Abstract
This paper presents a method for quantifying probability of brittle fracture in low alloy steels. The proposed method shows how the probability of brittle fracture varies with stress intensity factor, temperature, deformation characteristics and microstructural parameters of low-alloyed steel. Application of this method on Ni-Cr steel demonstrated very good agreement of predicted temperature dependence of scatter in brittle fracture toughness values with experimental results. The method enables also to calculate characteristic distance as a radial dimension from the crack tip where microcrack initiation is the most probable. The characteristic distance of investigated Ni-Cr steel was found to decrease with increasing temperature. Microstructural mechanisms of initiation and propagation of brittle fracture were identified from results of fractography analysis. The proposed procedure represents a foundation for systematic control of relationship between stress-strain behaviours, toughness and reliability of steel engineering parts
This is a preview of subscription content, log in via an institution.
Buying options
Tax calculation will be finalised at checkout
Purchases are for personal use only
Learn about institutional subscriptionsPreview
Unable to display preview. Download preview PDF.
References
McMahon, C.J. and Cohen, M. (1965) Initiation of cleavage in polycrystalline iron, Ada Metallurgica 13, 591–604.
Gurland, J. (1972) Observations on the fracture of cementite particles in a spheroidised 1.05 %C steel deformed at room temperature, Ada Metallurgica 20, 735–741.
Rawal, S.P. and Gurland, J. (1977) Observations on the effect of cementite particles on the fracture toughness of spheroidised carbon steels, Metallurgical Transactions 8A, 691–698.
Curry, D.A. and Knott, J.F. (1978) Effect of microstructure on cleavage fracture stress in steel, Metal Science 12, 511–514.
Hahn, G.T. (1984) On influence of microstructure on brittle fracture toughness, Metallurgical Transactions 15A, 947–959.
Lin, T., Evans, A.G. and Ritchie, R.O. (1986) A statistical model of brittle fracture by transgranular cleavage, J. Mechanics Physics Solids 34, 477–497.
Curry, D.A. and Knott, J.F. (1979) Effect of microstructure on cleavage fracture toughness of quenched and tempered steels, Metal Science 13, 341–345.
Evans, A.G. Statistical aspects of cleavage fracture in steel, Metallurgical Transactions 14A, (1983), p. 1349.
Beremin, F.M. (1983) A local criterion for cleavage fracture of a nuclear pressure vessel steel, Metallurgical Transactions 14A, 2277–2287.
Wallin, K., Saario, T. and Törönen, K. (1984) A statistical model for carbide induced brittle fracture in steel, Metal Science 18, 13–16.
Lin, T., Evans, A.G. and Ritchie, R.O. (1986) Statistical analysis of cleavage fracture ahead of sharp cracks and rounded notches, Acta Metallurgica 34, 2205–2216.
Lin, T., Evans, A.G. and Ritchie, R.O. (1987) Stochastic modelling of the independent roles of particle size and grain size in transgranular cleavage fracture, Metallurgical Transactions 18A, 641–651.
Strnadel, B. and Mazanec, K. (1991) Low temperature transcrystalline failure, Acta Metallurgica et Materialia 39, 2461–2468.
Meizoso, A.M., Arizorreta, I.O., Sevillano, J.G. and Perez, M.F. (1994) Modelling cleavage fracture of bainitic steels, Acta Metallurgica et Materialia 42, 2057–2068.
Wallin, K. (1984) The scatter in KIc — results, Engineering Fracture Mechanics 19, 1085–1093.
Neville, DJ. and Knott, J.F. (1986) Statistical distributions of toughness and fracture stress for homogenous and inhomogeneous materials, J. Mechanics Physics Solids 34, 243–291.
Chen, J.H., Yan, C. and Sun, J. (1994) Further study on the mechanism of cleavage fracture at low temperatures, Acta Metallurgica et Materialia 42, 251–261.
Chen, J.H., Wang, G.Z. and Wang, H.J. (1996) A statistical model for cleavage fracture of low alloy steel, Acta Metallurgica et Materialia 44, 3979–3989.
Hutchinson, J. W. (1968) Singular behaviour at the end of the tensile crack in a hardening material, J. Mechanics Physics Solids 16, 13–31.
Gerberich, W.W. and Kurman, E. (1985) New contributions to the effective surface energy of cleavage, Scripta Metallurgica 19, 295–298.
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2002 Springer Science+Business Media Dordrecht
About this chapter
Cite this chapter
Strnadel, B., Dlouhý, I. (2002). Probability of Brittle Fracture in Low Alloy Steels. In: Dlouhý, I. (eds) Transferability of Fracture Mechanical Characteristics. NATO Science Series, vol 78. Springer, Dordrecht. https://doi.org/10.1007/978-94-010-0608-8_11
Download citation
DOI: https://doi.org/10.1007/978-94-010-0608-8_11
Publisher Name: Springer, Dordrecht
Print ISBN: 978-1-4020-0795-8
Online ISBN: 978-94-010-0608-8
eBook Packages: Springer Book Archive