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Deformation mechanisms underlying tension-compression asymmetry in magnesium alloy ZK60 revealed by acoustic emission monitoring

Vinogradov, Alexei; Orlov, Dmitry; Danyuk, Alexei and Estrin, Yuri (2015) In Materials Science and Engineering A 621. p.243-251
Abstract

This study is aimed at clarifying the microscopic mechanisms that determine a pronounced asymmetry of plastic deformation with respect to tension and compression in magnesium alloys, even having a random texture. The specific object of the present investigation is the Mg-Zn-Zr alloy ZK60. The mechanisms in question are based on a synergistic interplay between dislocation slip and deformation twinning. The details of the relative contributions of these principal processes were studied by monitoring the acoustic emission (AE) underpinned by robust AE signal classification developed recently. Through the cluster analysis of AE time series in spectral domain, the sequences of the predominant deformation mechanisms were identified for early... (More)

This study is aimed at clarifying the microscopic mechanisms that determine a pronounced asymmetry of plastic deformation with respect to tension and compression in magnesium alloys, even having a random texture. The specific object of the present investigation is the Mg-Zn-Zr alloy ZK60. The mechanisms in question are based on a synergistic interplay between dislocation slip and deformation twinning. The details of the relative contributions of these principal processes were studied by monitoring the acoustic emission (AE) underpinned by robust AE signal classification developed recently. Through the cluster analysis of AE time series in spectral domain, the sequences of the predominant deformation mechanisms were identified for early stages of cyclic loading with opposite directions of the first loading excursion into tension or compression.

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author
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Acoustic emission, Deformation mechanisms, Mechanical properties, Signal categorization, Wrought magnesium alloys
in
Materials Science and Engineering A
volume
621
pages
9 pages
publisher
Elsevier
external identifiers
  • scopus:84910602835
ISSN
0921-5093
DOI
10.1016/j.msea.2014.10.081
language
English
LU publication?
no
id
c522e271-8864-4c39-a82a-101b83bbce5f
date added to LUP
2016-06-20 15:30:31
date last changed
2017-09-24 04:58:27
@article{c522e271-8864-4c39-a82a-101b83bbce5f,
  abstract     = {<p>This study is aimed at clarifying the microscopic mechanisms that determine a pronounced asymmetry of plastic deformation with respect to tension and compression in magnesium alloys, even having a random texture. The specific object of the present investigation is the Mg-Zn-Zr alloy ZK60. The mechanisms in question are based on a synergistic interplay between dislocation slip and deformation twinning. The details of the relative contributions of these principal processes were studied by monitoring the acoustic emission (AE) underpinned by robust AE signal classification developed recently. Through the cluster analysis of AE time series in spectral domain, the sequences of the predominant deformation mechanisms were identified for early stages of cyclic loading with opposite directions of the first loading excursion into tension or compression.</p>},
  author       = {Vinogradov, Alexei and Orlov, Dmitry and Danyuk, Alexei and Estrin, Yuri},
  issn         = {0921-5093},
  keyword      = {Acoustic emission,Deformation mechanisms,Mechanical properties,Signal categorization,Wrought magnesium alloys},
  language     = {eng},
  month        = {01},
  pages        = {243--251},
  publisher    = {Elsevier},
  series       = { Materials Science and Engineering A},
  title        = {Deformation mechanisms underlying tension-compression asymmetry in magnesium alloy ZK60 revealed by acoustic emission monitoring},
  url          = {http://dx.doi.org/10.1016/j.msea.2014.10.081},
  volume       = {621},
  year         = {2015},
}