Corrosion Fatigue Behavior of 4340 Steel Above K sub I scc
Abstract
The purpose of the program was to study the corrosion fatigue behavior of AISI 4340 in distilled water above K sub Iscc. The results obtained by superimposing fatigue crack growth behavior determined in an inert argon atmosphere onto the environmental contribution determined from sustained load stress corrosion tests indicated that a modification of the Wei-Landes model was required to improve the predictability of the corrosion fatigue behavior. This indicated that the stress corrosion contribution to corrosion fatigue is a complex function of K sub I, particularly at load cycles which are close to K sub Iscc. Activation energies for crack growth in stress corrosion and corrosion fatigue indicate that the kinetics are controlled by the metal-environment reaction occurring at the crack surface.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 01, 1972
- Accession Number
- AD0747700
Entities
People
- C. S. Kortovich
- E. A. Steigerwald