Visualization of Dynamic Deformation Behavior of Al-Mg Alloys Using Electronic Speckle Pattern Interferometry

Abstract:

The shear band observed during tensile tests of AA5083 aluminum alloys with different grain sizes were visualized using a two-dimensional electronic speckle pattern interferometer. The effect of grain boundaries on shear band formation was investigated by extracting displacement and strain fields from interference fringe patterns and stress-strain curves. The intensity of stress oscillations and the strain level at which shear bands appeared were dependent on grain size. Small-grained specimens exhibited regular shear band formation with clear serrations, while large-grained specimens showed delayed and irregular bands with reduced stress oscillations. The formation and propagation of shear bands across grain boundaries were further analyzed from the perspective of wave dynamics.

• Periodical: Materials Science Forum (Volume 1175)
• Pages: 51-56
• DOI: https://doi.org/10.4028/p-FHV00r
• Online since: January 2026
• Authors: Yuto Takanezawa*, Tomohiro Sasaki, Sanichiro Yoshida
• Keywords: Aluminum Alloy, Band Formation, Electronic Speckle Pattern Interferometry, Shear Band

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