Effects of Ultrasonic Vibration on Microstructure of Nano-SiC<sub>p</sub>/A356 Composites

Yuan Du; Hu Kun; Wu Shusen; LüShulin; Liu Jianping

doi:10.15980/j.tzzz.2019.04.021

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Effects of Ultrasonic Vibration on Microstructure of Nano-SiC_p/A356 Composites
Vol. 39, Issue 4, Pages: 430-434(2019)
Published： 2019 ，
DOI： 10.15980/j.tzzz.2019.04.021

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[1]袁渡,胡坤,吴树森,吕书林,刘建平.超声对纳米SiC_p增强A356铝基复合材料微观组织的影响[J].特种铸造及有色合金,2019,39(04):430-434.

Yuan Du, Hu Kun, Wu Shusen, et al. Effects of Ultrasonic Vibration on Microstructure of Nano-SiC_p/A356 Composites. [J]. Special Casting & Nonferrous Alloys 39(4):430-434(2019)
[1]袁渡,胡坤,吴树森,吕书林,刘建平.超声对纳米SiC_p增强A356铝基复合材料微观组织的影响[J].特种铸造及有色合金,2019,39(04):430-434. DOI： 10.15980/j.tzzz.2019.04.021.

Yuan Du, Hu Kun, Wu Shusen, et al. Effects of Ultrasonic Vibration on Microstructure of Nano-SiC_p/A356 Composites. [J]. Special Casting & Nonferrous Alloys 39(4):430-434(2019) DOI： 10.15980/j.tzzz.2019.04.021.

摘要

采用固液混合铸造工艺制备了纳米SiC

含量为2%的增强A356复合材料

研究了超声处理对复合材料中α-Al相和共晶Si的细化效果

以及纳米颗粒在此过程中的作用。结果表明

随着超声时间延长

α-Al相的二次枝晶间距和共晶Si的尺寸明显减小。当超声时间为3min时

α-Al的二次枝晶间距为8.1μm

较未进行超声处理的复合材料下降了49%;共晶Si的当量直径和长宽比分别是0.92μm和2.33

较未进行超声处理的复合材料分别下降了42%和32%。超声处理可以通过调控纳米SiC

的分布来影响纳米SiC

对α-Al与共晶Si相的细化效果。

Abstract

The nano-SiC

/A356 Al-matrix composites containing 2% nano-SiC

were synthesized with solid-liquid mixed casting method.The effects of ultrasonic vibration（UV）treatment on refinement of primary Al phase and eutectic Si phase in the composites prepared were analyzed

and the role of nano-SiC

distribution was described.The results show that both of the secondary dendritic arm spacing（SDAS）ofα-Al grains and the size of eutectic Si phase are decreased with the increase of the UV time.With UV time of 3 min

SDAS ofα-Al in the composites is 8.1μm

which is reduced by 49%than that of A356 matrix alloy.The mean diameter and aspect ratio of eutectic Si phase in the composites are 0.92μm and 2.33

which are reduced by 42%and 32%

respectively

than those of A356 matrix alloy without ultrasonic vibration treatment.The UV treatment can affect the refining effects by regulating the distribution of nano-SiC

关键词

金属基复合材料纳米SiCpA356铝合金超声处理

Keywords

Aluminum Matrix CompositesNano-SiCpA356Matrix AlloyUltrasonic Vibration

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Effects of Particle Content on Microstructure and Mechanical Properties of SiC_p/A356 Composites

Effects of Ultrasonic Vibration on Microstructure of Nano-SiCp/A356 Composites

DOI： 10.15980/j.tzzz.2019.04.021

摘要

Abstract

关键词

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references

Effects of Ultrasonic Vibration on Microstructure of Nano-SiC_p/A356 Composites