摘要
本文采用引入单晶Si籽晶的方法,考察Sr变质Al-22％Si合金中Si相的生长行为。结果表明Sr影响Si相的形核与生长。表面分析指出Sr在{111}_(Si)上的吸附是Sr影响Si相形核生长的原因,而变质共晶组织则是Sr使共晶领先相发生改变的结果。
By inserting the single crystal silicon seeds into Sr modified A1-22wt-%Si alloy melts, the fact that nucleation and growth of Si-phase are affectedby Sr addition has been confirmed. It is suggested that this effect is caused by theadsorption of Sr on {111}_(si), and the modification of eutectic structure results fromthe variation of leading phase in the eutectic from Si to α-Al
出处
《金属学报》
SCIE
EI
CAS
CSCD
北大核心
1989年第4期B244-B249,共6页
Acta Metallurgica Sinica
