Abstract
Microstructural aspects of deformation and fracture of steel which is nanostructured using the technique of equal-channel angular pressing and thermal processing at low temperature (−60°C) are considered in the paper. The methods of optical and atomic-force microscopy are used to investigate deformation surfaces. The fracture character change (from a brittle cleavage to a ductile shear) at low temperatures is shown to be associated, on the one hand, with a fuzzing of grain boundaries during pressing with solid structural phases and, on the other hand, by the replacement of the prevalent plastic deformation carriers.
Article PDF
Similar content being viewed by others
Avoid common mistakes on your manuscript.
References
V. M. Segal, V. I. Reznikov, V. I. Kopylov, et al., Processes. of Plastic Structure Formation in Metals (Navuka i Tekhnika, Minsk, 1994) [in Russian].
R. Z. Valiev and I. V. Aleksandrov, Nanostructured. Materials Produced under Severe Plastic Deformation (Logos, Moscow, 2000) [in Russian].
M. Z. Borisova, S. P. Yakovleva, and A. M. Ivanov, “Equal Channel Angular Pressing and Its Effect on Structure and Properties of the Constructional Steel St3,” Solid State Phenom. 114, 97–101 (2006).
G. Binnig, H. Rohrer, Ch. Gerber, and E. Weibel, “Surface Studies by Scanning Tunneling Microscopy,” Phys. Rev. Lett. 49, 57–61 (1982).
A. L. Suvorov, Yu. N. Cheblukov, N. E. Lazarev, et al., “Field Ion and Scanning Tunnel Microscopy Studies of Surface and Bulk Defects in Carbon and Silicon,” Zh. Tekh. Fiz. 70(3), 56–61 (2000) [Tech. Phys. 45 (3), 343 (2000)].
Yu. A. Bykov, S. D. Karpukhin, and E. I. Gazukina, “On Some Special Features of the Structure and Properties of Metallic “Thin” Films,” Metalloved. Term. Obrab. Met., No. 6, 45–47 (2000) [Met. Sci. Heat Treat. 42 (6), 250–252 (2000)].
X. Bo, H. Fang, and J. Wang, “Investigation of Surface Relief Accompanying Widmanstatten Ferrite Formation by Scanning Tunneling Microscopy,” Scr. Mater. 39(2), 247–252 (1998).
E. A. Arkhangel’skaya, V. V. Lepov, and V. P. Larionov, “The Role of Defects in the Development of Decelerated Destruction of a Damaged Medium under the Action of Hydrogen,” Materialovedenie, No. 8, 7–10 (2003).
H. Liebowitz, Fracture: An Advanced Treatise, Vol. 6: Fracture of Metals (Metallurgiya, Moscow, 1996; Academic, New York, 1969).
P. D. Gorelik, S. V. Dobatkin, and L. M. Kaputkina, Recrystallization of Metals and Alloys, 3rd ed. (Moscow Institute of Steel and Alloys, Moscow, 2005) [in Russian].
P. D. Odesskii, I. I. Vedyakov, and V. M. Gorpinichenko, Prevention of Brittle Fracture of Metalwork Structural. Constructions (SP Intermet Inzhiniring, Moscow, 1998) [in Russian].
G. I. Raab, A. M. Ivanov, D. V. Gunderov, et al., “Increase in the Strength and Cold Resistance of Structural Steels under Severe Plastic Deformation and Heat Treatment,” in Proceedings of the Second All-Russian. Conference on Nanomaterials “NANO—2007” and the. Fourth Russian-Belarusian Workshop “Nanostructured. Materials—2007,” Novosibirsk, Russia, March 13–16, 2007 (Institute of Solid-State Chemistry and Mechanochemistry, Siberian Branch, Russian Academy of Sciences, Novosibirsk, 2007), p. 390.
W. Q. Cao, S. H. Yu, Y. B. Chun, et al., “Deformation Mechanism of Zr702 Processed by Equal Channel Angular Pressing” Metall. Mater. Trans. A 38(11), 2805–2814 (2007).
W. S. Choi, H. S. Ryoo, S. K. Hwang, et al., “Microstructure Evolution in Zr under Equal Channel Angular Pressing,” Metall. Mater. Trans. A 33(3), 973–980 (2002).
Author information
Authors and Affiliations
Corresponding author
Additional information
Original Russian Text © V.V. Lepov, A.M. Ivanov, B.A. Loginov, V.A. Bespalov, V.S. Achikasova, R.R. Zakirov, V.B. Loginov, 2008, published in Rossiiskie nanotekhnologii, 2008, Vol. 3, Nos. 11–12.
Rights and permissions
About this article
Cite this article
Lepov, V.V., Ivanov, A.M., Loginov, B.A. et al. The mechanism of nanostructured steel fracture at low temperatures. Nanotechnol Russia 3, 734–742 (2008). https://doi.org/10.1134/S1995078008110116
Received:
Published:
Issue Date:
DOI: https://doi.org/10.1134/S1995078008110116