Contamination hardening of SU-31 and FS-85 columbium alloys
Technical Report
·
OSTI ID:4335154
A study was made of the contamination hardening of SU-31 and FS-85 Nb alloys which results when samples are exposed in air temperatures of 1400 to 2600 deg F. Diffusion coefficients for the principal contaminant, calculated from hardening profiles, are in good agreement with data previously reported for diffusion of oxygen in pure Nb. It is concluded that the hardening in the alloys is principally due to the absorption and diffusion of oxygen from the air. Activation energies were 22.5 kcal/mol for SU-31 and 20.3 kcal,/mol for FS-85. Based on the measurements of this study, SU-31 has a higher resistance to contamination hardening than FS-85 by about a factor of two. (auth)
- Research Organization:
- Army Materials and Mechanics Research Center, Watertown, Mass. (USA)
- NSA Number:
- NSA-29-024643
- OSTI ID:
- 4335154
- Report Number(s):
- AD--766679-5; AMMRC-TR--73-18
- Country of Publication:
- United States
- Language:
- English
Similar Records
Oxidation of columbium and coated columbium alloys
DESIGN DATA STUDY FOR COATED COLUMBIUM ALLOYS. Bimonthly Technical Progress Report No. 5, August 21, 1962 through October 21, 1962
Kinetics and Mechanism of Columbium Alloy Corrosion In Superheated Steam
Technical Report
·
Sun Jul 01 00:00:00 EDT 1973
·
OSTI ID:4306354
DESIGN DATA STUDY FOR COATED COLUMBIUM ALLOYS. Bimonthly Technical Progress Report No. 5, August 21, 1962 through October 21, 1962
Technical Report
·
Tue Nov 20 23:00:00 EST 1962
·
OSTI ID:4652367
Kinetics and Mechanism of Columbium Alloy Corrosion In Superheated Steam
Journal Article
·
Sun Mar 31 23:00:00 EST 1963
· Corrosion (Houston)
·
OSTI ID:4730505