Microstructure and Properties of In-situ （Al2O3+Al3Zr）p/A356 Composites Synthesized by Direct Melting Reaction Combining with High Intensity Ultrasonic

Ding Jiashan; Zhao Yutao; Zhang Songli; Chen Gang

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Microstructure and Properties of In-situ （Al₂O₃+Al₃Zr）_p/A356 Composites Synthesized by Direct Melting Reaction Combining with High Intensity Ultrasonic
Issue 5, Pages: 385-387(2008)
Published： 2008 ，
DOI：

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[1]丁加善,赵玉涛,张松利,陈刚.超声化学原位合成(Al_2O_3+Al_3Zr)_p/A356复合材料[J].特种铸造及有色合金,2008(05):385-387+327.

Ding Jiashan, Zhao Yutao, Zhang Songli, et al. Microstructure and Properties of In-situ （Al₂O₃+Al₃Zr）_p/A356 Composites Synthesized by Direct Melting Reaction Combining with High Intensity Ultrasonic. [J]. Special Casting & Nonferrous Alloys (5):385-387(2008)
[1]丁加善,赵玉涛,张松利,陈刚.超声化学原位合成(Al_2O_3+Al_3Zr)_p/A356复合材料[J].特种铸造及有色合金,2008(05):385-387+327. DOI：

Ding Jiashan, Zhao Yutao, Zhang Songli, et al. Microstructure and Properties of In-situ （Al₂O₃+Al₃Zr）_p/A356 Composites Synthesized by Direct Melting Reaction Combining with High Intensity Ultrasonic. [J]. Special Casting & Nonferrous Alloys (5):385-387(2008) DOI：

摘要

采用熔体反应法

并在反应过程中施加高能超声

合成了（Al2O3+Al3Zr）p/A356复合材料。XRD和SEM分析表明

生成的增强颗粒为Al2O3和Al3Zr;颗粒尺寸细小

平均粒径尺寸为1μm

在基体中均匀分布;共晶Si在高能超声作用下显著细化

变短并呈粒状。研究表明

经过高能超声处理后

其抗拉强度比未加高能超声处理的复合材料提高了近20%

达到了381.4MPa。

Abstract

In-situ （Al2O3+Al3Zr）p/A356 composites were synthesized by direct melting reaction combining with high intensity ultrasonic. The microstructure and properties of synthesized composites were investigated by XRD（X-ray diffraction） and SEM （scanning electron microscope）. It is found that the reinforcements Al2O3 and Al3Zr with average size of 1μm can be observed in the matrix alloy

which is uniformly distributed into the composites. Eutectic Si phase in A356 alloy can be broken into Si particle by high intensity ultrasonic

exhibiting great refinement effects. The tensile strength of ultrasonic treated composites reaches up to 381.4 MPa

which is increased by about 20% compared with that of ones without treated by high intensity ultrasonic.

关键词

高能超声原位反应铝基复合材料力学性能

Keywords

High Intensity UltrasonicIn-Situ ReactionAluminum Matrix CompositesMechanical Properties

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