M.-X.Zhang
,
P.M.Kelly
,
M.Qian
,
J.A.Taylor
材料科学技术（英文）
An edge-to-edge matching model has been used to analyze the crystallographic features between Mg matrix and three commonly accepted heterogeneous nucleants for Mg grains, Al4C3, Al2CO and Al8(Mn, Fe)5. The model has predicted that Al2CO is the most effective nucleant of the three compounds assessed for Mg grains and that Al4C3 can be a nucleant for Mg grains, but it is not as effective as Al2CO. This prediction is consistent with most recent experimental results. The Al8(Mn, Fe)5 intermetallic compound is predicted to have the lowest efficiency as a grain refiner. The model may be used to provide theoretical guidance for selection of new and potent grain refiners for Mg-Al based alloys.
关键词:
Crystallography
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