TY - JOUR
T1 - Crystal structure of a new quaternary Mg-Zn-Ca-Li phase
AU - Remennik, Sergei
AU - Xu, Chunjie
AU - Brant, Reut
AU - Meshi, Louisa
AU - Shechtman, Dan
PY - 2012/3
Y1 - 2012/3
N2 - In course of a study of high strength, ductile alloys based on the Mg-Li system, we have identified a new quaternary phase with a composition of Mg 31Zn 26Ca 13Li 8. The structure of this phase was investigated by Transmission Electron Microscopy (TEM) using the Convergent Beam Electron Diffraction (CBED) technique. Full atomic model is proposed using direct methods applied to powder X-ray diffraction data. The phase has a cubic primitive unit cell with lattice parameter a = 9.386(8) and its crystal symmetry belongs to the Pm3 (No. 200) space group. The unit cell of the new phase exhibits a new structure type, which is a variant of the Mg 2Zn 11 structure. The reliability factors characterizing the Rietveld refinement procedure are: R p = 8.6%, R wp = 12.4%, R B = 6.9% and R f = 4.4%.
AB - In course of a study of high strength, ductile alloys based on the Mg-Li system, we have identified a new quaternary phase with a composition of Mg 31Zn 26Ca 13Li 8. The structure of this phase was investigated by Transmission Electron Microscopy (TEM) using the Convergent Beam Electron Diffraction (CBED) technique. Full atomic model is proposed using direct methods applied to powder X-ray diffraction data. The phase has a cubic primitive unit cell with lattice parameter a = 9.386(8) and its crystal symmetry belongs to the Pm3 (No. 200) space group. The unit cell of the new phase exhibits a new structure type, which is a variant of the Mg 2Zn 11 structure. The reliability factors characterizing the Rietveld refinement procedure are: R p = 8.6%, R wp = 12.4%, R B = 6.9% and R f = 4.4%.
KW - A. Intermetallics
KW - B. Crystallography
KW - B. Phase identification
KW - F. Chemical analysis
KW - F. Diffraction (electron and X-ray)
KW - F. Electron microscopy
UR - http://www.scopus.com/inward/record.url?scp=82055194265&partnerID=8YFLogxK
U2 - 10.1016/j.intermet.2011.09.013
DO - 10.1016/j.intermet.2011.09.013
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AN - SCOPUS:82055194265
SN - 0966-9795
VL - 22
SP - 62
EP - 67
JO - Intermetallics
JF - Intermetallics
ER -