金属玻璃的热塑性成型

发布时间：2018-06-03 04:38

本文选题：金属玻璃 + 过冷液相区　；参考：《物理学报》2017年17期

【摘要】：金属玻璃在其过冷液相区内表现出随着温度升高黏度逐渐降低的特性,因此可以对其进行热塑性加工.该性质颠覆了传统金属的加工成型方式,使得其在远低于传统金属材料加工的温度和应力作用下可以按照人们的要求进行成型.因此,一些具有低玻璃转变温度的金属玻璃又被称作金属塑料.另外,由于金属玻璃是一种无序结构材料,不存在位错、晶界等晶体缺陷,且热膨胀系数小,在热塑性成型中具有优异的尺寸精度,因此被认为是理想的微成型材料,有广阔的应用前景.本文系统介绍了金属玻璃的热塑性成型性质及其应用,从热塑性成型的基本概念出发,阐述了金属玻璃热塑性成型能力的评估指标、热塑性成型技术、热塑性微成型及其理论、热塑性微成型的应用等,对认识金属玻璃的热塑性及扩展其应用有重要的意义.
[Abstract]:Metallic glass has the characteristic of decreasing viscosity with increasing temperature in the supercooled liquid region, so it can be thermoplastic machined. This property subverts the traditional metal forming method, which can be formed according to the requirements of people under the action of temperature and stress. Therefore, some metal glass with low glass transition temperature is also called metal plastic. In addition, because metallic glass is a kind of disordered structure material, there are no dislocation, grain boundary and other crystal defects, and the coefficient of thermal expansion is small, so it has excellent dimensional accuracy in thermoplastic forming, so it is considered to be an ideal microforming material. It has broad application prospect. In this paper, the properties and applications of thermoplastic forming of metallic glass are introduced systematically. Based on the basic concept of thermoplastic forming, the evaluation index of thermoplastic forming ability, thermoplastic forming technology, thermoplastic micro-forming and its theory are expounded. The application of thermoplastic microforming is of great significance in understanding the thermoplasticity of metallic glass and expanding its application.
【作者单位】：深圳大学机电与控制工程学院广东省微纳光机电工程技术重点实验室;
【基金】：国家自然科学基金(批准号:51501116,51605304,51575360) 广东省自然科学基金博士启动项目(批准号:2016A030310036,2016A030310043) 中国博士后科学基金(批准号:2016M601423) 深圳大学青年教师科研启动项目(批准号:2017034)资助的课题~~
【分类号】：TG139.8

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