Ultrasonic fatigue of a nickel-base turbine disk alloy at room and elevated temperatures

A. Shyam; C. J. Torbet; C. J. Szczepanski; S. K. Jha; M. J. Caton; T. M. Pollock

Ultrasonic fatigue of a nickel-base turbine disk alloy at room and elevated temperatures

A. Shyam, C. J. Torbet, C. J. Szczepanski, S. K. Jha, M. J. Caton, T. M. Pollock

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

3 Scopus citations

Abstract

Understanding the relationship between fatigue damage and the underlying microstructure is of paramount importance to predict the response of a turbine disk alloy under service conditions. The recent development of ultrasonic fatigue techniques allows rapid determination of microstructural neighborhoods that are responsible for initiation of fatigue damage. An ultrasonic fatigue testing system capable of testing at temperatures as high as 800°C and at positive mean stresses will be described. The characterization of ultrasonic (20 kHz) fatigue behavior of the nickel-base superalloy Rene' 88 DT in the lifetime regime of 105 to 109 at 20 and 593°C with a stress-ratio of 0.05 is described. The crack initiation sites in this alloy were favorably oriented large grains and inclusions. Small crack growth behavior obtained by initiating cracks from micronotches machined with femtosecond pulsed lasers was studied.

Original language	English
Title of host publication	Materials Damage Prognosis - Proceedings of a Symposium sponsored by the Structural Materials Division of the TMS held during the Materials Science and Technology 2004 Conference
Editors	J.M. Larsen, L. Christodoulou, J.R. Calcaterra, M.L. Dent, M.M. Derriso, W.J. Hardman, J. Wayne Jones, S.M. Rusa
Pages	247-252
Number of pages	6
State	Published - 2005
Externally published	Yes
Event	Materials Damage Prognosis - a Symposium of the Materials Science and Technology 2004 Conference - New Orleans, LA, United States Duration: Sep 26 2004 → Sep 30 2004

Publication series

Name	Materials Damage Prognosis - Proceedings of a Symposium of the Materials Science and Technology 2004 Conference

Conference

Conference	Materials Damage Prognosis - a Symposium of the Materials Science and Technology 2004 Conference
Country/Territory	United States
City	New Orleans, LA
Period	09/26/04 → 09/30/04

Keywords

Crack Initiation
Crack Propagation
Small Fatigue Cracks
Ultrasonic Fatigue

Cite this

Shyam, A., Torbet, C. J., Szczepanski, C. J., Jha, S. K., Caton, M. J., & Pollock, T. M. (2005). Ultrasonic fatigue of a nickel-base turbine disk alloy at room and elevated temperatures. In J. M. Larsen, L. Christodoulou, J. R. Calcaterra, M. L. Dent, M. M. Derriso, W. J. Hardman, J. Wayne Jones, & S. M. Rusa (Eds.), Materials Damage Prognosis - Proceedings of a Symposium sponsored by the Structural Materials Division of the TMS held during the Materials Science and Technology 2004 Conference (pp. 247-252). (Materials Damage Prognosis - Proceedings of a Symposium of the Materials Science and Technology 2004 Conference).

Shyam, A. ; Torbet, C. J. ; Szczepanski, C. J. et al. / Ultrasonic fatigue of a nickel-base turbine disk alloy at room and elevated temperatures. Materials Damage Prognosis - Proceedings of a Symposium sponsored by the Structural Materials Division of the TMS held during the Materials Science and Technology 2004 Conference. editor / J.M. Larsen ; L. Christodoulou ; J.R. Calcaterra ; M.L. Dent ; M.M. Derriso ; W.J. Hardman ; J. Wayne Jones ; S.M. Rusa. 2005. pp. 247-252 (Materials Damage Prognosis - Proceedings of a Symposium of the Materials Science and Technology 2004 Conference).

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title = "Ultrasonic fatigue of a nickel-base turbine disk alloy at room and elevated temperatures",

abstract = "Understanding the relationship between fatigue damage and the underlying microstructure is of paramount importance to predict the response of a turbine disk alloy under service conditions. The recent development of ultrasonic fatigue techniques allows rapid determination of microstructural neighborhoods that are responsible for initiation of fatigue damage. An ultrasonic fatigue testing system capable of testing at temperatures as high as 800°C and at positive mean stresses will be described. The characterization of ultrasonic (20 kHz) fatigue behavior of the nickel-base superalloy Rene' 88 DT in the lifetime regime of 105 to 109 at 20 and 593°C with a stress-ratio of 0.05 is described. The crack initiation sites in this alloy were favorably oriented large grains and inclusions. Small crack growth behavior obtained by initiating cracks from micronotches machined with femtosecond pulsed lasers was studied.",

keywords = "Crack Initiation, Crack Propagation, Small Fatigue Cracks, Ultrasonic Fatigue",

author = "A. Shyam and Torbet, {C. J.} and Szczepanski, {C. J.} and Jha, {S. K.} and Caton, {M. J.} and Pollock, {T. M.}",

year = "2005",

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pages = "247--252",

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booktitle = "Materials Damage Prognosis - Proceedings of a Symposium sponsored by the Structural Materials Division of the TMS held during the Materials Science and Technology 2004 Conference",

note = "Materials Damage Prognosis - a Symposium of the Materials Science and Technology 2004 Conference ; Conference date: 26-09-2004 Through 30-09-2004",

