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Plasticity analysis by synchrotron radiation in a Mg97Y2Zn1 alloy with bimodal grain structure and containing LPSO phase

AuthorsGarcés, Gerardo; Morris, David G.; Muñoz-Morris, Mª Antonia; Pérez Zubiaur, Pablo; Tolnai, D.; Mendis, C.; Stark, A.; Lim, H. K.; Kim, S.; Shell, N.; Adeva, Paloma
KeywordsSynchrotron radiation diffraction
Plastic deformation
Deformation mechanisms
Internal stresses
Magnesium alloy
Issue Date2015
CitationActa Materialia 94: 78-86 (2015)
Abstract© 2015 Acta Materialia Inc. All rights reserved. Deformation behaviour has been examined by synchrotron radiation diffraction in an extruded magnesium - long-period-stacking-order phase alloy comprising three components of microstructure. The variation of internal strains and intensities of the important crystallographic planes of the two phases has been examined during compression at several temperatures. The long-period-stacking-order phase remains elastic to stresses beyond the macroscopic yield stress while deformation in the magnesium matrix is dominated by twinning and basal slip, with the coarse-grained regions deforming plastically at stresses well below the macroscopic yield stress while regions with fine grain size deform plastically only at much higher stresses.
Identifiersdoi: 10.1016/j.actamat.2015.04.048
issn: 1359-6454
Appears in Collections:(CENIM) Artículos
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