A Criterion to predict under what conditions EAC would initiate in cracks in a high-sulfur steel in contact with low-oxygen water was recently proposed by Wire and Li (1996). This EAC initiation criterion was developed using transient analyses for the diffusion of sulfides plus experimental test results. The experiments were conducted mainly on compact tension-type specimens with initial crack depths of about 2.54mm. The present paper expands upon the work of Wire and Li by presenting results for significantly deeper initial semi-elliptical surface cracks. In addition, in one specimen, the surface crack penetrated weld-deposited cladding into the high-sulfur steel. The results for the semi-elliptical surface cracks agreed quite well with the EAC initiation criterion, and provide confirmation of the applicability of the criterion to crack configurations with more restricted access to water.
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The Initiation of Environmentally Assisted Cracking in Semi-Elliptical Surface Cracks
L. A. James
L. A. James
Bettis Atomic Power Laboratory, Westinghouse Electric Corporation, P.O. Box 79, West Mifflin, PA 15122-0079
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L. A. James
Bettis Atomic Power Laboratory, Westinghouse Electric Corporation, P.O. Box 79, West Mifflin, PA 15122-0079
J. Pressure Vessel Technol. May 1998, 120(2): 200-206 (7 pages)
Published Online: May 1, 1998
Article history
Received:
November 14, 1997
Revised:
December 5, 1997
Online:
February 11, 2008
Citation
James, L. A. (May 1, 1998). "The Initiation of Environmentally Assisted Cracking in Semi-Elliptical Surface Cracks." ASME. J. Pressure Vessel Technol. May 1998; 120(2): 200–206. https://doi.org/10.1115/1.2842241
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