Elevated temperature ductility of types 304 and 316 stainless steel. [640/sup 0/ to 750/sup 0/C]
Conference
·
OSTI ID:6490456
Austenitic stainless steel types 304 and 316 are known for their high ductility and toughness. However, the present study shows that certain combinations of strain rate and test temperature can result in a significant loss in elevated-temperature ductility. Such a phenomenon is referred to as ductility minimum. The strain rate, below which ductility loss is initiated, decreases with decrease in test temperature. Besides strain rate and temperature, the ductility minimum was also affected by nitrogen content and thermal aging conditions. Thermal aging at 649/sup 0/C was observed to eliminate the ductility minimum at 649/sup 0/C in both types 304 and 316 stainless steel. Such an aging treatment resulted in a higher ductility than the unaged value. Aging at 593/sup 0/C still resulted in some loss in ductility. Current results suggest that ductility-minimum conditions for stainless steel should be considered in design, thermal aging data analysis, and while studying the effects of chemical composition.
- Research Organization:
- Oak Ridge National Lab., TN (USA)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- W-7405-ENG-26
- OSTI ID:
- 6490456
- Report Number(s):
- CONF-781202--38
- Country of Publication:
- United States
- Language:
- English
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Journal Article
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·
OSTI ID:7215112
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·
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·
Thu May 11 00:00:00 EDT 1978
·
OSTI ID:6551330
Related Subjects
36 MATERIALS SCIENCE
360103* -- Metals & Alloys-- Mechanical Properties
AGING
ALLOYS
CHEMICAL COMPOSITION
CHROMIUM ALLOYS
CHROMIUM STEELS
CHROMIUM-NICKEL STEELS
CORROSION RESISTANT ALLOYS
CREEP
CRYOGENIC FLUIDS
CRYSTAL STRUCTURE
DUCTILITY
ELEMENTS
ELONGATION
FLUIDS
FRACTURE PROPERTIES
GRAIN SIZE
HEAT RESISTANT MATERIALS
HEAT RESISTING ALLOYS
HIGH TEMPERATURE
IRON ALLOYS
IRON BASE ALLOYS
MATERIALS
MECHANICAL PROPERTIES
METALLURGICAL EFFECTS
MICROSTRUCTURE
MOLYBDENUM ALLOYS
NICKEL ALLOYS
NITROGEN
NONMETALS
SIZE
STAINLESS STEEL-304
STAINLESS STEEL-316
STAINLESS STEELS
STEELS
TEMPERATURE DEPENDENCE
TENSILE PROPERTIES
360103* -- Metals & Alloys-- Mechanical Properties
AGING
ALLOYS
CHEMICAL COMPOSITION
CHROMIUM ALLOYS
CHROMIUM STEELS
CHROMIUM-NICKEL STEELS
CORROSION RESISTANT ALLOYS
CREEP
CRYOGENIC FLUIDS
CRYSTAL STRUCTURE
DUCTILITY
ELEMENTS
ELONGATION
FLUIDS
FRACTURE PROPERTIES
GRAIN SIZE
HEAT RESISTANT MATERIALS
HEAT RESISTING ALLOYS
HIGH TEMPERATURE
IRON ALLOYS
IRON BASE ALLOYS
MATERIALS
MECHANICAL PROPERTIES
METALLURGICAL EFFECTS
MICROSTRUCTURE
MOLYBDENUM ALLOYS
NICKEL ALLOYS
NITROGEN
NONMETALS
SIZE
STAINLESS STEEL-304
STAINLESS STEEL-316
STAINLESS STEELS
STEELS
TEMPERATURE DEPENDENCE
TENSILE PROPERTIES