Overload effect and fatigue crack propagation in amorphous metallic alloys
Journal Article
·
· Scr. Metall.; (United States)
Fatigue crack propagation in amorphous metals has an overload effect which usually increases with the number of overload cycles. The variation of overload effect with delta K is explained by the size of the plastic zone which depends on delta K. A comparison of the spacing between striations and da/dN shows that the crack jumps a step about every hundred cycles. The featureless region is probably due to shear fracture along a shear band during overload. Both crack tip blunting and branching occur during the application of overload. Work hardening is not a necessary factor for the overloading effect.
- Research Organization:
- Department of Mechanical Engineering, University of Rochester, Rochester, NY
- OSTI ID:
- 6468067
- Journal Information:
- Scr. Metall.; (United States), Journal Name: Scr. Metall.; (United States) Vol. 18:7; ISSN SCRMB
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
360103* -- Metals & Alloys-- Mechanical Properties
ALLOYS
AMORPHOUS STATE
CRACK PROPAGATION
DYNAMIC LOADS
ELASTICITY
FATIGUE
MATERIALS TESTING
MECHANICAL PROPERTIES
MECHANICAL TESTS
METALLURGY
PHYSICAL METALLURGY
PLASTICITY
SHEAR
STRESS ANALYSIS
TENSILE PROPERTIES
TESTING
YIELD STRENGTH
360103* -- Metals & Alloys-- Mechanical Properties
ALLOYS
AMORPHOUS STATE
CRACK PROPAGATION
DYNAMIC LOADS
ELASTICITY
FATIGUE
MATERIALS TESTING
MECHANICAL PROPERTIES
MECHANICAL TESTS
METALLURGY
PHYSICAL METALLURGY
PLASTICITY
SHEAR
STRESS ANALYSIS
TENSILE PROPERTIES
TESTING
YIELD STRENGTH