caa a22 4500 463192583 CHVBK 20180406164913.0 cr unu---uuuuu 170326e20070101xx s 000 0 eng 10.1007/s10973-006-7837-2 doi (NATIONALLICENCE)springer-10.1007/s10973-006-7837-2 DSCanalysis of strengthening precipitates in ultrafine Al-Mg-Si alloys [Elektronische Daten] [M. Vedani, G. Angella, Paola Bassani, D. Ripamonti, A. Tuissi] Equal channel angular pressing (ECAP) was carried out on solution annealed samples of Al-Mg-Si-Zr and Al-Mg-Si-Zr-Sc alloys to achieve a substantial grain refinement of the materials. Post ECAP aging was then investigated on the ultrafine grained alloys by DSC and TEM analyses. DSC scans were carried out with heating rates ranging from 5 to 30°C min-1. Peak identification was performed by the support of literature information and TEM analyses. Precipitation kinetics revealed to be similar for both alloys but the Sc-free alloy showed a recrystallization peak at temperatures ranging from 310 to 340°C, depending on the strain accumulated during ECAP. On the contrary, the Sc-containing alloy showed a greater grain stability. Analyses of peak positions and of activation energies as a function of ECAP passes experienced by the samples revealed large modifications of precipitation kinetics in the ultrafine-grained alloys with respect to the coarse-grained materials. Springer-Verlag, 2007 aging behaviour nationallicence Al-Mg-Si alloys nationallicence ECAP nationallicence scandium nationallicence ultra-fine grained alloys nationallicence Vedani M. Dipartimento di Meccanica, Politecnico di Milano, Via La Masa 34, 20156, Milano, Italy aut Angella G. National Research Council, Institute for Energetics and Interphases CNR-IENI, Via R. Cozzi 53, 20125, Milano, Italy aut Bassani Paola National Research Council, Institute for Energetics and Interphases CNR-IENI, Corso Promessi Sposi 29, 23900, Lecco, Italy aut Ripamonti D. Dipartimento di Meccanica, Politecnico di Milano, Via La Masa 34, 20156, Milano, Italy aut Tuissi A. National Research Council, Institute for Energetics and Interphases CNR-IENI, Corso Promessi Sposi 29, 23900, Lecco, Italy aut Journal of Thermal Analysis and Calorimetry Kluwer Academic Publishers 87/1(2007-01-01), 277-284 1388-6150 87:1<277 2007 87 10973 https://doi.org/10.1007/s10973-006-7837-2 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10973-006-7837-2 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Vedani M. Dipartimento di Meccanica, Politecnico di Milano, Via La Masa 34, 20156, Milano, Italy aut NATIONALLICENCE 700 1- Angella G. National Research Council, Institute for Energetics and Interphases CNR-IENI, Via R. Cozzi 53, 20125, Milano, Italy aut NATIONALLICENCE 700 1- Bassani Paola National Research Council, Institute for Energetics and Interphases CNR-IENI, Corso Promessi Sposi 29, 23900, Lecco, Italy aut NATIONALLICENCE 700 1- Ripamonti D. Dipartimento di Meccanica, Politecnico di Milano, Via La Masa 34, 20156, Milano, Italy aut NATIONALLICENCE 700 1- Tuissi A. National Research Council, Institute for Energetics and Interphases CNR-IENI, Corso Promessi Sposi 29, 23900, Lecco, Italy aut NATIONALLICENCE 773 0- Journal of Thermal Analysis and Calorimetry Kluwer Academic Publishers 87/1(2007-01-01), 277-284 1388-6150 87:1<277 2007 87 10973 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer