Effect of mixed rare earth oxides and CaCO3 modification on the microstructure of an in-situ Mg2Si/Al-Si composite

被引：13

作者：

Liu Zheng ^{[1
]}

Lin Jixing ^{[1
]}

Jing Qingxiu ^{[1
]}

机构：

[1] Jiangxi Univ Sci & Technol, Fac Mat & Chem Engn, Ganzhou 341000, Peoples R China

来源：

RARE METALS | 2009年 / 28卷 / 02期

关键词：

hypereutectic alloys; Al-Si alloys; composite; rare earth oxides; modification; MECHANICAL-PROPERTIES; PRIMARY SILICON; ALLOYS; MG2SI; GROWTH; CAST;

D O I：

10.1007/s12598-009-0034-2

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The effects of mixed rare earth oxides and CaCO3 on the microstructure of an in-situ Mg2Si/Al-Si hypereutectic alloy composite were investigated by optical microscope, scanning electron microscope, and energy dispersive spectrum analysis. The results showed that the morphology of the primary Mg2Si phase particles changed from irregular or crosses to polygonal shape, their sizes decreased from 75 A mu m to about 25 A mu m, and the compound of both the oxide and CaCO3 was better than either the single mixed rare earth oxides or CaCO3.

引用

页码：169 / 174

页数：6

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