The isothermal fatigue behavior of a high-activity aluminide-coated single-crystal superalloy was studied in air at test temperatures of 600 °, 800 °, and 1000 °. Tests were performed using cylindrical specimens under strain control at ≈0.25 Hz; total strain ranges from 0.5 to 1.6 pct were investigated. At 600 °, crack initiation occurred at brittle coating cracks, which led to a significant reduction in fatigue life compared to the uncoated alloy. Fatigue cracks grew from the brittle coating cracks initially in a stage II manner with a subsequent transition to crystallographic stage I fatigue. At 800 ° and 1000 °, the coating failed quickly by a fatigue process due to the drastic reduction in strength above 750 °, the ductile-brittle transition temperature. These cracks were arrested or slowed by oxidation at the coating-substrate interface and only led to a detriment in life relative to the uncoated material for total strain ranges of 1.2 pct and above 800 °. The presence of the coating was beneficial at 800 ° for total strain ranges less than 1.2 pct. No effect of the coating was observed at 1000 °. Crack growth in the substrate at 800 ° was similar to 600 °; at 1000 °, greater plasticity and oxidation were observed and cracks grew exclusively in a stage II manner.
This is a preview of subscription content, access via your institution.
Buy single article
Instant access to the full article PDF.
Price excludes VAT (USA)
Tax calculation will be finalised during checkout.
G.W. Meetham:Mater. Sci. Technol., 1986, vol. 2, pp. 290–94.
R. Sivakumar and B.L. Mordike:Surf. Coat. Technol., 1989, vol. 37, pp. 139–60.
J.-M. Veys and R. Mevrel:Mater. Sci. Eng., 1987, vol. 88, pp. 253- 60.
M.I. Wood:Surf. Coat. Technol., 1989, vols. 39-40, pp. 29–42.
G.W. Goward and D.H. Boone:Oxid. Met., 1971, vol. 3, pp. 475–95.
A. Ball and R.E. Smallman:Acta Metall., 1966, vol. 14, pp. 1349–55.
T.C. Totemeier, W.F. Gale, and J.E. King:Mater. Sci. Eng., 1993, vol. A169, pp. 19–26.
F.J. Pennisi and D.K. Gupta:Thin Solid Flims, 1981, vol. 84, pp. 49- 58.
W.F. Gale and J.E. King:Metall. Trans. A, 1992, vol. 23A, pp. 2657- 65.
S. Suresh:Fatigue of Materials, Cambridge University Press, Cambridge, United Kingdom, 1991, pp. 136–40.
T.N. Rhys-Jones and D.F. Bettridge: inAdvanced Materials and Processing Techniques for Structural Applications, T. Khan and A. Lasalmonie, eds., ONERA, Chatillon, France, 1988, pp. 129–58.
P. Hancock, H.H. Chien, J.R. Nicholls, and DJ. Stephenson:Surf Coat. Technol, 1990, vols. 43-44, pp. 359–70.
T.C. Totemeier: Ph.D. Thesis, University of Cambridge, Cambridge, United Kingdom, 1994.
M.I. Wood: inAdvanced Materials and Processing Techniques for Structural Applications, T. Khan and A. Lasalmonie, eds., ONERA, Chatillon, France, 1988, pp. 179–88.
G.R. Leverant and M. Gell:Metall. Trans. A, 1975, vol. 6A, pp. 367- 71.
B.F. Antolovich, A. Saxena, and S.D. Antolovich: inSuperalloys 1992, S.D. Antolovich, R.W. Strusrud, R.A. MacKay, D.L. Anton, T. Khan, R.D. Kissinger, and D.L. Klarstrom, eds., TMS, Warrendale, PA, 1992, pp. 727–36.
A. Defresne and L. Rémy:Mater. Sci. Eng., 1990, vol. A129, pp. 55- 64.
J.S. Crompton and J.W. Martin:Metall. Trans. A, 1984, vol. 15A, pp. 1711–19.
A. Diboine, J.M. Peltier, and R.M. Pelloux: inHigh Temperature Fracture Mechanisms and Mechanics, P. Bensussam ed., Mechanical Engineering Publications, Bury St Edmunds, United Kingdom, 1990, pp. 421–46.
E. Fleury and L. Rémy:Mater. Sci. Eng., 1993, vol. A167, pp. 23- 30.
G.R. Leverant and M. Gell:Trans. TMS-AIME, 1969, vol. 245, pp. 1167–73.
D.P. Rooke and D.J. Cartwright:Compendium of Stress Intensity Factors, Her Majesty's Stationery Office, London, 1976, pp. 237–38.
Rolls-Royce plc, Derby, United Kingdom, personal communication, 1992.
H.J. Kolkman:Mater. Sci. Eng., 1987, vol. 89, pp. 81–91.
G.A. Whitlow, R.L. Johnson, W.H. Pridemore, and J.M. Allen:J. Eng. Mater. Technol, 1984, vol. 106, pp. 43–49.
C.H. Wells and C.P. Sullivan:Trans. ASM, 1968, vol. 61, pp. 149- 53.
A. Strang and E. Lang: inHigh Temperature Alloys for Gas Turbines 1982, R. Brunetaud, D. Coutsouradis, T.B. Gibbons, Y. Lindblom, D.B. Meadowcroft, and R. Stickler, eds., D. Reidel Publishing Co., Dordrecht, United Kingdom, 1982, pp. 469–506.
H.W. Grünling, K. Schneider, and L. Singheiser:Mater. Sci. Eng., 1987, vol. 88, pp. 177–89.
J. Gayda, T.P. Gabb, and R.V. Miner: inSuperalloys 1988, S. Reichman, D.N. Duhl, G. Maurer, S. Antolovich, and C. Lund, eds., TMS, Warrendale, PA, 1988, pp. 575–84.
A.J.A. Mom and H.J.C. Hersbach:Mater. Sci. Eng., 1987, vol. 87, pp. 361–67.
Formerly Research Student, Department of Materials Science and Metallurgy, University of Cambridge.
Formerly Lecturer, Department of Materials Science and Metallurgy, University of Cambridge CB2 3QZ, United Kingdom.
Rights and permissions
About this article
Cite this article
Totemeier, T.C., King, J.E. Isothermal fatigue of an aluminide-coated single-crystal superalloy: Part I. Metall Mater Trans A 27, 353–361 (1996). https://doi.org/10.1007/BF02648412
- Material Transaction
- Fatigue Crack
- Fatigue Life
- Fatigue Crack Growth