Use of Ultimate Tensile Strength to Correlate and Estimate Creep and Creep-Rupture Behavior of Types 304 and 316 Stainless Steel
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Elevated-temperature tensile and creep properties of several heats of types 304 and 316 stainless steels were used to show that the short-term ultimate tensile strength of a given heat at the creep-test temperature and at a fixed strain rate can be used as an index for correlating and predicting creep and creep-rupture behavior. The short-term elevated-temperature ultimate tensile strength helps to account for changes in creep properties due to test temperature as well as due to heat-to-heat variations. Generalized models of time to rupture and minimum creep rate were defined in terms of stress, temperature and ultimate tensile strength. Ultimate tensile strength was used in a creep equation to predict the strain-time behavior of individual heats. Several possible reasons are presented for the observed relationships between the short-term ultimate tensile strength and the long-term creep properties. Design and materials engineering implications of the observed relationships between short-term elevated-temperature ultimate tensile strength and creep properties are also discussed.
- Research Organization:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC05-00OR22725; W-7405-ENG-26
- OSTI ID:
- 7087796
- Report Number(s):
- ORNL--5285
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
360103* -- Metals & Alloys-- Mechanical Properties
ALLOYS
CHROMIUM ALLOYS
CHROMIUM STEELS
CHROMIUM-NICKEL STEELS
CORROSION RESISTANT ALLOYS
CREEP
FAILURES
HEAT RESISTING ALLOYS
HIGH TEMPERATURE
IRON ALLOYS
IRON BASE ALLOYS
MECHANICAL PROPERTIES
MOLYBDENUM ALLOYS
NICKEL ALLOYS
REACTOR MATERIALS
RUPTURES
STAINLESS STEEL-304
STAINLESS STEEL-316
STAINLESS STEELS
STEELS
TEMPERATURE DEPENDENCE
TENSILE PROPERTIES