The creep behavior of single crystals of γ′ and γ alloys were investigated and compared to the response of two phase superalloys tested previously. High temperature deformation in the γ alloys was characteristic of a climb controlled mechanism, whereas the γ′ based materials exhibited glide controlled creep behavior. The superalloys were much more creep resistant than their constituent phases, which indicates the importance of the γ-γ′ interface as a barrier for dislocation motion during creep.
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W.D. Nix and B. Ilschner, in 5th Int. Conf. Strength of Metals and Alloys, ed. by P. Hassen, et al., Pergamon Press, 3, 1980, p. 1503.
S.M. Copely and B.H. Kear, Trans. TMS-AIME, 239, 1967, p.984
R.G. Davies and T.L. Johnson, in Proc. 3rd Bolton Landing Conf. on Ordered Alloys, ed. by B. H. Kear et al., Claitors, Baton Rouge, 1970, p. 447.
D.P. Pope and S.S. Ezz, Int. Metals Reviews, 29, 1984, p. 136
M.V. Nathal and L.J. Ebert, Metall. Trans., 16A, 1985, p. 427.
R.A. MacKay and M.V. Nathal, in MiCon 86: Optimization of Processing, Properties, and Service Performance Through Microstructural Control, ASTM STP979, ed. by B. L. Bramfitt et al., 1988, p. 202.
M.V. Nathal and L.J. Ebert, Metall. Trans., 16A, 1985, p. 1849 and p. 1863.
M.V. Nathal, Metall. Trans., 18A, 1987, p. 1961.
C.K.L. Davies, P.W. Davies, and B. Wilshire, Phil. Mag., 12, 1965, p.827.
W.R. Johnson, C.R. Barrett and W.D. Nix, Metall. Trans., 3, 1972, p. 963.
J.H. Schneibel and J.A. Horton, J. Mater. Res., 3, 1988, p. 651.
D.M. Shah, Scripta Metall., 17, 1983, p. 997.
O.G. Sherby, R.H. Klundt, and A.K. Miller, Met. Trans., 8A, 1977, p. 843.
J. Weertman and B. Shahinian, Trans. TMS-AIME, 206, 1956, p.1223.
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Nathal, M.V., Diaz, J.O. & Miner, R.V. High Temperature Creep Behavior of Single Crystal Gammpraime and Gamm Laloys. MRS Online Proceedings Library 133, 269 (1988). https://doi.org/10.1557/PROC-133-269