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RESEARCH PAPERS

Fatigue Crack Growth in SA508-CL2 Steel in a High Temperature, High Purity Water Environment

[+] Author and Article Information
T. L. Gerber, J. D. Heald, E. Kiss

Applied Mechanics and Statistics Unit, Nuclear Energy Division, General Electric Co., San Jose, Calif.

J. Eng. Mater. Technol 96(4), 255-260 (Oct 01, 1974) (6 pages) doi:10.1115/1.3443239 History: Received January 15, 1974; Revised March 01, 1974; Online August 17, 2010

Abstract

Fatigue crack growth tests were conducted with 1 in. (25.4 mm) plate specimens of SA508-CL2 steel in room temperature air, 550 deg F (288 deg C) air and in a 550 deg F (288 deg C), high purity, water environment. Zero-tension load controlled tests were run at cyclic frequencies as low as 0.037 CPM. Results show that growth rates in the simulated Boiling Water Reactor (BWR) water environment are 4 to 8 times faster than growth rates observed in 550 deg F (288 deg C) air and these rates are 8 to 15 times faster than the room temperature rate. In the BWR water environment, lowering the cyclic frequency from 0.37 CPM to 0.037 CPM caused only a slight increase in the fatigue crack growth rate. All growth rates measured in these tests were below the upper bound design curve presented in Section XI of the ASME Code.

Copyright © 1974 by ASME
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