Abstract
The critical event of cleavage is variable for different types of specimens made of the same steel. In notched specimens (Charpy V or 4 PB) over a wide temperature range as low as -196°C, the critical event is the propagation of a ferrite grain-sized crack (30-40µm). In precracked specimens at a moderately low temperature (around -110°C) it is the propagation of a second phase particle-sized crack (< 10µm). At ever lower temperatures (-150°C - -196°C) the cleavage fracture is nucleation-controlled.
No matter whether a notched specimen or a precracked specimen is used, as long as a fibrous crack has been initiated and propagated in it, the critical event is the propagation of a ferrite grain-sized crack and the fracture behavior can be handled as in a specimen with an acute notch.
The difference of ‘σ\(f\)’values measured in a notched specimen and a precracked specimen is caused by a change of the critical event in these two specimens.
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References
E. Smith, International Journal of Fracture Mechanics 14 (1968) 131–146.
A.N. Stroh, Proceedings, Royal Society A233 (1954) 400.
J.F. Knott, Journal of the Iron and Steel Institute (1966) 104–111.
J.A. Hendrickson et al., Transactions ASM 50 (1958) 656–676.
G.T. Hahn et al., Proceedings, Swampscott Conference on Fracture, Wiley, New York (1959) 91–93.
A.H. Cottrell, Proceedings, Swampscott Conference on Fracture, Wiley, New York (1959) 20–53.
N.J. Petch, Proceedings, Swampscott Conference on Fracture, Wiley, New York (1959) 54–90.
C.J. McMahon and M. Cohen, Acta Metallurgica 13 (1965) 591–605.
E. Smith, Proceedings, Conference on the Physical Basis of Yield and Fracture, Physics Society, Oxford (1966) 36.
D.A. Curry and J.F. Knott, Metals Science Journal 12 (1978) 511–514.
G.T. Hahn, Metallurgical Transactions 15A (1984) 947–959.
R.O. Ritchie, J.F. Knott and J.R. Rice, Journal of the Mechanics and Physics of Solids 21 (1973) 395–410.
D. Curry and J.F. Knott, Metals Science Journal 13 (1979) 341–345.
Chun-Xiao Hou, Qi-Gong Cai, Yi Su and Xiu-Yuan Zheng, Proceedings ICF 6, 2 (1985) 1412–1422.
Tsann Lin, A.G. Evans and R.O. Ritchie, Journal of the Mechanics and Physics of Solids 34 (1986) 477–497.
G. Oates and J.R. Griffiths, Metals Science Journal 3 (1969) 111–115.
Tsan Lin, A.G. Evans and R.O. Ritchie, Metallurgical Transactions 18A (1987) 641–651.
J.H. Chen and C. Yan, Materials Science and Technology 4 (1988) 732–739.
J.H. Chen, G.Z. Wang and H. Ma, Metallurgical Transactions 21A (1990) 321–330.
J.H. Chen, L. Zhu and H. Ma, Acta Metallurgica et Materialia 38 (1990) 2527–2535.
J.H. Chen, G.Z. Wang, Z. WAng, L. Zhu and Y.Y. Gao, Metallurgical Transactions 22A (1991) 2287–2296.
J.H. Chen and G.Z. Wang, Metallurgical Transactions 23A (1992) 509–517.
J.H. Chen, L. Zhu, G.Z. Wang and Z. Wang, Metallurgical Transactions 24A (1993) 659–667.
J.H. Chen and G.Z. Wang, Metallurgical Transactions 25A (1994) 1381–1390.
J.H. Chen, T.D. Xia and C. Yan, Welding Journal 172 (1993) 19s–27s.
J.H. Chen, G.Z. Wang, C. Yan, H. Ma and L. Zhu, International Journal of Fracture 83 (1997) Pt. III.
A.N. Stroh, Proceedings, Royal Society 223 (1954) 404.
A.W. Thompson and J.F. Knott, Metallurgical Transactions 24A (1993) 523–534.
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Chen, J., Wang, G., Yan, C. et al. Advances in the mechanism of cleavage fracture of low alloy steel at low temperature. Part I: Critical event. International Journal of Fracture 83, 105–120 (1997). https://doi.org/10.1023/A:1007306932437
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DOI: https://doi.org/10.1023/A:1007306932437