The energy of 12Cr1MoV steel specimen fracture with V-, U- and I-shaped notches under impact loading was measured and analyzed. The results were described using common energy-based approach to ductile-brittle fracture. Within the stage-wise approach of physical mesomechanics of materials, the rate of increase/decrease of load at the stage of initiation and propagation of a macroscopic defect was evaluated, providing a good correlation with the work of fracture. The excitable cellular automata technique was applied to simulate the deformational behavior of the specimens with different shape of notches. It was demonstrated that in the case of the blunted notch, the maximum impact toughness is facilitated by a more uniform distribution of the load along the notch, which hinders brittle fracture at lower testing temperature. For the specimen with the sharp I-notch, the bands of localized shear are oriented normally to the loading axis, inhibiting macrolocalization of strain and crack propagation. For this reason, the impact toughness of the specimen with the I-notch appeared to be higher than that of the V-notched one.
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10 November 2016
ADVANCED MATERIALS WITH HIERARCHICAL STRUCTURE FOR NEW TECHNOLOGIES AND RELIABLE STRUCTURES 2016: Proceedings of the International Conference on Advanced Materials with Hierarchical Structure for New Technologies and Reliable Structures 2016
19–23 September 2016
Tomsk, Russia
Research Article|
November 10 2016
Influence of strain localization on deformation mechanisms and fracture of 12Cr1MoV steel with various notch shape under impact loading
S. V. Panin;
S. V. Panin
a)
1
Institute of Strength Physics and Materials Science SB RAS
, Tomsk, 634055 Russia
2
National Research Tomsk Polytechnic University
, Tomsk, 634050 Russia
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I. V. Vlasov;
I. V. Vlasov
b)
1
Institute of Strength Physics and Materials Science SB RAS
, Tomsk, 634055 Russia
2
National Research Tomsk Polytechnic University
, Tomsk, 634050 Russia
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P. O. Maruschak;
P. O. Maruschak
c)
3
Ternopil Ivan Pul’uj National Technical University
, Ternopil, 46001 Ukraine
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D. D. Moiseenko;
D. D. Moiseenko
d)
1
Institute of Strength Physics and Materials Science SB RAS
, Tomsk, 634055 Russia
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F. Berto;
F. Berto
e)
4Department of Management and Engineering,
University of Padova
, Vicenza, 36100 Italy
5Department of Engineering Design and Materials,
NTNU
, Trondheim, 7491 Norway
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A. Vinogradov;
A. Vinogradov
f)
5Department of Engineering Design and Materials,
NTNU
, Trondheim, 7491 Norway
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R. T. Bischak;
R. T. Bischak
g)
6
Ivano-Frankivsk National Technical University of Oil and Gas
, Ivano-Frankivsk, 76000 Ukraine
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P. V. Maksimov
P. V. Maksimov
h)
1
Institute of Strength Physics and Materials Science SB RAS
, Tomsk, 634055 Russia
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AIP Conf. Proc. 1783, 020182 (2016)
Citation
S. V. Panin, I. V. Vlasov, P. O. Maruschak, D. D. Moiseenko, F. Berto, A. Vinogradov, R. T. Bischak, P. V. Maksimov; Influence of strain localization on deformation mechanisms and fracture of 12Cr1MoV steel with various notch shape under impact loading. AIP Conf. Proc. 10 November 2016; 1783 (1): 020182. https://doi.org/10.1063/1.4966476
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