Low-Cycle Fatigue of Experimental HY-130/150 and HY-180/210 Steels and Weldments
Abstract
Because submarine hulls are cyclically loaded at high stresses, the fatigue behavior of experimental submarine-hull steels is important in evaluating their structural suitability. Therefore, the Applied Research Laboratory determined the low-cycle high-strain fatigue properties of the 5Ni-Cr-Mo-V experimental HY-130/150 steel, the 12Ni-5Cr-3Mo experimental HY-180/210 steel, and HY-80 steel, the current submarine-hull steel. In addition, the fatigue behavior of weldments of the 5Ni-Cr-Mo-V and HY-80 steels was determined, and the fatigue data for the unwelded specimens were analyzed. The results showed that in the cycle-life range of primary interest, the fatigue strength (strain range to cause failure) of the 5Ni-Cr-Mo-V and 12 Ni-5Cr-3Mo steels was significantly higher than that of HY-80 steel. However, to insure a corresponding resistance to failure by fatigue, the fatigue strength of submarine-hull materials should be proportional to the yield strength of the material.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 01, 1964
- Accession Number
- AD0456328
Entities
People
- E. J. Jr Imhof
- R. P. Haak
- S. T. Rolfe
Organizations
- U.S. Steel