Influence of surface treatments on fretting fatigue of Ti-6242 at elevated temperatures

Swati Chakravarty, Jason P. Dyer, Joseph C. Conway, Albert Eliot Segall, Prakash C. Patnaik

Research output: Contribution to journalConference article

14 Citations (Scopus)

Abstract

Where fretting fatigue of titanium alloy gas turbine engine component is concerned, the effect of temperature on fretting processes can be quite significant. Service exposed third stage compressor blades, operating at 454 °C or 850 °F, showed severe signs of fretting, wear, CuNiIn coating delamination, oxidation and pitting on the dovetail pressure surfaces. Under cyclic loading conditions fretting fatigue cracks, initiated in these damaged areas, can cause dramatic reduction in fatigue life of these components leading to potential catastrophic failure. A study has been carried out to evaluate the influence of various surface treatments, such as ion treatments, coatings and shot peening, on the fretting fatigue life of titanium alloy gas turbine engine components at elevated temperature. Results from high temperature fretting fatigue and pin-on-disk wear tests are discussed in this paper. Significant contrast between the wear and fatigue test results illustrates the potential dangers of using sliding wear tests to rank surface treatments for fretting fatigue amelioration.

Original languageEnglish (US)
Pages (from-to)491-505
Number of pages15
JournalASTM Special Technical Publication
Issue number1367
StatePublished - Jan 1 2000
EventThe 2nd International Symposium on Fretting Fatigue: Current Technology and Practices - Salt Lake City, UT, USA
Duration: Aug 31 1998Aug 31 1998

Fingerprint

Surface treatment
Fatigue of materials
Wear of materials
Titanium alloys
Temperature
Gas turbines
Turbines
Coatings
Shot peening
Pitting
Delamination
Turbomachine blades
Compressors
Oxidation
Ions

All Science Journal Classification (ASJC) codes

  • Engineering(all)

Cite this

Chakravarty, S., Dyer, J. P., Conway, J. C., Segall, A. E., & Patnaik, P. C. (2000). Influence of surface treatments on fretting fatigue of Ti-6242 at elevated temperatures. ASTM Special Technical Publication, (1367), 491-505.
Chakravarty, Swati ; Dyer, Jason P. ; Conway, Joseph C. ; Segall, Albert Eliot ; Patnaik, Prakash C. / Influence of surface treatments on fretting fatigue of Ti-6242 at elevated temperatures. In: ASTM Special Technical Publication. 2000 ; No. 1367. pp. 491-505.
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Influence of surface treatments on fretting fatigue of Ti-6242 at elevated temperatures. / Chakravarty, Swati; Dyer, Jason P.; Conway, Joseph C.; Segall, Albert Eliot; Patnaik, Prakash C.

In: ASTM Special Technical Publication, No. 1367, 01.01.2000, p. 491-505.

Research output: Contribution to journalConference article

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AU - Chakravarty, Swati

AU - Dyer, Jason P.

AU - Conway, Joseph C.

AU - Segall, Albert Eliot

AU - Patnaik, Prakash C.

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N2 - Where fretting fatigue of titanium alloy gas turbine engine component is concerned, the effect of temperature on fretting processes can be quite significant. Service exposed third stage compressor blades, operating at 454 °C or 850 °F, showed severe signs of fretting, wear, CuNiIn coating delamination, oxidation and pitting on the dovetail pressure surfaces. Under cyclic loading conditions fretting fatigue cracks, initiated in these damaged areas, can cause dramatic reduction in fatigue life of these components leading to potential catastrophic failure. A study has been carried out to evaluate the influence of various surface treatments, such as ion treatments, coatings and shot peening, on the fretting fatigue life of titanium alloy gas turbine engine components at elevated temperature. Results from high temperature fretting fatigue and pin-on-disk wear tests are discussed in this paper. Significant contrast between the wear and fatigue test results illustrates the potential dangers of using sliding wear tests to rank surface treatments for fretting fatigue amelioration.

AB - Where fretting fatigue of titanium alloy gas turbine engine component is concerned, the effect of temperature on fretting processes can be quite significant. Service exposed third stage compressor blades, operating at 454 °C or 850 °F, showed severe signs of fretting, wear, CuNiIn coating delamination, oxidation and pitting on the dovetail pressure surfaces. Under cyclic loading conditions fretting fatigue cracks, initiated in these damaged areas, can cause dramatic reduction in fatigue life of these components leading to potential catastrophic failure. A study has been carried out to evaluate the influence of various surface treatments, such as ion treatments, coatings and shot peening, on the fretting fatigue life of titanium alloy gas turbine engine components at elevated temperature. Results from high temperature fretting fatigue and pin-on-disk wear tests are discussed in this paper. Significant contrast between the wear and fatigue test results illustrates the potential dangers of using sliding wear tests to rank surface treatments for fretting fatigue amelioration.

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