Effect of aging and cold working on the high-temperature low-cycle fatigue behavior of alloy 800H. Part I. The effect of hardening processes on the initial stress--strain curve
Journal Article
·
· Metall. Trans., A; (United States)
- General Atomic Co., San Diego, CA
The individual and combined effects of cold working (5 and 10%) and aging (4000 and 8000 h at 538 to 760/sup 0/C) on the microstructure and high-temperature yield strength of alloy 800H have been investigated. The specimens were tested at the aging temperatures. During testing some of the specimens showed the phenomenon of serrated yielding. In order of importance, the principal hardening agents observed in this work were: cold work, the precipitation of Cr/sub 23/C/sub 6/ at the grain boundaries, and, in some cases, the precipitation of a Perovskite-type ..gamma..' phase in the grain interiors.
- OSTI ID:
- 6466179
- Journal Information:
- Metall. Trans., A; (United States), Journal Name: Metall. Trans., A; (United States) Vol. 9:7; ISSN MTTAB
- Country of Publication:
- United States
- Language:
- English
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36 MATERIALS SCIENCE
360102 -- Metals & Alloys-- Structure & Phase Studies
360103* -- Metals & Alloys-- Mechanical Properties
AGING
ALLOYS
ANNEALING
CARBIDES
CARBON COMPOUNDS
CHROMIUM ALLOYS
CHROMIUM CARBIDES
CHROMIUM COMPOUNDS
COLD WORKING
CRYSTAL STRUCTURE
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FATIGUE
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GRAPHITE MODERATED REACTORS
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HTGR TYPE REACTORS
INCOLOY 800
INCOLOY ALLOYS
IRON ALLOYS
IRON BASE ALLOYS
MATERIALS
MATERIALS WORKING
MECHANICAL PROPERTIES
METALLURGICAL EFFECTS
MICROSTRUCTURE
MINERALS
NICKEL ALLOYS
PEROVSKITES
PRECIPITATION
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210300 -- Power Reactors
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36 MATERIALS SCIENCE
360102 -- Metals & Alloys-- Structure & Phase Studies
360103* -- Metals & Alloys-- Mechanical Properties
AGING
ALLOYS
ANNEALING
CARBIDES
CARBON COMPOUNDS
CHROMIUM ALLOYS
CHROMIUM CARBIDES
CHROMIUM COMPOUNDS
COLD WORKING
CRYSTAL STRUCTURE
FABRICATION
FATIGUE
GAS COOLED REACTORS
GRAIN BOUNDARIES
GRAPHITE MODERATED REACTORS
HEAT RESISTANT MATERIALS
HEAT RESISTING ALLOYS
HEAT TREATMENTS
HTGR TYPE REACTORS
INCOLOY 800
INCOLOY ALLOYS
IRON ALLOYS
IRON BASE ALLOYS
MATERIALS
MATERIALS WORKING
MECHANICAL PROPERTIES
METALLURGICAL EFFECTS
MICROSTRUCTURE
MINERALS
NICKEL ALLOYS
PEROVSKITES
PRECIPITATION
REACTOR COMPONENTS
REACTORS
SEPARATION PROCESSES
TRANSITION ELEMENT COMPOUNDS
YIELD STRENGTH