Effect of temperature and pressure on hydrogen cracking in high strength type 4340 steel
The effect of temperature and pressure on the environment induced static load cracking performance of 180 ksi (1240 MPa) yield strength AISI type 4340 steel exposed to dry hydrogen and hydrogen sulfide gas was evaluated. K/sub Iscc/ and static load crack growth rate data were developed with 1 in. (2.54 cm) thick compact toughness specimens and the results expressed in terms of fracture mechanics paramters. Results show that temperature and pressure have a significant effect on cracking performance measured in dry hydrogen gas. Temperature was found to affect the K/sub Iscc/ measured in in H/sub 2/S gas but neither temperature or pressure had a significant effect on the corresponding crack growth rate. The results of this investigation are consistent with the critical hydrogen concentration concept of stress corrosion cracking.
- Research Organization:
- Westinghouse Research and Development Center, Pittsburgh, PA
- OSTI ID:
- 6199521
- Journal Information:
- J. Mater. Energy Syst.; (United States), Journal Name: J. Mater. Energy Syst.; (United States) Vol. 1:1; ISSN JMSMD
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
220200 -- Nuclear Reactor Technology-- Components & Accessories
36 MATERIALS SCIENCE
360105* -- Metals & Alloys-- Corrosion & Erosion
ALLOYS
CHALCOGENIDES
CHEMICAL COMPOSITION
CHEMICAL REACTIONS
CHROMIUM ALLOYS
CORROSION
CORROSION RESISTANT ALLOYS
CORROSIVE EFFECTS
CRACKS
CRYOGENIC FLUIDS
ELEMENTS
FLUIDS
FRACTURE PROPERTIES
HYDROGEN
HYDROGEN COMPOUNDS
HYDROGEN SULFIDES
IRON ALLOYS
IRON BASE ALLOYS
MECHANICAL PROPERTIES
NICKEL ALLOYS
NICKEL STEELS
NONMETALS
PRESSURE DEPENDENCE
STAINLESS STEELS
STEELS
STRESS CORROSION
SULFIDES
SULFUR COMPOUNDS
TEMPERATURE DEPENDENCE