Transactions of Materials and Heat Treatment

Title：Influence of ultrasonic energy flow density on the plastic properties of zirconium-based amorphous alloy at room temperature

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ClassificationCode：TG139.8

year,vol(issue):pagenumber：2019,44(4):162-170

Abstract：

Micro-compression pre-treatment of Zr-based amorphous alloy was conducted by ultrasonic-assisted vibration with the frequency of 20 kHz and the amplitudes of 0, 19, 27, 36 and 43 μm, respectively. Then, the quasi-static compression fracture test was carried out, and the fractures were observed by high-resolution scanning electron microscopy. Next, the process was simulated by ABAQUS, and the influence of ultrasonic energy flow density on the plastic properties of Zr-based amorphous alloy at room temperature was studied. The results show that the shear deformation occurs in the deformed zone of Zr-based amorphous alloy, and the ductile fracture plays a major role. With the increasing of ultrasonic amplitude and frequency, the elastic modulus decreases, the equivalent stress distribution is more uniform, the strain increases, the plastic deformation is better and the formability increases. However, it is found that the formability of amorphous alloy decreases with the increasing of ultrasonic energy flow density when the energy flow density is above 9.41×108 W·m-2 approximately.

Funds：

国家自然科学基金资助项目（51675347）；广东省自然科学基金资助项目（2016A030313058）；深圳市科技项目（JCYJ20160308091758179）

刘芳平（1996-），男，硕士研究生 E-mail：2170295804@email.szu.edu.cn 通讯作者：娄燕（1971-），女，博士，教授 E-mail：susanlou121@163.com

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