Abstract
In this paper, we present results of fatigue tests of a natural steel composite material for cyclic bending by a zero-loading cycle. Natural ferrite-martensitic composite (NFMC) has a structure of alternating layers of ductile ferrite and strong martensite, which causes a special mechanism of crack retardation under loading. The zero-loading cycle assumes the presence of tensile forces directed only in one direction, which makes it possible to avoid hardening of the crack edges during its growth. Using the obtained data on the kinetics of the development of a fatigue crack and the rate of its growth, a diagram of fatigue failure was constructed depending on the number of vibration cycles. Test results of samples from steel of one chemical composition are compared. In one case, a traditional heat treatment was carried out on the structure of tempering sorbitol. In the other case, a layered structure of the ferrite-martensite composite was obtained by quenching the initial line ferrite-pearlite structure from the intercritical temperature range. These materials had the same hardness, but the difference in structural organization determined the advantage of steel with the NFMC structure in terms of fracture resistance under cyclic loading. When a crack approaches the martensite-ferrite interface, delamination occurs in the ferrite due to tensile stresses parallel to the crack plane. The crack growth stops until additional energy for the formation of a new crack under conditions close to the uniaxial stress state is supplied. A technique for determining the characteristics of crack growth kinetics under fatigue loading, which is recommended for testing steels and alloys under conditions of cyclic load changes, is presented.
Similar content being viewed by others
REFERENCES
Pustovoit, V.N., Dombrovskii, Yu.M., Zheleva, A.V., and Zaitseva, M.V., Method of natural ferrite-martensite composite obtaining, RF Patent 2495141, 2013.
Pustovoit, V.N., Dolgachev, Yu.V., Dombrovskii, Yu.M., and Duka, V.V., Structural organization and properties of a natural ferrite-martensite steel composite, Met. Sci. Heat Treat., 2020, vol. 62, nos. 5–6, pp. 369–375. https://doi.org/10.1007/s11041-020-00570-9
Cadoni, E., Singh, N.K., Forni, D., Singha, M.K., and Gupta, N.K., Strain rate effects on the mechanical behavior of two dual phase steels in tension, Eur. Phys. J.: Spec. Top., 2016, vol. 225, no. 2, pp. 409–421. https://doi.org/10.1140/epjst/e2016-02638-3
Luo, M. and Wierzbicki, T., Numerical failure analysis of a stretch-bending test on dual-phase steel sheets using a phenomenological fracture model, Int. J. Solids Struct., 2010, vol. 47, nos. 22–23, pp. 3084–3102. https://doi.org/10.1016/j.ijsolstr.2010.07.010%20
Kim, J.H., Sung, J.H., Piao, K., and Wagoner, R.H., The shear fracture of dual-phase steel, Int. J. Plast., 2011, vol. 27, no. 10, pp. 1658–1676. https://doi.org/10.1016/j.ijplas.2011.02.009
Dykeman, J., Hoydick, D., Link, T., and Mitsuji, H., Material property and formability characterization of various types of high strength dual phase steel, SAE Tech. Paper, 2009, vol. 1, pp. 794–804. https://doi.org/10.4271/2009-01-0794
Soboyejo, W., Mechanical Properties of Engineered Materials, New York: CRC Press, 2002.
Pustovoit, V.N., Grishin, S.A., Duka, V.V., and Fedo-sov, V.V., Setup for studying the kinetics of crack growth in cyclic bending tests, Zavod. Lab. Diagnost. Mater., 2020, vol. 86, no. 7, pp. 59–64. https://doi.org/10.26896/1028-6861-2020-86-7-59-64
Pustovoit, V.N. and Grishin, S.A., Special features of fracture of carbon steel with a structure of laminar ferrite–carbide mixture, Met. Sci. Heat Treat., 1987, vol. 29, nos. 3–4, pp. 262–266. https://doi.org/10.1007/BF00769424
Nicholas, T., High Cycle Fatigue: A Mechanics of Materials Perspective, Elsevier, 2006.
Miklyaev, P.G., Neshpor, G.S., and Kudryashov, V.G., Kinetika razrusheniya (Kinetics of Destruction), Moscow: Metallurgiya, 1979.
