Near-threshold corrosion fatigue crack propagation studies have been conducted using compact tension specimens of Mil S-24645 HSLA steel and a compatible weld metal in air, ASTM seawater at the free corrosion potential, and ASTM seawater with −0.8V and −1.0V (SCE) cathodic protection. Tests were conducted at 10 Hz and a stress ratio, R = 0.1. The weld metal exhibited slower crack growth rates and higher threshold stress intensity ranges in both air and ASTM seawater than the base metal. However, the weld metal itself exhibited similar behavior in air, ASTM seawater and under cathodic protection, giving a threshold stress intensity range of 10 to 12.7 ksi in1/2 (11 to 14 MPa m1/2). With the exception of the weld metal tested in air, after correction for crack closure, the effective threshold stress intensity range was reduced to the range 3.2 to 5.0 ksi in1/2 (3.5 to 5.5 MPa m1/2). Metal wedges, approximately 5 to 10 μm (1–2 grain sizes), which developed during the tests, were observed to contribute to crack closure in the −1.0V (SCE) cathodically protected specimens.
Skip Nav Destination
Article navigation
Research Papers
A Comparison of the Near-Threshold Corrosion Fatigue Crack Propagation Rates in Mil S-24645 HSLA Steel and Its Weld Metal
J. A. Todd,
J. A. Todd
Department of Metallurgical and Materials Engineering, Illinois Institute of Technology, Chicago, IL 60616
Search for other works by this author on:
L. Chen,
L. Chen
Department of Metallurgical and Materials Engineering, Illinois Institute of Technology, Chicago, IL 60616
Search for other works by this author on:
E. Y. Yankov,
E. Y. Yankov
Department of Metallurgical and Materials Engineering, Illinois Institute of Technology, Chicago, IL 60616
Search for other works by this author on:
H. Tao
H. Tao
Atlas Testing Laboratories, Inc., Los Angeles, CA 90040
Search for other works by this author on:
J. A. Todd
Department of Metallurgical and Materials Engineering, Illinois Institute of Technology, Chicago, IL 60616
L. Chen
Department of Metallurgical and Materials Engineering, Illinois Institute of Technology, Chicago, IL 60616
E. Y. Yankov
Department of Metallurgical and Materials Engineering, Illinois Institute of Technology, Chicago, IL 60616
H. Tao
Atlas Testing Laboratories, Inc., Los Angeles, CA 90040
J. Offshore Mech. Arct. Eng. May 1993, 115(2): 131-136 (6 pages)
Published Online: May 1, 1993
Article history
Received:
October 1, 1992
Online:
June 12, 2008
Citation
Todd, J. A., Chen, L., Yankov, E. Y., and Tao, H. (May 1, 1993). "A Comparison of the Near-Threshold Corrosion Fatigue Crack Propagation Rates in Mil S-24645 HSLA Steel and Its Weld Metal." ASME. J. Offshore Mech. Arct. Eng. May 1993; 115(2): 131–136. https://doi.org/10.1115/1.2920102
Download citation file:
Get Email Alerts
Cited By
Time-dependent wave motion in a running stream due to initial disturbances in Magnetohydrodynamics
J. Offshore Mech. Arct. Eng
The autonomous urban passenger ferry milliAmpere2: Design and testing
J. Offshore Mech. Arct. Eng
Numerical Analysis of the Effect of Tunnel Hydrofoil—Stern Flap on the Motion Stability of a Double M-Craft in Regular Waves
J. Offshore Mech. Arct. Eng (August 2025)
On the Performance of a Data-Driven Backward Compatible Physics-Informed Neural Network for Prediction of Flow Past a Cylinder
J. Offshore Mech. Arct. Eng (August 2025)
Related Articles
Near-Threshold Fatigue Crack Growth Behavior of Mil S-24645 HSLA Steel and Its Weldments
J. Offshore Mech. Arct. Eng (August,1993)
Corrosion Fatigue Crack-Growth Behavior of HY-130 Steel and Weldments
J. Pressure Vessel Technol (November,1981)
Crack Closure Effects on Fatigue Crack Growth Thresholds and Remaining Life in an HSLA Steel
J. Pressure Vessel Technol (February,1997)
Corrosion Fatigue Crack Growth in Clad Low-Alloy Steels—Part I: Medium-Sulfur Forging Steel
J. Pressure Vessel Technol (August,1997)
Related Proceedings Papers
Related Chapters
Introductory Information
The Stress Analysis of Cracks Handbook, Third Edition
The Necessary Fine-Tuning of Process Management and Controls for Metallic Transformations during Manufacturing of Bearings: Application to M50NiL Steel
Bearing and Transmission Steels Technology
Repair Methods for Loadbearing Steel Structures Operating on the Norwegian Continental Shelf
Ageing and Life Extension of Offshore Facilities