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Ultrasonic fatigue tests at high temperature on an austenitic steel

Article dans une revue avec comité de lecture
Author
WAGNER, D
CAVALIERI, F.J
BATHIAS, Claude
116205 Université Paris Nanterre [UPN]
ccRANC, Nicolas
86289 Laboratoire Procédés et Ingénierie en Mécanique et Matériaux [PIMM]

URI
http://hdl.handle.net/10985/10079
DOI
10.1016/j.jppr.2012.10.008
Date
2012
Journal
Propulsion and Power Research

Abstract

The objective of this paper is to study the gigacycle fatigue behavior of an austenitic steel at temperatures of 600 °C and 700 °C under fully reverse loading (R=−1). Numerical simulation by finite element method (FEM) was used to design the specimens and to analyze the effects of the variation in the dynamic Young modulus with temperature from measurements of the ultrasonic resonance frequency. Finally, new stress-life curves for this material are presented for a lifetime range from 105 to 109 cycles at room temperature, 600 °C and 700 °C.

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