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Ultrasonic Welding of Fe78Si9B13 Metallic Glass

放大字体  缩小字体 发布日期:2014-11-12  来源:2014高层论坛论文集  作者:Zhengqiang Zhu  浏览次数:462
 Ultrasonic Welding of Fe78Si9B13 metallic Glass
Xiaocun Song, Zhengqiang Zhu*, Yanfei Chen
School of Mechanical Engineering, Nanchang University, Nanchang, 330031, China
*Corresponding author, email: zhuzhq01@126.com

Abstract. The solid bonds of multi-layer Fe78Si9B13 metallic glass foils have successfully been produced by ultrasonic welding technology. The interface of weld joints was investigated by Optical micrograph (OM), scanning electron microscope (SEM) observation, micro-area X-ray diffraction (micro-XRD) and differential scanning calorimetry (DSC) analysis. The results demonstrate that no visible interface and defects were observed and the amorphous structure was maintained. The thermal properties of the joined metallic glasses were the same as that of the parent metallic glass. The formation of joining metallic glasses was attributed to the superplastic flow and the thermal stability at elevated temperatures in the supercooled liquid state. Ultrasonic welding as tack welding proposes an effective method for the preparation of bulk metallic glasses (BMGs) and lays the foundation for its future applications.

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