Heat-treatment parameters for the aging of Alloy 625
Technical Report
·
OSTI ID:6346936
An investigation was undertaken to determine a set of heat-treatment parameters for the aging of Alloy 625 to a minimum yield strength of 100 ksi. The Box-Hunter technique of response surface analysis was employed to determine the relationship of the yield strength to the five heat-treatment parameters: the anneal/solution-treatment temperature, the nucleation-treatment temperature and time, and the final aging temperature and time. It was found that Alloy 625 that has a high niobium/carbon ratio and has been hot-finished to retain massive precipitated carbides can be aged to a minimum yield strength of 100 ksi in as little as 20 hr at 1200/sup 0/F. The tensile properties of aged material were measured at temperatures to 700/sup 0/F, and the thermal stability was confirmed by exposure for 10,000 hr in 600/sup 0/F air with no change in room temperature tensile properties.
- Research Organization:
- Knolls Atomic Power Lab., Schenectady, NY (USA)
- DOE Contract Number:
- AC12-76SN00052
- OSTI ID:
- 6346936
- Report Number(s):
- KAPL-4143; ON: DE81030005
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
360101* -- Metals & Alloys-- Preparation & Fabrication
AGING
ALLOYS
CHROMIUM ALLOYS
HEAT TREATMENTS
INCONEL 625
INCONEL ALLOYS
IRON ALLOYS
MECHANICAL PROPERTIES
MOLYBDENUM ALLOYS
NICKEL ALLOYS
NICKEL BASE ALLOYS
NIOBIUM ALLOYS
TANTALUM ALLOYS
TENSILE PROPERTIES
YIELD STRENGTH
360101* -- Metals & Alloys-- Preparation & Fabrication
AGING
ALLOYS
CHROMIUM ALLOYS
HEAT TREATMENTS
INCONEL 625
INCONEL ALLOYS
IRON ALLOYS
MECHANICAL PROPERTIES
MOLYBDENUM ALLOYS
NICKEL ALLOYS
NICKEL BASE ALLOYS
NIOBIUM ALLOYS
TANTALUM ALLOYS
TENSILE PROPERTIES
YIELD STRENGTH