol. 36, pp. 1099–1110.
K.W. Andrews: Physical Metallurgy. Techniques and Applications, George Allen & Unwin Ltd., London, 1973, vol. 1, pp. 252–61.
V.I. Vladimirov and A.E. Romanov: Disklinatsii v Kristallakh (Disclinations in Crystals), Nauka, Leningrad, Russia, 1986, pp. 181–90.
V.V. Rybin, A.A. Zisman, and N.Yu. Zolotorevsky: Acta Metall. Mater., 1993, vol. 41, pp. 2211–17.
A.A. Nazarov, A.E. Romanov, and R.Z. Valiev: Acta Metall. Mater., 1993, vol. 41, pp. 1033–40.
J.P. Hirth and J. Lothe: Theory of Dislocations, Krieger Publishing Company, Malabar, FL, 1992, pp. 366–73.
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Belyakov, A., Sakai, T. & Kaibyshev, R. New grain formation during warm deformation of ferritic stainless steel. Metall Mater Trans A 29, 161–167 (1998). https://doi.org/10.1007/s11661-998-0169-z
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DOI: https://doi.org/10.1007/s11661-998-0169-z