Dynamics of a Lüders Band and Destruction of an Aluminum-Magnesium Alloy, Initiated by a Stress Concentrator
- Tambov State University (Russian Federation)
Spatio-temporal localization of deformation and the rupture of the aluminum-magnesium AlMg6 alloy, initiated by a geometrical stress concentrator, are studied in situ by video recording at a speed of 500 to 20000 frames/s. It is established that a stress concentrator in the form of a small notch with a depth about 1% of the width of a flat specimen is an attractor of bands of macrolocalized plastic deformation, starting from a Lüders band and ending with the start of the main crack. The key role of intersecting deformation macrobands in the development of the main crack is revealed. Possible micromechanisms of viscous destruction associated with the dynamics of the intersection of deformation bands are discussed.
- OSTI ID:
- 22771442
- Journal Information:
- Physics of the Solid State, Vol. 60, Issue 2; Other Information: Copyright (c) 2018 Pleiades Publishing, Ltd.; Country of input: International Atomic Energy Agency (IAEA); ISSN 1063-7834
- Country of Publication:
- United States
- Language:
- English
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