MODIFICATION EFFECT OF Sr ON Al-Si ALLOYS

金属学报(英文版), 1990, 3(7): 23-27.

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

Keywords： Al-Si alloy , null , null

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.

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MODIFICATION EFFECT OF Sr ON Al-Si ALLOYS

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