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Shyam, A, Torbet, CJ, Szczepanski, CJ, Jha, SK, Caton, MJ & Pollock, TM 2005, Ultrasonic fatigue of a nickel-base turbine disk alloy at room and elevated temperatures. in JM Larsen, L Christodoulou, JR Calcaterra, ML Dent, MM Derriso, WJ Hardman, J Wayne Jones & SM Rusa (eds), Materials Damage Prognosis - Proceedings of a Symposium sponsored by the Structural Materials Division of the TMS held during the Materials Science and Technology 2004 Conference. Materials Damage Prognosis - Proceedings of a Symposium of the Materials Science and Technology 2004 Conference, pp. 247-252, Materials Damage Prognosis - a Symposium of the Materials Science and Technology 2004 Conference, New Orleans, LA, United States, 09/26/04.

Ultrasonic fatigue of a nickel-base turbine disk alloy at room and elevated temperatures. / Shyam, A.; Torbet, C. J.; Szczepanski, C. J. et al.
Materials Damage Prognosis - Proceedings of a Symposium sponsored by the Structural Materials Division of the TMS held during the Materials Science and Technology 2004 Conference. ed. / J.M. Larsen; L. Christodoulou; J.R. Calcaterra; M.L. Dent; M.M. Derriso; W.J. Hardman; J. Wayne Jones; S.M. Rusa. 2005. p. 247-252 (Materials Damage Prognosis - Proceedings of a Symposium of the Materials Science and Technology 2004 Conference).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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T1 - Ultrasonic fatigue of a nickel-base turbine disk alloy at room and elevated temperatures

AU - Shyam, A.

AU - Torbet, C. J.

AU - Szczepanski, C. J.

AU - Jha, S. K.

AU - Caton, M. J.

AU - Pollock, T. M.

PY - 2005

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AB - Understanding the relationship between fatigue damage and the underlying microstructure is of paramount importance to predict the response of a turbine disk alloy under service conditions. The recent development of ultrasonic fatigue techniques allows rapid determination of microstructural neighborhoods that are responsible for initiation of fatigue damage. An ultrasonic fatigue testing system capable of testing at temperatures as high as 800°C and at positive mean stresses will be described. The characterization of ultrasonic (20 kHz) fatigue behavior of the nickel-base superalloy Rene' 88 DT in the lifetime regime of 105 to 109 at 20 and 593°C with a stress-ratio of 0.05 is described. The crack initiation sites in this alloy were favorably oriented large grains and inclusions. Small crack growth behavior obtained by initiating cracks from micronotches machined with femtosecond pulsed lasers was studied.

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KW - Crack Propagation

KW - Small Fatigue Cracks

KW - Ultrasonic Fatigue

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T3 - Materials Damage Prognosis - Proceedings of a Symposium of the Materials Science and Technology 2004 Conference

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BT - Materials Damage Prognosis - Proceedings of a Symposium sponsored by the Structural Materials Division of the TMS held during the Materials Science and Technology 2004 Conference

A2 - Larsen, J.M.

A2 - Christodoulou, L.

A2 - Calcaterra, J.R.

A2 - Dent, M.L.

A2 - Derriso, M.M.

A2 - Hardman, W.J.

A2 - Wayne Jones, J.

A2 - Rusa, S.M.

T2 - Materials Damage Prognosis - a Symposium of the Materials Science and Technology 2004 Conference

Y2 - 26 September 2004 through 30 September 2004

ER -

Shyam A, Torbet CJ, Szczepanski CJ, Jha SK, Caton MJ, Pollock TM. Ultrasonic fatigue of a nickel-base turbine disk alloy at room and elevated temperatures. In Larsen JM, Christodoulou L, Calcaterra JR, Dent ML, Derriso MM, Hardman WJ, Wayne Jones J, Rusa SM, editors, Materials Damage Prognosis - Proceedings of a Symposium sponsored by the Structural Materials Division of the TMS held during the Materials Science and Technology 2004 Conference. 2005. p. 247-252. (Materials Damage Prognosis - Proceedings of a Symposium of the Materials Science and Technology 2004 Conference).

Ultrasonic fatigue of a nickel-base turbine disk alloy at room and elevated temperatures

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Keywords

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