TY - JOUR
T1 - The structure of guinier-preston zones in an Mg-2at%Gd-1 at%Zn alloy studied by transmission electron microscopy
AU - Nishijima, Masahiko
AU - Hiraga, Kenji
AU - Yamasaki, Michiaki
AU - Kawamura, Yoshihiko
PY - 2008/1
Y1 - 2008/1
N2 - Planar Guinier-Preston zones (GP-zones) parallel to a basal plane of an Mg hexagonal lattice are found together with β′ and β1 precipitates, which have been found in Mg-Gd alloys, in an Mg-2at%Gd-1 at%Zn (Mg97Gd2Zn1) alloy aged at 200°C for 150hrs. From the combination of high-resolution transmission electron microscopy (HRTEM) and high-angle annular detector dark field scanning transmission electron microscopy (HAADF-STEM), we can determine the structure of the GP-zone, in which Gd and/or Zn atoms occupy at ordered positions in two close-packed planes sandwiching a close-packed plane ot Mg atoms.
AB - Planar Guinier-Preston zones (GP-zones) parallel to a basal plane of an Mg hexagonal lattice are found together with β′ and β1 precipitates, which have been found in Mg-Gd alloys, in an Mg-2at%Gd-1 at%Zn (Mg97Gd2Zn1) alloy aged at 200°C for 150hrs. From the combination of high-resolution transmission electron microscopy (HRTEM) and high-angle annular detector dark field scanning transmission electron microscopy (HAADF-STEM), we can determine the structure of the GP-zone, in which Gd and/or Zn atoms occupy at ordered positions in two close-packed planes sandwiching a close-packed plane ot Mg atoms.
KW - GP-zone
KW - Guinier-Preston zone
KW - Magnesium-gadolinium-zinc
KW - Precipitate
KW - Transmission electron microscopy
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U2 - 10.2320/matertrans.MEP2007257
DO - 10.2320/matertrans.MEP2007257
M3 - Article
AN - SCOPUS:39549087898
VL - 49
SP - 227
EP - 229
JO - Materials Transactions
JF - Materials Transactions
SN - 1345-9678
IS - 1
ER -