NEUTRON DIFFRACTION ANALYSIS OF PHASE PRECIPITATION IN SOLIDIFICATION OF HYPEREUTECTIC Al-Si ALLOYS WITH THE ADDITION OF Cu AND Mg

被引：0

作者：

Sediako, D. ^{[1
]}

Kasprzak, W. ^{[2
]}

机构：

[1] CNR, Canadian Neutron Beam Ctr, Chalk River, ON, Canada

[2] Canmet MTL, Nat Resources Canada, Hamilton, ON, Canada

来源：

LIGHT METALS 2012 | 2012年

关键词：

hypereutectic aluminum-silicon alloy; solidification; neutron diffraction; solid phase evolution; thermal analysis; thermodynamic calculations; DIE-CASTING ALLOY; MICROSTRUCTURE;

D O I：

暂无

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

A good understanding of the kinetics of evolution of solid phases during solidification of hypereutectic aluminum alloys is a key factor in controlling the as-cast microstructure and, in turn, enhancing the service properties of industrial alloys. A study was performed to evaluate the solidification kinetics for two hypereutectic Al-19% Si alloys with the addition of 3% Cu and 3% Cu+1% Mg. This study included thermodynamic calculations of the solidification process using the FactSage (TM) 6.2 software package, as well as experimental thermal analysis, and neutron diffraction. The study revealed kinetics of solid Al, solid Si, Al2CU, and Mg2Si evolution, as well as an individual effect of Cu and Mg alloying additions on the solidification path of the Al-Si system.

引用

页码：355 / 364

页数：10

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