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Structure and properties of Mg-Al-Ca alloy after severe plastic deformation

conference contribution
posted on 2008-01-01, 00:00 authored by S V Dobatkin, Y Estrin, L L Rokhlin, M V Popov, Rimma LapovokRimma Lapovok, T V Dobatkina, V N Timofeev, N I Nikitina
Severe plastic deformation of a Mg-Al-Ca alloy resulted in different types of grain structure. High pressure torsion (HPT) was shown to lead to the formation of a nanocrystalline structure with a grain size of 100-200 nm, while equal channel angular pressing (ECAP) produced ultrafine grained (UFG) or submicrocrystalline (SMC) structures, depending on the ECAP temperature. An UFG structure with a grain size of 2-5 μm was formed at 300°C, as distinct from a finer SMC structure with a grain size of 300-800 nm formed at a lower temperature (220°C). The possibility of increasing the strength of the alloy in the UFG condition by a factor of 1.5-2, combined with a reasonable level of ductility and enhanced functional properties was thus demonstrated. ECAP of annealed Mg-Al-Ca with the formation of UFG structure was shown to lead to increased yield strength (by a factor of 2) and enhanced tensile ductility (by a factor of 3). © 2008 Trans Tech Publications.



Chinese Materials Congress 2012


584-586 PART 1


559 - 564


Trans Tech Publications


Taiyuan, China

Place of publication

Durnten-Zurich, Switzerland

Start date


End date






Publication classification

E Conference publication; EN.1 Other conference paper

Title of proceedings

Materials Science Forum