DESIGN DATA STUDY FOR COATED COLUMBIUM ALLOYS
Abstract
Progress is reported on preparations for the preliminary screening evaluation of 7 current Nb coatings applied to 30 mil Nb-5Zr alloy sheet. Sheet material for the preliminary evaluation was obtained, test parameters were established and specimens were submitted to various organizations for coating. The preliminary screening tests established will involve the determination of oxidation protective life and bend transition temperatures for each of the 7 coating-base metal systems in the as coated, as exposed (2000 and 2600 F) and prestrained (room temperature) and exposed (2000 and 2600 F) condition. Baseline data for the 30 mil Nb-5Zr alloy sheet were experimentally established. Brittle to ductile bend transition temperatures were determined for the uncoated sheet in the as received, stress relieved and heat treated conditions and after exposure in air at 2000 and 2600 F for various short time periods. Surface recession and internal penetration oxidation measurements were made on the uncoated sheet. A brief discussion is presented of the design data tests proposed and specialized equipment being constructed.
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 21, 1962
- Accession Number
- AD0273746
Entities
People
- J.d. Gadd