EFFECT OF STRONTIUM ON VISCOSITY AND LIQUID STRUCTURE OF Al-Si EUTECTIC ALLOYS

被引：0

作者：

Shankar, Sumanth ^{[1
]}

Prakash, Srirangam V. S. ^{[1
]}

Malik, Minhajuddin ^{[1
]}

Jeyakumar, Manickaraj ^{[1
]}

Walker, Michael J. ^{[2
]}

Hamed, Mohamed ^{[1
]}

机构：

[1] McMaster Univ, Dept Mech Engn, Light Met Casting Res Ctr LMCRC, Hamilton, ON L8S 4L7, Canada

[2] Univ Michigan, Res & Dev Ctr, Ann Arbor, MI 48109 USA

来源：

SHAPE CASTING: 3RD INTERNATIONAL SYMPOSIUM 2009 | 2009年

关键词：

Al-Si alloys; Eutectic alloy; Modification of Al-Si; viscosity of metals; structure of liquid alloys; SILICON;

D O I：

暂无

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

This study aims to present conclusive evidence that trace level addition of Sr in AI-Si hypoeutectic alloys change the liquid melt characteristics and alter the nucleation environment of the eutectic phases. High temperature theological experiments measuring viscosity of Al-Si eutectic melt with and without Sr addition show that Sr significantly alters the melt viscosities at various shear rate regimes. Further, liquid diffraction experiments have been carried out on Al-12.5wt%Si (eutectic) alloy using high-energy synchrotron X-ray beam source to determine the effect of Sr oil various liquid structure parameters such as structure factor, pair distribution function and coordination numbers at various melt superheat temperatures. The analysis of the data suggests that Sr changes the nucleation environment of the eutectic Si phase. Further, the effect of Sr on the atomic arrangement of the Si atom with respect of Si and Al atoms in the liquid will be quantified and presented.

引用

页码：173 / +

页数：2

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