Abstract
The influence of a duplex microstructure on fatigue crack growth in the near threshold region has been studied for AISI types 1018, 1045, and 10B35, as well as 2.25 Cr-1 Mo steels. For a duplex microstructure which consists of a continuous martensitic phase encapsulating ferrite, an increase in threshold level and yield strength in both the AISI 1018 and 2.25 Cr-1 Mo steels was observed. However, with increase in carbon content and consequent decrease in the volume of ferrite, the threshold levels were not as significantly affected, although the yield strengths were higher.
Similar content being viewed by others
References
R. G. Davies: “Formable HSLA and Dual-Phase Steel”, A. T. Davenport, ed.,TMS-AIME, 1979, p. 25.
K. Minakawa and A. J. McEvily: “Strength of Metals and Alloys”,Proc. 5th Int. Conf. on the Strength of Metals and Alloys, Pergamon Press, 1979, vol. 2, p. 1145.
H. Suzuki and A. J. McEvily:Metall. Trans. A, 1979, vol. 10A, p. 475.
ASTM E647-78T,Annual Book of ASTM Standards, 1978, vol. 10, p. 703.
M. Kikukawa, M. Jono, and H. Hora:Int. Journ. of Fracture, 1977, vol. 13, p. 699.
R. O. Ritchie, C. M. Moss, and G. F. Zamiski:Trans, of the ASME, 1980, vol. 102, p. 293.
A. Otsuka, K. Mori, and T. Miyata:Eng. Fracture Mech., 1975, vol. 7, p. 429.
K. Minakawa and A. J. McEvily: “Fatigue Thresholds”,Preliminary Proc. Int. Symp. on Fatigue Thresholds, The Aeronautical Research Institute of Sweden and The Swedish Plastics and Rubber Institute, 1981, vol. 2, pp. 36-1.
R. O. Ritchie:Metal Sci., 1977, vol. 11, p. 368.
R. J. Cooke, P. E. Irving, G. S. Booth, and C. J. Beevers:Eng. Fracture Mech., 1975, vol. 7, p. 69.
J. Masounave and J. P. Bailon:Scripta Met., 1976, vol. 10, p. 165.
E. Sasaki, A. Ohta, and M. Kosuge:Trans. Nat. Res. Inst. for Metals, 1977, vol. 19, no.4, p. 29.
W. Elber:Eng. Fracture Mech., 1970, vol. 2, p. 37.
W. Elber:ASTM STP 486, 1971, p. 230.
T. C. Lindley and C. E. Richards:Mater. Sci. Eng., 1974, vol. 14, p. 281.
A. Otsuka, K. Mori, and T. Kawamura:Journ. Japan Soc. Mech. Eng., 1979, vol. 45, no. 399, p. 1312.
A. J. McEvily:Metal Sci., 1977, vol. 11, p. 274.
H. Mughrabi: “Strength of Metals and Alloys”,Proc. 5th Int. Conf. on the Strength of Metals and Alloys, Pergamon Press, 1979, vol. 3, p. 1615.
J. Ruppen and A. J. McEvily. unpublished research, University of Connecticut, Storrs, CT, 1980.
K. Minakawa and A. J. McEvily:Scripta Met., 1981, vol. 15, p. 633.
A. J. McEvily: “Recent Research on Mechanical Behavior of Solids”, University of Tokyo Press, 1979, p. 329.
Author information
Authors and Affiliations
Additional information
Y. MATSUO, formerly Graduate Student, University of Connecticut
Rights and permissions
About this article
Cite this article
Minakawa, K., Matsuo, Y. & McEVILY, A.J. The influence of a duplex microstructure in steels on fatigue crack growth in the near-threshold region. Metall Trans A 13, 439–445 (1982). https://doi.org/10.1007/BF02643352
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF02643352