Consistent creep and rupture properties for creep-fatigue evaluation

Conference · Sun Jan 01 04:00:00 EST 1978

OSTI ID:6552155

Schultz, C. C.

The currently accepted practice of using inconsistent representations of creep and rupture behaviors in the prediction of creep-fatigue life is shown to introduce a factor of safety beyond that specified in current ASME Code design rules for 304 stainless steel Class 1 nuclear components. Accurate predictions of creep-fatigue life for uniaxial tests on a given heat of material are obtained by using creep and rupture properties for that same heat of material. The use of a consistent representation of creep and rupture properties for a mininum strength heat is also shown to provide adequate predictions. The viability of using consistent properties (either actual or those of a minimum heat) to predict creep-fatigue life thus identifies significant design uses for the results of characterization tests and improved creep and rupture correlations.

• Research Organization: Babcock and Wilcox Co., Alliance, OH (USA). Research and Development Div.
• Sponsoring Organization: USDOE
• DOE Contract Number: EY-76-C-15-0003
• OSTI ID: 6552155
• Report Number(s): CONF-781202--21
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360103* -- Metals & Alloys-- Mechanical Properties
AGING
ALLOYS
CHROMIUM ALLOYS
CHROMIUM STEELS
CHROMIUM-NICKEL STEELS
CORROSION RESISTANT ALLOYS
CREEP
FAILURES
FATIGUE
FORECASTING
HEAT RESISTANT MATERIALS
HEAT RESISTING ALLOYS
IRON ALLOYS
IRON BASE ALLOYS
LIFETIME
MATERIALS
MATERIALS TESTING
MECHANICAL PROPERTIES
NICKEL ALLOYS
RUPTURES
STAINLESS STEEL-304
STAINLESS STEELS
STANDARDS
STEELS
TESTING