Acta Metallurgica Sinica (English Letters) ›› 1990, Vol. 3 ›› Issue (7): 23-27.

• Research paper • Previous Articles     Next Articles

MODIFICATION EFFECT OF Sr ON Al-Si ALLOYS

LIU Qiyang LI Qingchun ZHANG Jiren Harbin Institute of Technology,Harbin,China LIU Qiyang,Division of Foundry,Department of Mechanical Engineering No.2,South China University of Technology,Guangzhou,China   

  • Received:1990-07-11 Revised:1990-07-11 Online:1990-07-11 Published:2009-10-10

Abstract: By inserting the single crystal silicon seeds into Sr modified Al-22wt-% Si alloy melts,the fact that nucleation and growth of Si-phase are affected by Sr addition has been confirmed.It is suggested that this effect is caused by the adsorption of Sr on{111}_(si),and the modification of eutectic structure results from the variation of leading phase in the eutectic from Si to α-Al.

Key words: Al-Si alloy, Sr, modification