Abstract
High-speed video recording has been used in the in situ investigation of the spatio-temporal bands of a macroscopically localized deformation in the unsteady plastic flow of an Al-Mg alloy subjected to a constant stress increase rate. It is shown that the main mechanism of the development of deformation jumps is the cascade multiplication of the Savart-Masson deformation bands. This mechanism is compared to the discontinuous deformation models.
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