Assessment of an improved multiaxial strength theory based on creep-rupture data for type 316 stainless steel
- Oak Ridge National Lab., TN (United States)
A new multiaxial strength theory incorporating three independent stress parameters was developed and reported by the author in 1984. It was formally incorporated into ASME Code Case N47-29 in 1990. In the earlier paper, the new model was shown to provide significantly more accurate stress-rupture life predictions than the classical theories of von Mises, Tresca, and Rankine, for type 304 stainless steel tested at 593 C under different biaxial stress states. Further assessments for other alloys are showing similar results. The current paper provides additional results for type 316 stainless steel specimens tested at 600 C under tension-tension and tension-compression stress states and shows 2-3 orders of magnitude reduction in the scatter in predicted versus observed lives. A key feature of the new theory, which incorporates the maximum deviatoric stress, the first invariant of the stress tensor, and the second invariant of the deviatoric stress tensor, is its ability to distinguish between life under tensile versus compressive stress states.
- DOE Contract Number:
- AC05-84OR21400
- OSTI ID:
- 6490909
- Journal Information:
- Journal of Pressure Vessel Technology; (United States), Vol. 115:2; ISSN 0094-9930
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
STAINLESS STEEL-316
CREEP
MATHEMATICAL MODELS
RUPTURES
EXPERIMENTAL DATA
STRESSES
TEMPERATURE RANGE 0400-1000 K
TENSILE PROPERTIES
ALLOYS
AUSTENITIC STEELS
CHROMIUM ALLOYS
CHROMIUM-NICKEL STEELS
CHROMIUM-NICKEL-MOLYBDENUM STEELS
CORROSION RESISTANT ALLOYS
DATA
FAILURES
HEAT RESIS
HIGH ALLOY STEELS
INFORMATION
IRON ALLOYS
IRON BASE ALLOYS
MECHANICAL PROPERTIES
MOLYBDENUM ALLOYS
NICKEL ALLOYS
NUMERICAL DATA
STAINLESS STEELS
STEEL-CR17NI12MO3
STEELS
TEMPERATURE RANGE
360103* - Metals & Alloys- Mechanical Properties