Acoustic Emission as a Tool for Exploring Deformation Mechanisms in Magnesium and Its Alloys In Situ

JOM - Tập 68 - Trang 3057-3062 - 2016
Alexei Vinogradov1,2, Kristian Máthis3
1Department of Engineering Design and Materials, Norwegian University of Science and Technology (NTNU), Trondheim, Norway
2Institute of Advanced Technologies, Togliatti State University, Togliatti, Russia
3Department of Physics of Materials, Charles University, Prague, Czech Republic

Tóm tắt

Structural performance of magnesium alloys depends strongly on specific deformation mechanisms operating during mechanical loading. Therefore, in situ monitoring of the acting mechanisms is a key to performance tailoring. We review the capacity of the advanced acoustic emission (AE) technique to understand the interplay between two primary deformation mechanisms—dislocation slip and twinning—in real time scale. Details of relative contributions of dislocation slip and deformation twinning to the mechanical response of pure Mg and Mg-Al alloy are discussed in view of AE results obtained with the aid of recently proposed spectral and signal categorization algorithms in conjunction with with neutron diffraction data.

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Thông tin
Thông tin xuất bản

JOM

Tập 68

3057-3062

Thông tin tác giả