Opening book details…
Can I read Interaction of Cracks and Dislocations with Grain Boundaries Investigated by Focus Ion Beam Microscopy and Nanoindentation Technique on EtoBox?
Interaction of Cracks and Dislocations with Grain Boundaries Investigated by Focus Ion Beam Microscopy and Nanoindentation Technique by Horst Vehoff; Michael Marx; Markus Welsch; Wolfgang Schäf; Bo Yang; Delphine Lemaire is a Engineering article available to read on EtoBox.
What is Interaction of Cracks and Dislocations with Grain Boundaries Investigated by Focus Ion Beam Microscopy and Nanoindentation Technique about?
Fracture and plastic deformation processes in metallic alloys are driven by dislocation multiplication and movement. The local microstructure influences both. For example in [1] it was shown that in anisotropic, coarse grained materials crack initiation during high cycle fatigue takes place on or near grain boundaries with high incompatibility stresses. Before crack initiation, in fatigue, these incompatibility stresses support the formation of dislocations structures [2, 3] like the bundle structure or persistent slip bands (PSBs) preferential near these boundaries. These differences in the dislocation structure near interfaces may be used as indicators for different degrees of local damage. So far fatigue is described by material parameters deduced from macroscopic tests like the Wöhler tests [4] or by crack propagation laws like the Paris law [5]. For most cases this is sufficient provided that the microstructure is small compared to the dimensions of the components because of the statistic distribution of the local processes. However, when microstructure and geometrical dimensions are in the same size scale, a local description and examination of the damage mechanisms is needed
Who reads Interaction of Cracks and Dislocations with Grain Boundaries Investigated by Focus Ion Beam Microscopy and Nanoindentation Technique?
It is typically read by researchers, students, and practitioners in Engineering.
- Author
- Horst Vehoff; Michael Marx; Markus Welsch; Wolfgang Schäf; Bo Yang; Delphine Lemaire
- Publisher
- Walter de Gruyter GmbH
- Published
- 2008
- Language
- EN
- Field
- Engineering (Physical Sciences)