BOKU - Universität für Bodenkultur Wien - Forschungsinformationssystem

Gewählte Publikation:

Schonbauer, BM; Stanzl-Tschegg, SE; Perlega, A; Salzman, RN; Rieger, NF; Turnbull, A; Zhou, SQ; Lukaszewicz, M; Gandy, D.
(2015): The influence of corrosion pits on the fatigue life of 17-4PH steam turbine blade steel
ENG FRACT MECH. 2015; 147: 158-175. FullText FullText_BOKU

Fatigue life tests on smooth and pre-pitted specimens and near threshold fatigue crack growth rate measurements are performed on 17-4PH steam turbine blade steel. The influence of environment and stress ratio is investigated. A decrease in the fatigue life and a slowdown of the crack growth rate in the near threshold regime is found in salt solution compared to air. The latter can be explained by oxide-induced crack closure. The critical stresses for fatigue failure in the presence of corrosion pits can be calculated using a methodology that was already successfully applied to 12% Cr steam turbine blade steel. (C) 2015 Elsevier Ltd. All rights reserved.
Autor*innen der BOKU Wien:
Perlega Andrea
Schönbauer Bernd
Tschegg Stefanie

Find related publications in this database (Keywords)
Corrosion fatigue
Pitting corrosion
Very high cycle fatigue
Small fatigue crack growth
17-4PH stainless steel

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