Microstructural Changes of the Nanostructured Bainitic Steel Induced by Quasi-Static and Dynamic Deformation

• Autorzy: Marcisz J. , Burian W. , Rozmus R. , Janiszewski J.

Identyfikatory

DOI

10.1515/amm-2017-0341

• Języki publikacji: EN

Abstrakty

EN

Changes in the microstructure of nanostructured bainitic steel induced by quasi-static and dynamic deformation have been shown in the article. The method of deformation and strain rate have important impact on the microstructure changes especially due to strain localization. Microstructure of nanostructured steel Fe-0.6%C-1.9Mn-1.8Si-1.3Cr-0.7Mo consists of nanometer size carbide-free bainite laths and 20-30% volume fraction of retained austenite. Quasi-static and dynamic (strain rate up to 2×10² s^-1) compression tests were realized using Gleeble simulator. Dynamic deformation at the strain rate up to 9×10³ s^-1 was realized by the Split Hopkinson Pressure Bar method (SHPB). Moreover high energy firing tests of plates made of the nanostructured bainitic steel were carried out to produce dynamically deformed material for investigation. Adiabatic shear bands were found as a result of localization of deformation in dynamic compression tests and in firing tests. Microstructure of the bands was examined and hardness changes in the vicinity of the bands were determined. The TEM examination of the ASBs showed the change from the internal shear band structure to the matrix structure to be gradual. This study clearly resolved that the interior (core) of the band has an extremely fine grained structure with grain diameter ranging from 100 nm to 200 nm. Martensitic twins were found within the grains. No austenite and carbide reflections were detected in the diffraction patterns taken from the core of the band. Hardness of the core of the ASBs for examined variants of isothermal heat treatment was higher about 300 HV referring to steel matrix hardness.

Słowa kluczowe

EN

nanostructured bainitic steel; dynamic deformation; adiabatic shear bands; transmission electron microscopy

• Wydawca: Institute of Metallurgy and Materials Science of Polish Academy of Sciences ; Committee of Materials Engineering and Metallurgy of Polish Academy of Sciences
• Czasopismo: Archives of Metallurgy and Materials
• Rocznik: 2017
• Tom: Vol. 62, iss. 4
• Strony: 2317--2329
• Opis fizyczny: Bibliogr. 15 poz., rys., tab., wykr.

Twórcy

autor

Marcisz J.

• Institute for Ferrous Metallurgy, ul. Karola Miarki 12-14, 44-100 Gliwice

autor

Burian W.

• Institute for Ferrous Metallurgy, ul. Karola Miarki 12-14, 44-100 Gliwice

autor

Rozmus R.

• Institute for Ferrous Metallurgy, ul. Karola Miarki 12-14, 44-100 Gliwice

autor

Janiszewski J.

• Military University of Technology, ul. Gen. Sylwestra Kaliskiego 2, 01-476 Warszawa

Bibliografia

• [1] F. G. Caballero, H. K. D. H. Bhadeshia, K. J. A. Mawella, D. G. Jones, P. Brown, Mater. Sci. Technol. 18, 279-284 (2002).
• [2] C. Garcia-Mateo, F. G. Caballero, H. K. D. H. Bhadeshia, ISIJ Int. 43, 1238-1243 (2003).
• [3] C. Garcia-Mateo, F. G. Caballero, H. K. D. H. Bhadeshia, ISIJ Int. 43, 1821-1825 (2003).
• [4] F. G. Caballero, H. K. D. H. Bhadeshia, Curr. Opin. Solid State Mater. Sci. 8, 251-257 (2004).
• [5] B. Garbarz, W. Burian, Steel Research Int. 85 (12), 1620-1628 (2014).
• [6] A. Leiro, E. Vuorinen, K. G. Sundin, B. Prakash, T. Sourmail, V. Smanio, F. G. Caballero, C. Garcia-Mateo, R. Elvira, Wear, 298-299, 42-47 (2013).
• [7] W. Liu, J. Qu, H. Shao, J. Mater. Proc. Technol. 69, 186-189 (1997).
• [8] W. Burian, J. Marcisz, B. Garbarz, L. Starczewski, Arch. of Metall. and Mater. 59 (3), 1211-1216 (2014).
• [9] J. Marcisz, W. Burian, J. Stępień, L. Starczewski, M. Wnuk, J. Janiszewski, 28th International Symposium on Ballistics, 1348-1361, 2014 Atlanta, USA.
• [10] T. W. Wright, The physics and mathematics of adiabatic shear bands, Cambridge University Press, 2002.
• [11] S. M. Walley, Metallurgical and Materials Transactions A 38A, 2629-2654 (November 2007).
• [12] L. C. D. Fielding, H. K. D. H. Bhadeshia, Mater. Sci. and Tech. 30, 812-817 (2014).
• [13] M. A. Meyers, V. F. Nesterenko, J. C. LaSalvia, Q. Xue, Mater. Sci. and Eng. A317, 204-225 (2001).
• [14] B. Garbarz, J. Marcisz, W. Burian, A. Wiśniewski, Problemy Techniki Uzbrojenia. Biuletyn Naukowy Wojskowego Instytutu Technicznego Uzbrojenia, 118 (2), 41-49 (2011) (in polish).
• [15] D. T. Chung, S. K. Moon, Y. H. Yoo, Journal de Physique IV, Colloque C8, supplement au Journal de Physique III 4, 547-552 (septembre 1994).

Uwagi

EN

This work was financially supported by The National Centre for Research and Development (INNOTECH-K1/IN1/27/150443/NCBR/12, Project “Development of a modern armour panels resistant to the impact of shaped charges and projectiles”)

PL

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2018).