Non-Destructive Criteria of Plastic Deformation and Fracture in Structural Metals

Abstract:

The investigations of ultrasound Rayleigh wave parameters changing depending on localized plastic strain in AlCu4MgSi alloy and austenitic stainless steel AISI 304 are presented in this paper. Measurements of the ultrasound parameters and localized strain bands motion were carried out in-situ during the tensile tests of the specimens at the constant rate and room temperature. It has been found that the measurement of ultrasound velocity allows detecting the initiation of a localized strain band and its location relative to the acoustic measurement area independently of the deformation mechanism.

• Periodical: Solid State Phenomena (Volume 279)
• Pages: 16-20
• DOI: https://doi.org/10.4028/www.scientific.net/SSP.279.16
• Online since: August 2018
• Authors: Alexey Lunev*, Mikhail V. Nadezhkin, Julia Li, Svetlana Barannikova, Lev Zuev
• Keywords: Alloys, Plastic Deformation, Rayleigh Waves, Ultrasound

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