Effect of ultrasonic vibration on the grain refinement and SiC particle distribution in Zn-based composite filler metal

被引：39

作者：

Xu, Zhiwu ^{[1
]}

Yan, Jiuchun ^{[1
]}

Chen, Wei ^{[1
]}

Yang, Shiqin ^{[1
]}

机构：

[1] Harbin Inst Technol, State Key Lab Adv Welding Prod Technol, Harbin 150001, Peoples R China

来源：

MATERIALS LETTERS | 2008年 / 62卷 / 17-18期

关键词：

composites materials; solidification; grain refining; particle distribution; ultrasonic vibration;

D O I：

10.1016/j.matlet.2007.12.065

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Refining the matrix microstructure of the composite is an effective method to avoid severe reinforcement particle pushing by the advancing solid-liquid interface during solidification. The effect of the ultrasonic vibration, which was injected into the melt at various stages of solidification, on the grain refinement and particle distribution in a Zn-based solidified composite filler metal was investigated. Perfect grain refinement was obtained with the application of continuous ultrasonic vibration. However, severe particle pushing by the sound radiation pressure was observed, resulting in serious particle segregation. Uniform distribution of SiC particles as well as grain refinement was obtained when proper intermittent ultrasonic treatment was applied. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：2615 / 2618

页数：4

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