Mechanical properties of types 304 and 316 stainless steel after long-term aging and exposure

Conference · Sat Jan 01 04:00:00 EST 1983

OSTI ID:5435563

Horak, J A; Sikka, V K; Raske, D T

Because designs for Liquid Metal Fast Breeder Reactor (LMFBR) power plants include plant lifetimes to 40 years, an understanding of the mechanical behavior of the structural alloys used is required for times of approx. 2 to 2.5 x 10/sup 5/ h. Most of the alloys used for LMFBR out-of-core structures and components are in a metastable state at the beginning of plant lifetime and evolve to a more stable state and, therefore, microstructure during plant operation. We reviewed mechanical properties and microstructures after prolonged elevated-temperature exposure of types 304 and 316 stainless steel, two alloys used extensively in fast breeder systems. Aging alters properties; in particular, it decreases toughness and tensile ductility, but the properties are still adequate for service. Because stable microstructures have been reached in long-term exposures achieved so far, properties can be expected to remain adequate for service life exposures.

• Research Organization: Oak Ridge National Lab., TN (USA); Argonne National Lab., IL (USA)
• DOE Contract Number: W-7405-ENG-26
• OSTI ID: 5435563
• Report Number(s): CONF-8310198-3; ON: DE84003325
• Country of Publication: United States
• Language: English

Related Subjects

21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS
210500 -- Power Reactors
Breeding
36 MATERIALS SCIENCE
360103* -- Metals & Alloys-- Mechanical Properties
AGING
ALLOYS
BREEDER REACTORS
CHROMIUM ALLOYS
CHROMIUM STEELS
CHROMIUM-NICKEL STEELS
CORROSION RESISTANT ALLOYS
CREEP
CRYSTAL STRUCTURE
ELECTRON MICROSCOPY
EPITHERMAL REACTORS
FAILURES
FAST REACTORS
FBR TYPE REACTORS
FRACTURE PROPERTIES
HEAT RESISTANT MATERIALS
HEAT RESISTING ALLOYS
HIGH TEMPERATURE
IMPACT STRENGTH
IRON ALLOYS
IRON BASE ALLOYS
LIQUID METAL COOLED REACTORS
LMFBR TYPE REACTORS
MATERIALS
MECHANICAL PROPERTIES
MICROSCOPY
MICROSTRUCTURE
MOLYBDENUM ALLOYS
NICKEL ALLOYS
REACTOR MATERIALS
REACTORS
RUPTURES
STAINLESS STEEL-304
STAINLESS STEEL-316
STAINLESS STEELS
STEELS
TENSILE PROPERTIES