Abstract
The creep characteristics, including the nature of the creep transient after a stress reduction and activation energy for creep of single crystalline Ni3Al(Ta,B) in the temperature range 1083 to 1388 K, were investigated. An inverse type of creep transient is exhibited during stress reduction tests in the creep regime where the stress exponent is equal to 3.2. The activation energy for creep in this regime is equal to 340 kJ mol−1. A normal type of creep transient is observed during stress reduction tests in the regime where the stress exponent is equal to 4.3. The activation energy for creep in this regime is equal to 530 kJ mol−1. The different transient creep behavior and activation energies for creep observed in this investigation are consistent with the previous suggestion that then = 4.3 regime is associated with creep controlled by dislocation climb, whereas then = 3.2 regime is associated with a viscous dislocation glide process for Ni3Al at high temperatures.
Similar content being viewed by others
References
K.J. Hemker and W.D. Nix:Proc. 4th Int. Conf. on Creep and Fracture of Engineering Materials and Structures, B. Wilshire and R.W. Evans, eds., Institute of Metals, London, 1990,pp. 51–63.
K.J. Hemker and W.D. Nix:Metall. Trans. A, 1993, vol. 24A, pp. 335–41.
J. Wolfenstine, H.K. Kim, and J.C. Earthman:Scripta Metall. Mater., 1992, vol. 26, pp. 1823–28.
J. Wolfenstine, H.K. Kim, and J.C. Earthman:J. Mater. Res., 1993, vol. 8, pp. 2510–14.
R.W. Dickson, J.B. Wachtman, Jr, and S.M. Copley:J. Appl. Phys., 1969, vol. 40, pp. 2276–79.
F.A. Mohamed and T.G. Langdon:Acta Metall., 1974, vol. 22, pp. 779–88.
S. Takeuchi and A.S. Argon:J. Mater. Sci., 1976, vol. 11, pp. 1542–66.
M.S. Soliman and F.A. Mohamed:Metall. Trans. A, 1984, vol. 15A, pp. 1893–1904.
T.T. Fang, R. Rao Kola, and K.L. Murty:Metall. Trans. A, 1986, vol. 17A, pp. 1447–53.
O.D. Sherby and P.M. Burke:Prog. Mater. Sci, 1967, vol. 13, pp. 325–90.
H. Oikawa, K. Sugawara, and S. Karashima:Mater. Trans. JIM, 1978, vol. 19, pp. 611–16.
J. Cadek:Creep in Metallic Materials, Elsevier, New York, NY,1988, pp. 115–74.
P.A. Flinn:Trans. AIME, 1960, vol. 218, pp. 145–54.
J.R. Nicholls and R.D. Rawlings:J. Mater. Sci., 1977, vol. 12, pp. 2456–64.
M.V. Nathal, J.O. Diaz, and R.V. Miner:MRS Symp. Proc, 1989, vol. 133, pp. 269–74.
H.S. Yang, P. Jin, and A.K. Mukherjee:Mater. Trans. JIM, 1992, vol. 33, pp. 38–44.
G.F. Hancock:Phys. Status Solidi A, 1971, vol. 7, pp. 535–40.
K. Hoshino, S.J. Rothman, and R.S. Averback:Acta Metall., 1988, vol. 36, pp. 267–81.
M.B. Bronfin, G.S. Bulatov, and I.A. Drugova:Fiz. Metall., 1975, vol. 40, pp. 363–66.
T.C. Chou and Y.T. Chou:MRS Symp. Proc, 1985, vol. 39, pp. 461–67.
O.D. Sherby and M.T. Simnad:Trans. ASM, 1961, vol. 54, pp. 227–40.
A.M. Brown and M.F. Ashby:Acta Metall., 1980, vol. 28, pp. 1085–1101.
J.R. Cahoon and O.D. Sherby:Metall. Trans. A, 1992, vol. 23A, pp. 2491–2500.
M. Kiowa:Ordered Intermetallics—Physical and Mechanical Behavior, C.T. Liu, R.W. Cahn, and G. Sauthoff, eds., Kluwer Academic, Boston, MA, 1991, vol. 213, pp. 449–64.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Wolfenstine, J., Kim, H.K. & Earthman, J.C. Creep characteristics of single crystalline Ni3Al(Ta,B). Metall Mater Trans A 25, 2477–2482 (1994). https://doi.org/10.1007/BF02648866
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF02648866