Ultrasonic Vibration Facilitates the Micro-Formability of a Zr-Based Metallic Glass

Guangchao Han; Zhuo Peng; Linhong Xu; Ning Li

doi:10.3390/ma11122568

Ultrasonic Vibration Facilitates the Micro-Formability of a Zr-Based Metallic Glass

Materials (Basel). 2018 Dec 17;11(12):2568. doi: 10.3390/ma11122568.

Authors

Guangchao Han^{1

2}, Zhuo Peng³, Linhong Xu⁴, Ning Li^{5

6}

Affiliations

¹ School of Mechanical Engineering and Electronic Information, China University of Geosiences, Wuhan 430074, China. hgc009@cug.edu.cn.
² Shanxi Key Laboratory of Non-Traditional Machining, Xi'an Technological University, Xi'an 710032, China. hgc009@cug.edu.cn.
³ School of Mechanical Engineering and Electronic Information, China University of Geosiences, Wuhan 430074, China. 13237140699@163.com.
⁴ School of Mechanical Engineering and Electronic Information, China University of Geosiences, Wuhan 430074, China. xulinhong@cug.edu.cn.
⁵ State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Harbin 150001, China. hslining@mail.hust.edu.cn.
⁶ State Key Laboratory of Materials Processing and Die & Mold Technology, Huazhong University of Science and Technology, Wuhan 430074, China. hslining@mail.hust.edu.cn.

Abstract

Thermoplastic microforming not only breaks through the bottleneck in the manufacture of metallic glasses, but also offers alluring prospects in microengineering applications. The microformability of metallic glasses decreases with a reduction in the mold size owing to the interfacial size effect, which seriously hinders their large-scale applications. Here, ultrasonic vibration was introduced as an effective method to improve the microformability of metallic glasses, owing to its capabilities of improving the material flow and reducing the interfacial friction. The results reveal that the microformability of supercooled Zr₃₅Ti₃₀Cu_8.25Be_26.75 metallic glasses is conspicuously enhanced by comparison with those under quasi-static loading. The more intriguing finding is that the microformability of the Zr-based metallic glasses can be further improved by tuning the amplitude of the ultrasonic vibration. The physical origin of the above scenario is understood, in depth, on the basis of ultrasonic vibration-assisted material flow, as demonstrated by the finite element method.

Keywords: formability; metallic glasses; thermoplastic microforming; ultrasonic vibration.