Fatigue crack propagation in austenitic stainless steels at cryogenic temperatures
This dissertation contains a study, in two parts, that relates to fatigue crack propagation in austenitic stainless steels at cryogenic temperatures. the first part of the research concentrates on the influence of the mechanically induced martensitic transformation on the fatigue crack growth rate in metastable austenitic stainless steels. The steels 304L and 304N were used to test the influence of composition, the testing temperatures 298 K and 77 K were used to study the influence of test temperature, and various load ratios were used to determine the influence of the mean stress. The second part of the research concerns the effect of low temperature on fatigue crack propagation in 310 austenitic stainless steel. Crack growth rates were measured at 298 K, 77 K, and 4 K. As temperature decreased the fatigue crack growth rate decreased while the threshold stress intensity increased. 106 refs., 29 figs., 4 tabs.
- Research Organization:
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- Sponsoring Organization:
- DOE/ER
- DOE Contract Number:
- AC03-76SF00098
- OSTI ID:
- 6950500
- Report Number(s):
- LBL-28489; ON: DE90011597
- Resource Relation:
- Other Information: Thesis (Ph.D.)
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
CRACK PROPAGATION
TEMPERATURE EFFECTS
STAINLESS STEEL-304L
DEFORMATION
FATIGUE
FRACTOGRAPHY
MARTENSITE
MECHANICAL PROPERTIES
MICROSTRUCTURE
TENSILE PROPERTIES
ULTRALOW TEMPERATURE
VERY LOW TEMPERATURE
ALLOYS
AUSTENITIC STEELS
CARBON ADDITIONS
CHROMIUM ALLOYS
CHROMIUM-NICKEL STEELS
CORROSION RESISTANT ALLOYS
CRYSTAL STRUCTURE
HEAT RESISTANT MATERIALS
HEAT RESISTING ALLOYS
HIGH ALLOY STEELS
IRON ALLOYS
IRON BASE ALLOYS
LOW CA
MATERIALS
NICKEL ALLOYS
STAINLESS STEELS
STEEL-CR19NI10-L
STEELS
360103* - Metals & Alloys- Mechanical Properties
360102 - Metals & Alloys- Structure & Phase Studies