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Eutectic Solidification in Near-eutectic Al-Si Casting Alloys

H.C. Liao M. Zhang J.J. Bi K. Ding X. Xi S.Q. Wu

材料科学技术（英文）

Eutectic solidification in near-eutectic Al-13 wt pct Si casting alloys and the effect of trace addition of boron or strontium on it have been investigated using thermal analysis and microstructural characterization. In unmodified alloy, dual eutectic structure has been observed. The coarse eutectic...

关键词: Al-Si alloy , eutectic , solidification , dual eutectic grains , grain refinement

STUDY ON STRUCTURES OF Al-CuAl_2 EUTECTIC SOLIDIFIED UNDER ELECTROMAGNETIC STIRRING

W.Q. Zhang , Q.M. Liu , Y.F. Zhu , Y.S. Yang and Z.Q. Hu(State Key Laboratory of RSA , Institute of Metal Research , Chinese Academy of Sciences , Shenyang 110015 , China)

金属学报(英文版)

An investigation on electromagnetically-stirred solidification of Al-CuAl2 eutectic system is presented in this paper. With electromagnetic stirring in solidification, structural transition from lamellar to rod-like eutectic has been found in the as-cast structures, and provided strong stirring is a...

关键词: electromagnetic stirring , null , null , null

CALCULATING MODELS OF MASS ACTION CONCENTRATIONS FOR MATTES (Cu_2S-FeS-SnS)INVOLVING EUTECTIC

J. Zhang (Department of Metallurgy , University of Science and Technology Beijing , Beijing 100083 , China)

金属学报(英文版)

Based on the facts that cations and anions of molten salts and binary basic oxide solid solutions do not separate from each other as well as that the electric conductivities of mattes are greater than that of salts and basic oxide solid solutions, the calculating models of mass action concentrations...

关键词: matte , null , null , null

第三代单晶高温合金DD33固溶处理中组织的演变

刘心刚 , 雷强 , 王莉 , 李相伟 , 钱宝 , 楼琅洪

材料研究学报

通过金相显微镜(OM)、扫描电镜(SEM)和电子探针(EPMA)等手段研究了第三代单晶高温合金DD33在固溶处理过程中组织的演变.结果表明:在第三代单晶高温合金DD33中,枝晶间γ'相在1310℃保温时明显长大,而在1320℃/2 h固溶后完全溶解;(γ+γ')共晶在高于1320℃时显著溶解;MC碳...

关键词: 金属材料 , 单晶高温合金 , 固溶处理 , 微观组织 , 共晶

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