Journal article
Ductile Fracture in Metalworking
Pergamon Press, Encyclopedia of Materials Science and Engineering. Vol. 2, (Met. A. , 8609-72-0335) 1240-1243, 1986
01 Jan 1986
Abstract
Fracture in ductile metals is initiated by the development of voids at a number of sites where compatibility of deformation is difficult, such as grain boundary triple points, inclusions and second-phase particles (Rogers 1960). The growth and coalescence of these voids leads to the formation of a crack which propagates to cause fracture. In a tensile specimen, substantial void growth and coalescence occurs only at the neck, which normally forms after uniform elongations of approximately 30%. Not only does the strain concentrate in this region but the state of stress becomes one of increasing triaxial tension as the neck develops. This leads to a central internal crack along the axis of the specimen at the plane of minimum cross section where the triaxial stress is greatest. Further deformation causes this crack to propagate outward, resulting in a conventional cup-cone failure. 4 ref.--AA
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Details
- Title
- Ductile Fracture in Metalworking
- Creators
- H Rogers
- Publication Details
- Pergamon Press, Encyclopedia of Materials Science and Engineering. Vol. 2, (Met. A. , 8609-72-0335) 1240-1243, 1986
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Materials Science and Engineering
- Other Identifier
- 991022064710204721