Effect of Vacuum Environment on Mechanical Behavior.
Abstract
The effect of vacuum environment on the rate of crack propagation of aluminum 2014-T6 and 4130 steel was investigated under plane strain conditions. Compact tension specimens were used which were pin loaded. Center notched specimens of titanium (6Al-4V) were used for crack propagation and crack growth measurements under plane stress conditions in methanol-chloride environment. It is shown that that surface layer contributes to increased rate of crack propagation. A reduction in surface layer stress brought about by vacuum environment or by prestress and surface layer removal treatment decreases the rate of crack propagation. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 01, 1972
- Accession Number
- AD0743321
Entities
People
- Avinash Kumar
- Irvin R. Kramer
Organizations
- Martin Marietta