caa a22 4500 463228294 CHVBK 20180405153234.0 cr unu---uuuuu 170326e20070901xx s 000 0 eng 10.1007/s10853-007-1531-z doi (NATIONALLICENCE)springer-10.1007/s10853-007-1531-z Evolution of microstructures and phases of Al-Mg alloy under 4GPa high pressure [Elektronische Daten] [Z. Wei, Z. Wang, H. Wang, L. Cao] Optical microscope (OM), energy dispersive X-ray (EDX) analysis, differential scanning calorimetry (DSC), X-ray diffraction (XRD) and transmission electron microscope (TEM) were applied to investigate the solidification microstructures and phases of Al-9.6wt.% Mg alloy which solidified under 4GPa high pressure with the melting temperature 1,153K. Fine dendritic microstructures were obtained, and the second dendritic arm spacing reduced. Area fraction of the primary α-Al phase increased and that of the second phase decreased. In addition, the solid solubility of Mg in α-Al phase increased. The lattice constant of α-Al phase increased. Specially, the new double phase regions (α-Al′+Al x Mg y ) formed besides a small amount of Al3Mg2 phases under high pressure. The Al x Mg y phase presented a mean size of about 20nm, and had the hexagonal structure with the lattice constant of a=0.288nm, c=0.8165nm probably. Wherein the lattice constant of α-Al′ phase differed from that of α-Al phase greatly. Moreover, evolution mechanism of microstructures and phases under 4GPa high pressure was discussed. Springer Science+Business Media, LLC, 2007 Wei Z. School of Materials Science and Engineering, Harbin Institute of Technology, 150001, Harbin, China aut Wang Z. School of Materials Science and Engineering, Harbin Institute of Technology, 150001, Harbin, China aut Wang H. School of Materials Science and Engineering, Harbin Institute of Technology, 150001, Harbin, China aut Cao L. School of Materials Science and Engineering, Harbin Institute of Technology, 150001, Harbin, China aut Journal of Materials Science Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 42/17(2007-09-01), 7123-7128 0022-2461 42:17<7123 2007 42 10853 https://doi.org/10.1007/s10853-007-1531-z text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10853-007-1531-z text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Wei Z. School of Materials Science and Engineering, Harbin Institute of Technology, 150001, Harbin, China aut NATIONALLICENCE 700 1- Wang Z. School of Materials Science and Engineering, Harbin Institute of Technology, 150001, Harbin, China aut NATIONALLICENCE 700 1- Wang H. School of Materials Science and Engineering, Harbin Institute of Technology, 150001, Harbin, China aut NATIONALLICENCE 700 1- Cao L. School of Materials Science and Engineering, Harbin Institute of Technology, 150001, Harbin, China aut NATIONALLICENCE 773 0- Journal of Materials Science Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 42/17(2007-09-01), 7123-7128 0022-2461 42:17<7123 2007 42 10853 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer