Effect of grain size on prismatic slip in Mg–3Al–1Zn alloy

The grain size of Mg–3Al–1Zn magnesium alloy was systematically varied from 33μm down to 350nm, while keeping the crystallographic texture nearly constant, via multi-temperature equal-channel angular processing. Nearly the same texture allowed the activation of mostly prismatic slip in tension and t...

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Bibliographic Details
Published inScripta materialia Vol. 67; no. 5; pp. 439 - 442
Main Authors Razavi, S.M., Foley, D.C., Karaman, I., Hartwig, K.T., Duygulu, O., Kecskes, L.J., Mathaudhu, S.N., Hammond, V.H.
Format Journal Article
LanguageEnglish
Published Elsevier Ltd 01.09.2012
Subjects
Equal-channel angular pressing/extrusion
Grain size
Hall–Petch relation
Magnesium alloys
Prismatic slip
Grain size
Prismatic slip
Hall–Petch relation
Magnesium alloys
Equal-channel angular pressing/extrusion
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Summary:The grain size of Mg–3Al–1Zn magnesium alloy was systematically varied from 33μm down to 350nm, while keeping the crystallographic texture nearly constant, via multi-temperature equal-channel angular processing. Nearly the same texture allowed the activation of mostly prismatic slip in tension and thus evaluation of the effect of grain size on prismatic slip. The maximum tensile yield strength of 385 MPa and ultimate tensile strength of 455MPa were achieved in materials with an average grain size of 350nm, accompanied with 13% ductility.
ISSN:1359-6462
1872-8456
DOI:10.1016/j.scriptamat.2012.05.017