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

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

Research output: Contribution to journalConference article

14 Scopus citations

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

All Science Journal Classification (ASJC) codes

  • Engineering(all)

Fingerprint Dive into the research topics of 'Influence of surface treatments on fretting fatigue of Ti-6242 at elevated temperatures'. Together they form a unique fingerprint.

  • 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.