NDLI: Fatigue Life of the Strain Hardened Austenitic Stainless Steel in Simulated PWR Primary Water

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Tsutsumi, Kazuya Huin, Nicolas Couvant, Thierry Henaff, Gilbert Mendez, Jose Chollet, Denis
Copyright Year	2012
Abstract	Over the last 20 years or so, many studies have revealed the deleterious effect of the environment on fatigue life of austenitic stainless steels in pressurized water reactor (PWR) primary water. The fatigue life correlation factor, so-called Fen, has been standardized to consider the effect on fatigue life evaluation. The formulations are function of strain rate and temperature due to their noticeable negative effect compared with other factors [1,2]. However, mechanism causing fatigue life reduction remains to be cleared. As one of possible approaches to examine underlying mechanism of environmental effect, the authors focused on the effect of plastic strain, because it could lead microstructural evolution on the material. In addition, in the case of stress corrosion cracking (SCC), it is well known that the strain-hardening prior to exposure to the primary water can lead to remarkable increase of the susceptibility to cracking [3,4]. However, its effect on fatigue life has not explicitly been investigated yet. The main effort in this study addressed the effect of the prior strain-hardening on low cycle fatigue life of 304L stainless steel (SS) exposed to the PWR primary water. A plate of 304LSS was strain hardened by cold rolling or tension prior to fatigue testing. The tests were performed under axial strain-controlled at 300 °C in primary water including B/Li and dissolved hydrogen, and in air. The effect on environmental fatigue life was investigated through a comparison of the Fen in experiments and in regulations, and also the effect on the fatigue limit defined at 106 cycles was discussed.
Sponsorship	Pressure Vessels and Piping Division
Starting Page	155
Ending Page	164
Page Count	10
File Format	PDF
ISBN	9780791855003
DOI	10.1115/PVP2012-78301
Volume Number	Volume 1: Codes and Standards
Conference Proceedings	ASME 2012 Pressure Vessels and Piping Conference
Language	English
Publisher Date	2012-07-15
Publisher Place	Toronto, Ontario, Canada
Access Restriction	Subscribed
Subject Keyword	Water Fatigue life Cracking (materials) Cycles Regulations Fatigue testing Temperature Work hardening Hydrogen Fatigue limit Stress corrosion cracking Low cycle fatigue Cold rolling Fracture (process) Stainless steel Tension Pressurized water reactors
Content Type	Text
Resource Type	Article

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