CORROSION-FATIGUE CRACK PROPAGATION STUDIES OF SOME NEW HIGH-STRENGTH STRUCTURAL STEELS.
Abstract
Fatigue crack propagation studies were conducted on three new high-strength structural steels: 9Ni-4Co-0.20C, quenched and tempered; 10Ni-2Cr-1Mo-8Co, dual strengthened; and 13Cr-8Ni-2Mo, precipitation-hardened stainless. The yield strengths of these steels ranged from 176 to 193 ksi. Notched cantilever-bend specimens of each steel were cycled zero-to-tension in two environments - room air and 3.5% NaCl salt water. Fatigue crack growth rates were measured experimentally and correlated with the crack tip stress-intensity factor range. The results indicate that these new steels possess greater resistance to fatigue crack propagation and less sensitivity to environment than previously studied steels of comparable strength. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 03, 1969
- Accession Number
- AD0687077
Entities
People
- E. A. Lance
- T. W. Crocker
Organizations
- United States Naval Research Laboratory