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Fatigue crack propagation in types 304 and 308 stainless steel at elevated temperatures

Journal Article · · Nucl. Technol.; (United States)
OSTI ID:5244804
The fatigue crack-growth behavior of Type 304 stainless-steel base metal and Type 308 stainless-steel weld metal at elevated temperature was investigated using axially loaded single-edge-notch specimens. The crack-growth rates were determined and are presented as a function of the stress-intensity factor range. Both the base- and weld-metal specimens were tested in the as-received (or as-welded) and thermally aged condition. The results indicate that the crack-growth rates in the weld metal are significantly lower than in the base metal. In addition, aging at 593/sup 0/C for 1000 h improved the resistance to fatigue crack growth in both the base and weld metals.
Research Organization:
Argonne National Lab., IL
OSTI ID:
5244804
Journal Information:
Nucl. Technol.; (United States), Journal Name: Nucl. Technol.; (United States) Vol. 34:1; ISSN NUTYB
Country of Publication:
United States
Language:
English