IMPROVEMENT OF THE HIGH-TEMPERATURE STRENGTH PROPERTIES OF REACTOR MATERIALS AFTER FABRICATION

Technical Report · Mon Jun 15 04:00:00 EDT 1959

DOI:https://doi.org/10.2172/4252135· OSTI ID:4252135

Swindeman, R W; Douglas, D A

Possibilities are reviewed for improving the hightemperature strength properties of three nickel-basc alloys after fabrication of sheet material. Creep and tensile data are presentcd for Inconel. Hastelloy B, and INOR-8. Depending on the material and service conditions, improvements in strength can be brought about by treatments such as annealing or aging, carburization, and environmental control during service. Data showing the relative strengthening by each of these means are presented. Carburization produces the greatest increase in creep strength. Although the improvements are not as pronounced as in the case of carburization, nitriding and oxidizing environments also can increase the creep life over the life in argon. Optimum annealing or aging treatments, however, are dependent on the anticipated service temperature and stress. (auth)

• Research Organization: Oak Ridge National Lab., Tenn.
• DOE Contract Number: W-7405-ENG-26
• NSA Number: NSA-13-014525
• OSTI ID: 4252135
• Report Number(s): ORNL-2687
• Country of Publication: United States
• Language: English

Related Subjects

ALUMINUM ALLOYS
ARGON
CARBIDES
CHROMIUM ALLOYS
CONTROL
CREEP
ENVIRONMENT
HASTELLOY
HEAT TREATMENTS
HIGH TEMPERATURE
INCONEL ALLOYS
INOR-8
METALLURGY AND CERAMICS
MOLYBDENUM ALLOYS
NICKEL ALLOYS
NIOBIUM ALLOYS
NITRIDES
OXIDES
SHEETS
STRESSES
TEMPERATURE
TENSILE PROPERTIES
TITANIUM ALLOYS
USES