Fabrication of In-situ Particle Reinforced Aluminum Matrix Composites with Al-Zr-O-B System

Xu Baojie; Zhu Yanshan; Zhao Yutao

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Fabrication of In-situ Particle Reinforced Aluminum Matrix Composites with Al-Zr-O-B System
Issue 12, Pages: 816-818(2006)
Published： 2006 ，
DOI：

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[1]徐宝杰,朱延山,赵玉涛.Al-Zr-O-B体系反应生成颗粒增强复合材料的研究[J].特种铸造及有色合金,2006(12):816-818+751-752.

Xu Baojie, Zhu Yanshan, Zhao Yutao. Fabrication of In-situ Particle Reinforced Aluminum Matrix Composites with Al-Zr-O-B System. [J]. Special Casting & Nonferrous Alloys (12):816-818(2006)
[1]徐宝杰,朱延山,赵玉涛.Al-Zr-O-B体系反应生成颗粒增强复合材料的研究[J].特种铸造及有色合金,2006(12):816-818+751-752. DOI：

Xu Baojie, Zhu Yanshan, Zhao Yutao. Fabrication of In-situ Particle Reinforced Aluminum Matrix Composites with Al-Zr-O-B System. [J]. Special Casting & Nonferrous Alloys (12):816-818(2006) DOI：

摘要

采用Al-Zr-O-B体系熔体反应生成了颗粒增强铝基复合材料。对其反应的热力学探讨结果表明

850℃的起始条件下反应可以自发进行。利用X射线衍射仪和扫描电子显微镜对生成的复合材料组织进行了分析

表明生成的增强相为Al2O3、Al3Zr和ZrB2

呈颗粒状

弥散分布

随反应物加入量的增加

复合材料的抗拉强度上升

伸长率下降。

Abstract

In-situ ZrBL

ZrAla and A12O3 particle reinforced aluminum matrix composites were prepared by the direct melt reaction in the system AI-Zr-O-B. The calculation of reactive thermo-dynamics of in-situ synthesized （ Al2O3 + Al2O3 + ZrB2） p/ Al composites shows that the reaction can self-proceed in the aluminum melt at initiating condition of 850 C. The observation of X-ray diffusion （XRD） and scanning electron microscope （ SEM） demonstrates that formed reinforced particles Al2O3

Al3Zr

ZrB2 are uniformly distributed into the composites. With the increasing in volume fraction of reactive particle

the tensile strength of the composites is raised and its elongation is descended.