Cooper, G.A. and Kelly, A., Tensile properties of fibre-reinforced metals: fracture mechanics, J. Mech. Phys. Solids, 1967, vol. 15, no. 4, pp. 279–297. https://doi.org/10.1016/0022-5096(67)90017-8
Greif, R. and Sanders, J.L., The effect of a stringer on the stress in a cracked sheet, J. Appl. Mech., 1965, vol. 32, no. 1, pp. 59–66. https://doi.org/10.1115/1.3625784
Bloom, J.M. and Sanders, J.L., The effect of a riveted stringer on the stress in a cracked sheet, J. Appl. Mech., 1966, vol. 33, no. 3, pp. 561–570. https://doi.org/10.1115/1.3625122
Sanders, J.L., Effect of a stringer on the stress concentration due to a crack in a thin sheet, Nat. Advisory Committee Aeronaut., 1959, no. 4207, p. 10.
Poe, J.C.C., Stress Intensity Factor for a Cracked Sheet with Riveted and Uniformly Spaced Stringers, NASA Technical Report TR R-358, Washington, DC: NASA, 1971.
Pustovoit, V.N., Duka, V.V., and Dolgachev, Yu.V., Scenario of crack growth in steel with a ferrite-martensite composite structure, Izv. Volgograd. Gos. Tekh. Univ., 2017, no. 10, pp. 118–121.
Pustovoit, V.N., Duka, V.V., Dolgachev, Y.V., Aref’eva, L.P., Fedosov, V.V., and Salynskih, V.M., Features of destruction of a ferrite-martensitic composite, MATEC Web Conf., 2018, vol. 226, p. 03006. https://doi.org/10.1051/matecconf/201822603006
Irwin G.R., Paris P.C. Fundamental aspects of crack growth and fracture, Engineering Fundamentals and Environmental Effects, New York: Academic Press, 1971. P. 1–46.
Pugno, N., Ciavarella, M., Cornetti, P., and Carpinteri, A., A generalized Paris’ law for fatigue crack growth, J. Mech. Phys. Solids, 2006, vol. 54, no. 7, pp. 1333–1349. https://doi.org/10.1016/j.jmps.2006.01.007
Jones, R., Molent, L., and Pitt, S., Similitude and the Paris crack growth law, Int. J. Fatigue, 2008, vol. 30, nos. 10–11, pp. 1873–1880. https://doi.org/10.1016/j.ijfatigue.2008.01.016
Turner, C.E., Paris, P.C., and Erns, H., On the relationship between work and crack tip stress intensity in elasticity and plasticity, Int. J. Fract., 1981, vol. 17, no. 6, pp. R151–R154. https://doi.org/10.1007/BF00681560
Paris, P. and Erdogan, F., A critical analysis of crack propagation laws, J. Fluids Eng., 1963, vol. 85, no. 4, pp. 528–533. https://doi.org/10.1115/1.3656900
Panasyuk, V.V., Ostash, O.P., Kostyk, E.M., Kudryashov, V.G., and Neshpor, G.S., Cyclic crack resistance of aluminum alloys in the crack origin and growth stages, Soviet Mater. Sci., 1987, vol. 23, no. 5, pp. 473–479. https://doi.org/10.1007/BF01148672
Den Hartog, J.P., Advanced Strength of Materials, New York: Courier Corporation, 1987.
Ross, C.T.F. and Chilver, A., Strength of Materials and Structures, Oxford: Elsevier, 1999.
Mott, R.L. and Untener, J.A., Applied Strength of Materials, Boca Raton, Fla.: CRC Press, 2008.
Da Silva, V.D., Mechanics and Strength of Materials, New York: Springer, 2005.
Stephens, R.C., Strength of Materials: Theory and Examples, London: Elsevier, 2013.
Belyayev, N.M., Problems in Strength of Materials, Oxford: Elsevier, 2016.
Author information
Authors and Affiliations
Corresponding authors
Ethics declarations
The authors declare that they have no conflicts of interest.
Additional information
Translated by A. Ivanov
About this article
Cite this article
Pustovoit, V.N., Grishin, S.A., Dolgachev, Y.V. et al. Fatigue Fracture of Steel with a Ferrite-Martensite Composite Structure. Steel Transl. 52, 140–144 (2022). https://doi.org/10.3103/S0967091222020206
Received:
Revised:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.3103/S0967091222020206