摘要
The liquid structure of Al71.6 Ge28.4 eutectic alloy was studied by X-ray diffractometer.For the liquid alloy Al71.6 Ge28.4,the structure has no change while the order increases with the decreasing temperature from 1150°C to 550°C.Meanwhile,the correlation between liquid structure and solid structure has also been analyzed by "the nanocrystal model".It is shown that the melt consists of 72.8% α clusters and 27.2% β clusters,but the liquid structure and solid structure have striking difference,which is one of the reasons to obtain a large undercooling easily for this alloy.
The liquid structure of Al71.6Ge28.4 eutectic alloy was studied by X-ray diffractometer. For the liquid alloy Al71.6Ge28.4, the structure has no change while the order increases with the decreasing temperature from 1150℃ to 550℃. Meanwhile, the correlation between liquid structure and solid structure has also been analyzed by ＂the nanocrystal model＂. It is shown that the melt consists of 72.8% α clusters and 27.2% β clusters, but the liquid structure and solid structure have striking difference, which is one of the reasons to obtain a large undercooling easily for this alloy.
基金
supported by the National Natural Science Foundation of China (Grant Nos.50395101 and 50571052)
