ENVIRONMENT AND FRACTURE OF HIGH STRENGTH STEEL,
Abstract
The role of water and water vapor in promoting stable crack extension and delays failure in high-strength steel was investigated within the framework of fracture mechanics. The resistance method was utilized to steady the initiation and growth of cracks in center-notched pre-cracked sheet specimens of H-11 steel at 230,000 psi strength level. The stress field parameter Ki at crack initiation was controlled by the environment; the crack extension rate was controlled by the environment and the instantaneous value of the stress field parameter K. Stable crack extension was absent in a purified argon environment; with relative humidities less than approximately 60%, the crack extension rate was insensitive to temperature but increased with relative humidity and stress field parameter. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 20, 1963
- Accession Number
- AD0425981
Entities
People
- A. M. Willner
- H. H. Johnson
Organizations
- Cornell University