Abstract
The influence of the presence or absence of elastic mismatch between the dispersed and matrix phases on local crack particle interactions in brittle composites is reported. The role of interfacial bond strength is also investigated in the presence of elastic stress concentrations. The optimum toughness possible for a brittle composite results when G i⩽G m, (G i, G m — elastic rigidity moduli for inclusion and matrix), and the interfacial bond strength is sufficient to allow plastic deformation of the dispersed phase. The dispersion of a ductile second phase with high interfacial bond strength but G i>G m, reduces effective crack/particle interactions. To increase the toughness in this case, weak interfacial bonding is necessary. Ultrasonic fractography was used to verify the local crack/particle interactions in detail.
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D. J. Green, P. S. Nicholson and J. D. Embury, J. Mater. Sci. 14 (1979) 1413.
Idem, ibid. 14 (1979) 1657.
A. A. Griffith, Phil. Trans. Roy. Soc. London 221A (1920) 163.
T. K. Gupta, J. Mater. Sci. 2 (1974) 1585.
J. Gluklich, J. Eng. Mech. Proc. ASCE 89 (1962) 127.
J. N. Goodier, J. Appl. Mech. 1 (1933) 39.
J. Selsing, J. Amer. Ceram. Soc. 44 (1961) 419.
D. P. H. Hasselman and R. M. Fulrath, ibid 50 (8) (1967) 395.
F. F. Lange and K. C. Radford, J. Mater. Sci. 6 (1971) 197.
M. A. Stett and R. M. Fulrath, J. Amer. Ceram. Soc. 53 (1970) 5.
P. J. Mallick and L. J. Broutman, Mater. Sci. Eng. 18 (1975) 63.
P. Hing, Proc. Brit. Ceram. Soc. 25 (1975) 13.
C. T. Forwood. Phil. Mag. 17 (1968) 657.
A. R. Rosenfield, G. T. Hahn and R. G. Hoagland, J. Roch. Mech. 5 (1973) 77.
M. I. Mendelson and M. E. Fine, J. Amer. Ceram. Soc. 57 (4) (1974) 154.
M. F. Kaplan, Proceedings of the International Conference on Structure of Concrete, Paper D7, London (1965).
G. M. Bartener, Paper A-25, First International Conference, Fracture, Vol. 1, Sendai, Japan (1965).
D. J. Green, P. S. Nicholson and J. D. Embury, “Fracture Mechanics of Ceramics”, Vol. 2, edited by R. C. Bradt et al. (Plenum Press, New York, 1974) p. 541.
D. J. Green, PhD Thesis, McMaster University, Hamilton, Ontario, Canada (1976).
K. D. Kingery, “Introduction to Ceramics” 3rd edn. (Academic Press, New York, 1976).
R. G. Hoagland, J. D. Embury and D. J. Green, Scripta Met. 9 (1975) 907.
F. F. Lange, Phil. Mag. 16 (1967) 761.
S. M. Ohlberg, H. R. Gelob and C. M. Hallabagh, J. Amer. Ceram. Soc. 45 (1962) 61.
F. F. Lange, ibid 54 (1971) 614.
Idem, Phil. Mag. 22 (1970) 983.
R. B. Thomson, Ann. Rev. Mater. Sci. 3 (1973) 31.
A. G. Evans, Phil. Mag. 26 (1979) 1327.
J. N. Goodier, J. Appl. Mech. 1 (1933) 39.
A. K. Khaund, V. D. Krstic and P. S. Nicholson, J. Mater. Sci. 12 (1977) 2269.
D. J. Green, P. S. Nicholson and J. D. Embury, ibid 12 (1977) 987.
S. Sahu and L. J. Broutman, Polymer Eng. Sci. 12 (1972) 91.
D. F. Weirauch, Amer. Ceram. Soc. Bull. 57 (1978) 420.
V. Weiss, ASME Paper no. 62, WA-270 (1962).
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Khaund, A.K., Nicholson, P.S. Fracture of a brittle composite: influence of elastic mismatch and interfacial bonding. J Mater Sci 15, 177–187 (1980). https://doi.org/10.1007/BF00552443
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DOI: https://doi.org/10.1007/BF00552443