Creep and fatigue properties of Incoloy 800H in a high-temperature gas-cooled reactor (HTGR) helium environment
A mechanical test program to assess the effects of a simulated HTGR helium environment on the fatigue and creep properties of Incoloy 800H and other primary-circuit metals is described. The emphasis and the objectives of this work are directed toward obtaining information to assess the integrity and safety of an HTGR throughout its service life. The helium test environment selected for study contained 40 ..mu.. atm H/sub 2/O, 200 ..mu.. atm H/sub 2/, 40 ..mu.. atm CO, 10 ..mu.. atm CO/sub 2/, and 20 ..mu.. atm CH/sub 4/. It is believed that this ''wet'' environment simulates that which could exist in a steam-cycle HTGR containing some leaking steam-generator tubes. A recirculating helium loop operating at about 4 psi in which impurities can be maintained at a constant level, has been constructed to supply the desired environment for fatigue and creep testing.
- Research Organization:
- Brookhaven National Lab., Upton, NY (USA)
- DOE Contract Number:
- EY-76-C-02-0016
- OSTI ID:
- 6472435
- Report Number(s):
- BNL-NUREG-25624; CONF-780310-3; TRN: 79-006724
- Resource Relation:
- Conference: International conference on alloy 800, Petten, Netherlands, 14 Mar 1978
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
HTGR TYPE REACTORS
REACTOR MATERIALS
INCOLOY 800
CREEP
FATIGUE
HELIUM
OXIDATION
PRIMARY COOLANT CIRCUITS
STEAM SYSTEMS
ALLOYS
CHEMICAL REACTIONS
CHROMIUM ALLOYS
COOLING SYSTEMS
CRYOGENIC FLUIDS
ELEMENTS
FLUIDS
GAS COOLED REACTORS
GRAPHITE MODERATED REACTORS
HEAT RESISTANT MATERIALS
HEAT RESISTING ALLOYS
INCOLOY ALLOYS
IRON ALLOYS
IRON BASE ALLOYS
MATERIALS
MECHANICAL PROPERTIES
NICKEL ALLOYS
NONMETALS
RARE GASES
REACTOR COMPONENTS
REACTOR COOLING SYSTEMS
REACTORS
210300* - Power Reactors
Nonbreeding
Graphite Moderated
360105 - Metals & Alloys- Corrosion & Erosion