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Translated from Problemy Prochnosti, No. 1, pp. 109 – 115, January – February, 2015.
Nuclear-grade 316LN stainless steel was subjected to single and double compressions at 1173–1473 K and strain rates of 0.01–10 s−1. The dynamic and postdeformation recrystallization was investigated through analysis of the stress–strain curves and microstructure evolution. The thermal deformation equation and the quantitative relationships between the critical stress for the initiation of dynamic recrystallization and the Zener–Hollomon parameter, Z, and between the dynamic recrystallization grain size D and Z were derived. Dynamic recrystallization developed through an ordinary mechanism at low Z values and through a necklace mechanism at high Z values, with a critical Z value of about 3.6·1016. At 1273–1473 K, softening of 316LN stainless steel after deformation was characterized by an Avrami-type equation, where the Avrami parameter, n, has no appreciable temperature dependence, and an average value of n and the activation energy, Qrex, were 0.68 and 129 kJ/mol, respectively.
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N. D. Ryan and H. J. McQueen, “Flow stress, dynamic restoration, strain hardening and ductility in hot-working of 316 steel,” J. Mater. Process. Technol., 21, Issue 2, 177–199 (1990). CrossRef
M. Jafari and A. Najafizadeh, “Correlation between Zener–Hollomon parameter and necklace DRX during hot deformation of 316 stainless steel,” Mater. Sci. Eng. A, 501, 16–25 (2009). CrossRef
N. D. Ryan and H. J. McQueen, “Hot strength and microstructural evolution of 316 stainless steel during simulated multistage deformation by torsion,” J. Mater. Process. Technol., 36, Issue 2, 103–123 (1993). CrossRef
Sung-Il Kim, Youngseog Lee, and Byoung-Lok Jang, “Modeling of recrystallization and austenite grain size for AISI 316 stainless steel and its application to hot bar rolling,” Mater. Sci. Eng. A, 357, 235–239 (2003). CrossRef
Dipti Samantaray, Sumantra Mandal, C. Phaniraj, and A. K. Bhaduri, “Flow behavior and microstructural evolution during hot deformation of AISI type 316L(N) austenitic stainless steel,” Mater. Sci. Eng. A, 528, 8565–8572 (2011). CrossRef
C. M. Sellars, “Modelling – an interdisciplinary activity,” in: S. Yue (Ed.), Proc. Int. Symp. on Mathematical Modelling of Hot-Rolling of Steel, Hamilton, ON, Canada (1990), pp. 1–18.
Y. H. Lu, R. D. Fu, and L. Qiu, “Deformation behavior of nitrogen strengthened high manganese austenitic steel,” Trans. Mater. Heat Treat., 28, No. 2, 69–72 (2007).
E. I. Poliak and J. J. Jonas, “Initiation of dynamic recrystallization in constant strain rate hot deformation,” ISIJ Int., 43, No. 5, 684–691 (2003). CrossRef
A. Najafizadeh and J. J. Jonas, “Predicting the critical stress for initiation of dynamic recrystallization,” ISIJ Int., 46, No. 11, 1679–1684 (2006). CrossRef
D. Ponge and G. Gottstein, “Necklace formation during dynamic recrystallization: mechanisms and impact on flow behavior,” Acta Mater., 46, No. 1, 69–80 (1998). CrossRef
A. Dehghan-Manshadi, M. R. Barnett, and P. D. Hodgson, “Hot deformation and recrystallization of austnitic stainless steel. Part 2: postdeformation recrystallization,” Metall. Mater. Trans. A, 39, 1371–1381 (2008). CrossRef
R. A. P. Djaic and J. J. Jonas, “Recrystallization of high carbon steel between intervals of high temperature deformation,” Metall. Trans. A, 4, 621–624 (1973). CrossRef
W. H. Zhang, Z. H. Wang, D. L. Zhao, et al., “Phase diagram calculation and micro-alloying design of nuclear grade 316LN steel,” J. Yanshan Univ., 35, No. 6, 519–522 (2011).
S. F. Medina and J. E. Mancilla, “Determination of static recrystallization critical temperature of austenite in microalloyed steels,” ISIJ Int., 33, No. 12, 1257–1264 (1993). CrossRef
L. P. Karjalainen, T. M. Maccagno, and J. J. Jonas, “Softening and flow stress behavior of Nb microalloyed steels during hot-rolling simulation,” ISIJ Int., 35, No. 12, 1523–1531 (1995). CrossRef
A. S. Taylor and P. D. Hodgson, “The postdeformation recrystallization behavior of 304 stainless steel following high strain rate deformation,” Mater. Sci. Eng. A, 529, 164–169 (2011). CrossRef
- Dynamic and Postdeformation Recrystallization of Nuclear-Grade 316LN Stainless Steel
R. H. Zhang
Z. H. Wang
Z. P. Shi
W. T. Fu
- Springer US
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