Notch and hydrogen effects on sensitized 21-6-9 stainless steel
Conference
·
OSTI ID:5925994
Type 21-6-9 stainless steel alloy is slightly notch sensitive in the solution annealed condition, a behavior that is aggravated by sensitization anneal at 920/sup 0/K. The lower toughness of the sensitized alloy is a measure of microstructural embrittlement associated with carbide precipitation in grain boundaries. The tendency toward grain boundary fracture in the sensitized alloy is accentuated by stress concentration at the notch. Also, there is an increase in notch sensitivity when the alloy is tested in a high pressure (69 MPa) hydrogen environment, due to susceptibility of the grain boundaries to hydrogen embrittlement.
- Research Organization:
- Du Pont de Nemours (E.I.) and Co., Aiken, SC (USA). Savannah River Lab.
- DOE Contract Number:
- EY-76-C-09-0001
- OSTI ID:
- 5925994
- Report Number(s):
- DP-MS-79-22; CONF-790910-5
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
360102 -- Metals & Alloys-- Structure & Phase Studies
360103* -- Metals & Alloys-- Mechanical Properties
ALLOYS
ANNEALING
CARBIDES
CARBON COMPOUNDS
CHROMIUM ALLOYS
CORROSION RESISTANT ALLOYS
CRYOGENIC FLUIDS
CRYSTAL STRUCTURE
ELEMENTS
EMBRITTLEMENT
FAILURES
FLUIDS
FRACTURE PROPERTIES
FRACTURES
GRAIN BOUNDARIES
HEAT TREATMENTS
HIGH PRESSURE
HYDROGEN
IRON ALLOYS
IRON BASE ALLOYS
MANGANESE ALLOYS
MECHANICAL PROPERTIES
METALLURGICAL EFFECTS
MICROSTRUCTURE
NICKEL ALLOYS
NONMETALS
NOTCHES
PRECIPITATION
SENSITIVITY
SEPARATION PROCESSES
STAINLESS STEEL-21-6-9
STAINLESS STEELS
STEELS
TESTING
360102 -- Metals & Alloys-- Structure & Phase Studies
360103* -- Metals & Alloys-- Mechanical Properties
ALLOYS
ANNEALING
CARBIDES
CARBON COMPOUNDS
CHROMIUM ALLOYS
CORROSION RESISTANT ALLOYS
CRYOGENIC FLUIDS
CRYSTAL STRUCTURE
ELEMENTS
EMBRITTLEMENT
FAILURES
FLUIDS
FRACTURE PROPERTIES
FRACTURES
GRAIN BOUNDARIES
HEAT TREATMENTS
HIGH PRESSURE
HYDROGEN
IRON ALLOYS
IRON BASE ALLOYS
MANGANESE ALLOYS
MECHANICAL PROPERTIES
METALLURGICAL EFFECTS
MICROSTRUCTURE
NICKEL ALLOYS
NONMETALS
NOTCHES
PRECIPITATION
SENSITIVITY
SEPARATION PROCESSES
STAINLESS STEEL-21-6-9
STAINLESS STEELS
STEELS
TESTING