TEM observations of crack tip: cavity interactions

Conference · Thu Jan 01 00:00:00 EST 1981

OSTI ID:6304091

Horton, J A; Ohr, S M; Jesser, W A

Crack tip-cavity interactions have been studied by performing room temperature deformation experiments in a transmission electron microscope on ion-irradiated type 316 stainless steel with small helium containing cavities. Slip dislocations emitted from a crack tip cut, sheared, and thereby elongated cavities without a volume enlargement. As the crack tip approached, a cavity volume enlargement occurred. Instead of the cavities continuing to enlarge until they touch, the walls between the cavities fractured. Fracture surface dimples do not correlate in size or density with these enlarged cavities.

• Research Organization: Oak Ridge National Lab., TN (USA); Virginia Univ., Charlottesville (USA)
• DOE Contract Number: W-7405-ENG-26
• OSTI ID: 6304091
• Report Number(s): CONF-810831-13; ON: DE81028574; TRN: 81-015198
• Resource Relation: Conference: Fusion reactor materials meeting, Seattle, WA, USA, 9 Aug 1981
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
STAINLESS STEEL-316
FRACTURES
CRACKS
DEFORMATION
ELECTRON MICROSCOPY
HELIUM
IRRADIATION
ALLOYS
CHROMIUM ALLOYS
CHROMIUM STEELS
CHROMIUM-NICKEL STEELS
CORROSION RESISTANT ALLOYS
ELEMENTS
FAILURES
FLUIDS
GASES
HEAT RESISTANT MATERIALS
HEAT RESISTING ALLOYS
IRON ALLOYS
IRON BASE ALLOYS
MATERIALS
MICROSCOPY
MOLYBDENUM ALLOYS
NICKEL ALLOYS
NONMETALS
RARE GASES
STAINLESS STEELS
STEELS
360103* - Metals & Alloys- Mechanical Properties
700209 - Fusion Power Plant Technology- Component Development & Materials Testing