Research on the Basic Nature of Stress Corrosion for Various Structural Alloys at Room and Elevated Temperature
Abstract
The relationship between quantity of ASTM sea salt, varying from 0.0002 to 0.02 g/sq in., and thickness of anodized film--0, 2, and 8 microinches--in elevated temperature stress-corrosion cracking of the titanium alloys Ti-6A1-4V and B120VCA was investigated. Exposure conditions were 800 degree F-25,000 psi- 190 hr for the former alloy and 600 degrees F-100,000 p i-190 hr for the latter. Damage was progressively greater with increasing quantity of salt. The anodized films appeared to be of benefit only to the B-120VCA. The alloys: 2024-T86, 7075- T6, ZK-60A-T5, 17-7 PH RH950, and B-120VCA in two conditions of grain size and two conditions of surface treatment were tested as follows: tensile test in air at room temperature, and in distilled water an ASTM sea water at 32 degrees, 75 degrees, and 212 degrees F; and statically leaded at 90% of the yield strength in media of air, water, and ASTM sea water at room temperature.
Document Details
- Document Type
- Technical Report
- Publication Date
- May 01, 1962
- Accession Number
- AD0281712