Hydrogen-induced cleavage fracture of type 304L austenitic stainless steel
Type 304L stainless steel supersaturated with hydrogen gas fails in tension at 200 to 250/sup 0/K by brittle fracture. Fracture surfaces exhibit isolated facets oriented 0 to 30/sup 0/ to the tensile axis and have characteristics of cleavage fracture. The threefold symmetry of Laue back reflection photographs and trace analysis of deformation bands on the facets demonstrate that cleavage is along (111) planes. The fracture paths were identified as coherent twin boundaries on polished sections through facets and on microcracks across interior grains. Although cleavage fracture is not commonly observed in alloys with a face-centered cubic (FCC) lattice, these observations for Type 304L stainless steel and similar observations on Nitronic-40 and Tenelon demonstrate that cleavage is possible under some circumstances in austenitic steels.
- Research Organization:
- Du Pont de Nemours (E.I.) and Co., Aiken, SC (USA). Savannah River Lab.
- DOE Contract Number:
- EY-76-C-09-0001
- OSTI ID:
- 5800251
- Report Number(s):
- DP-MS-79-24; CONF-791115-1; TRN: 79-021458
- Resource Relation:
- Conference: Symposium on fractography and materials science, Williamsburg, VA, USA, 27 Nov 1979
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
STAINLESS STEEL-304L
FRACTURE PROPERTIES
TENELON
AUSTENITE
CHEMICAL COMPOSITION
CLEAVAGE
CRACKS
DEFORMATION
DUCTILITY
FATIGUE
FRACTURES
HYDROGEN
INTERFACES
LOW TEMPERATURE
MARTENSITE
METALLURGICAL EFFECTS
STRESS CORROSION
SURFACES
ALLOYS
CARBON ADDITIONS
CHEMICAL REACTIONS
CHROMIUM ALLOYS
CHROMIUM STEELS
CHROMIUM-NICKEL STEELS
CORROSION
CORROSION RESISTANT ALLOYS
CRYOGENIC FLUIDS
CRYSTAL STRUCTURE
ELEMENTS
FAILURES
FLUIDS
HEAT RESISTANT MATERIALS
HEAT RESISTING ALLOYS
IRON ALLOYS
IRON BASE ALLOYS
MANGANESE ALLOYS
MATERIALS
MECHANICAL PROPERTIES
MICROSTRUCTURE
NICKEL ALLOYS
NONMETALS
STAINLESS STEELS
STEELS
TENSILE PROPERTIES
360103* - Metals & Alloys- Mechanical Properties