caa a22 4500 463230876 CHVBK 20180405153241.0 cr unu---uuuuu 170326e20070301xx s 000 0 eng 10.1007/s10853-006-0977-8 doi (NATIONALLICENCE)springer-10.1007/s10853-006-0977-8 DSC and TEM analysis of lattice defects governing the mechanical properties of an ECAP-processed magnesium alloy [Elektronische Daten] [B. Mingler, O. Kulyasova, R. Islamgaliev, G. Korb, H. Karnthaler, M. Zehetbauer] The mechanical properties of the Mg alloy AM60 can be improved significantly by severe plastic deformation (SPD). The lower the temperature (down to 150°C) of equal channel angular pressing (ECAP) the higher is the resulting strength (up to 310MPa) which can be ascribed to the concomitant decrease of grain size (down to 1μm). After ECAP-processing at temperatures 150-210°C the ductility remains at about the same high level (∼15%) as in the initial material. This is explained with the presence of Al12Mg17 precipitates with a size of about 500nm, which decrease the remaining concentration of Al in the solid solution of the matrix. Differential scanning calorimetry (DSC) revealed four peaks during heating runs. The most remarkable peak occurs at 390°C in the initial sample, and at 360°C in the material ECAPed at 150°C. Transmission electron microscopy (TEM) analyses showed that this peak can be associated with the dissolution of the Al12Mg17 precipitates as well as with the annealing of dislocations and possibly vacancy clusters, and that ECAP has the potential to induce a shift of a phase boundary to lower temperatures because of ECAP induced lattice defects. Springer Science+Business Media, LLC, 2006 Mingler B. Institute of Materials Physics, University of Vienna, Boltzmanngasse 5, A-1090, Vienna, Austria aut Kulyasova O. Institute of Physics of Advanced Materials, Ufa State Aviation Technical University, K.Marks 12, 450000, Ufa, Russia aut Islamgaliev R. Institute of Physics of Advanced Materials, Ufa State Aviation Technical University, K.Marks 12, 450000, Ufa, Russia aut Korb G. Austrian Research Center Seibersdorf GmbH, Seibersdorf, Austria aut Karnthaler H. Institute of Materials Physics, University of Vienna, Boltzmanngasse 5, A-1090, Vienna, Austria aut Zehetbauer M. Institute of Materials Physics, University of Vienna, Boltzmanngasse 5, A-1090, Vienna, Austria aut Journal of Materials Science Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 42/5(2007-03-01), 1477-1482 0022-2461 42:5<1477 2007 42 10853 https://doi.org/10.1007/s10853-006-0977-8 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10853-006-0977-8 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Mingler B. Institute of Materials Physics, University of Vienna, Boltzmanngasse 5, A-1090, Vienna, Austria aut NATIONALLICENCE 700 1- Kulyasova O. Institute of Physics of Advanced Materials, Ufa State Aviation Technical University, K.Marks 12, 450000, Ufa, Russia aut NATIONALLICENCE 700 1- Islamgaliev R. Institute of Physics of Advanced Materials, Ufa State Aviation Technical University, K.Marks 12, 450000, Ufa, Russia aut NATIONALLICENCE 700 1- Korb G. Austrian Research Center Seibersdorf GmbH, Seibersdorf, Austria aut NATIONALLICENCE 700 1- Karnthaler H. Institute of Materials Physics, University of Vienna, Boltzmanngasse 5, A-1090, Vienna, Austria aut NATIONALLICENCE 700 1- Zehetbauer M. Institute of Materials Physics, University of Vienna, Boltzmanngasse 5, A-1090, Vienna, Austria aut NATIONALLICENCE 773 0- Journal of Materials Science Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 42/5(2007-03-01), 1477-1482 0022-2461 42:5<1477 2007 42 10853 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer