Evaporation behavior of Hastelloy-X alloys in simulated very high temperature reactor environments
A sequential analysis was made on the material degradations during exposure of nickel-base corrosionresistant austenitic alloys to simulated very high temperature reactor environments. The materials tested were two modified versions of Hastelloy-X in terms of both increased manganese content for improved compatibility and decreased manganese content for possible adverse effects. Quantitative analysis of the specimens after exposure for 1000 h at several temperature steps from 850 to 1050/sup 0/C have revealed the temperature-dependent aspects of the processes including the depletion of chromium and manganese due to oxidation, evaporation, and carbon transfer into and/or from the materials. The material with enriched manganese, developed and specified as Hastelloy-XR, showed enhanced resistance to loss of chromium in terms of both oxidation and evaporation.
- Research Organization:
- Japan Atomic Energy Research Institute Tokai-mura, Naka-gun, Ibaraki-ken
- OSTI ID:
- 6476649
- Journal Information:
- Nucl. Technol.; (United States), Vol. 66:2
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
HASTELLOY X
CARBURIZATION
EVAPORATION
OXIDATION
HASTELLOY XR
REACTOR MATERIALS
VHTR REACTOR
CARBON
CHROMIUM
COMPATIBILITY
CORROSION RESISTANCE
CORROSION RESISTANT ALLOYS
MANGANESE
MATERIALS TESTING
METALLURGICAL EFFECTS
NICKEL BASE ALLOYS
TEMPERATURE DEPENDENCE
VERY HIGH TEMPERATURE
ALLOYS
CARBON ADDITIONS
CHEMICAL REACTIONS
CHROMIUM ALLOYS
COBALT ALLOYS
ELEMENTS
ENRICHED URANIUM REACTORS
EXPERIMENTAL REACTORS
GAS COOLED REACTORS
GRAPHITE MODERATED REACTORS
HARDENING
HASTELLOYS
HEAT RESISTANT MATERIALS
HEAT RESISTING ALLOYS
HELIUM COOLED REACTORS
HTGR TYPE REACTORS
IRON ALLOYS
MANGANESE ADDITIONS
MANGANESE ALLOYS
MATERIALS
METALS
MOLYBDENUM ALLOYS
NICKEL ALLOYS
NONMETALS
PHASE TRANSFORMATIONS
POWER REACTORS
REACTORS
RESEARCH AND TEST REACTORS
SILICON ADDITIONS
SILICON ALLOYS
SURFACE HARDENING
SURFACE TREATMENTS
TESTING
THERMAL REACTORS
TRANSITION ELEMENTS
TUNGSTEN ALLOYS
210300* - Power Reactors
Nonbreeding
Graphite Moderated
360105 - Metals & Alloys- Corrosion & Erosion