Orientation dependency of mechanical properties of 1950's vintage Type 304 stainless steel weldment components before and after low temperature neutron irradiation
Databases of mechanical properties for both the piping and reactor vessels at the Savannah River Site (SRS) were developed from weldment components (base, weld, and weld heat-affected-zone (HAZ)) of archival piping specimens in the unirradiated and irradiated conditions. Tensile, Charpy V-notch (CVN), and Compact Tension C(T) specimens were tested at 25 and 125C before and after irradiation at low temperatures (90 to 150C) to levels of 0.065 to 2.1 dpa. irradiation hardened the weldment components and reduced the absorbed energy and toughness properties from the unirradiated values. A marked difference in the Charpy V-notch absorbed energy and the elastic-plastic fracture toughness (J[sub IC]) was observed for both the base and HAZ components with the C-L orientation being lower in toughness than the L-C orientation in both the unirradiated and irradiated conditions. Fracture surface examination of the base and HAZ components of unirradiated C(T) specimens showed a channel'' morphology in the fracture surfaces of the C-L specimens, whereas equiaxed ductile rupture occurred in the L-C specimens. Chromium carbide precipitation in the HAZ component reduced the fracture toughness of the C-L and L-C specimens compared to the respective base component C-L and L-C specimens. Optical metallography of the piping materials showed stringers of second phase particles parallel to the rolling direction along with a banding or modulation in the microchemistry perpendicular to the pipe axis or rolling direction of the plate material.
- Research Organization:
- Westinghouse Savannah River Co., Aiken, SC (United States)
- Sponsoring Organization:
- DOE; USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC09-89SR18035
- OSTI ID:
- 6724906
- Report Number(s):
- WSRC-MS-92-138; CONF-9211117--5; ON: DE93005168
- Country of Publication:
- United States
- Language:
- English
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Mechanical properties of 1950`s vintage 304 stainless steel weldment components after low temperature neutron irradiation
Mechanical properties of 1950's vintage 304 stainless steel weldment components after low temperature neutron irradiation
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220600 -- Nuclear Reactor Technology-- Research
Test & Experimental Reactors
36 MATERIALS SCIENCE
360103 -- Metals & Alloys-- Mechanical Properties
360106* -- Metals & Alloys-- Radiation Effects
ALLOYS
AUSTENITIC STEELS
CHROMIUM ALLOYS
CHROMIUM-NICKEL STEELS
CONTAINERS
COOLING SYSTEMS
CORROSION RESISTANT ALLOYS
FRACTURE PROPERTIES
HEAT AFFECTED ZONE
HEAT RESISTANT MATERIALS
HEAT RESISTING ALLOYS
HIGH ALLOY STEELS
IRON ALLOYS
IRON BASE ALLOYS
JOINTS
MATERIALS
MECHANICAL PROPERTIES
METALLOGRAPHY
NATIONAL ORGANIZATIONS
NICKEL ALLOYS
ORIENTATION
PHYSICAL RADIATION EFFECTS
PIPES
PRIMARY COOLANT CIRCUITS
PRODUCTION REACTORS
RADIATION EFFECTS
REACTOR COMPONENTS
REACTOR COOLING SYSTEMS
REACTOR MATERIALS
REACTOR VESSELS
REACTORS
SAVANNAH RIVER PLANT
STAINLESS STEEL-304
STAINLESS STEELS
STEEL-CR19NI10
STEELS
TENSILE PROPERTIES
US AEC
US DOE
US ERDA
US ORGANIZATIONS
WELDED JOINTS
ZONES