An overview of the effects of bifilms on the structure and properties of cast alloys
An overview of the effects of bifilms on the structure and properties of cast alloys
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DOI:
10.1007/bf02735006
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发表时间:
2006-12-01
影响因子:
3
通讯作者:
Campbell, John
中科院分区:
文献类型:
--
作者:
Campbell, John
A short overview of the role of bifilms (double oxide films) in cast Al alloys includes control of (1) grain size, because of the suppression of convection; (2) dendrite-arm spacing (DAS) as a result of isolated regions of liquid devoid of nuclei that consequently undercool; and (3) the mechanism of the modification of Al-Si alloys by Na and Sr, which is explained for the first time by the deactivation of bifilms as substrates for Si nucleation and growth.