超短脉冲激光加工金属玻璃研究进展

Research Progress on Ultrashort Pulsed Laser Processing of Metallic Glasses

金属玻璃是在熔融状态下急速冷却降温形成的新型合金,它具有优异的物理、化学性能,在航空、化工、军工等领域具有巨大的应用潜力。金属玻璃的制备工艺已经十分成熟,不同基底以及大尺寸块状金属玻璃的制备已经实现,但其高质高效的加工还面临许多问题。高温、高应变条件下,传统的加工方式容易使金属玻璃发生晶化和氧化,导致材料失去优异性能,使金属玻璃的应用受阻。近年来,随着超快激光器件的成熟,超快激光加工以其热效应小、加工精度高、不容易发生晶化和氧化等特点,为金属玻璃高质高效、低损耗加工提供了可能。同时针对超短脉冲激光与金属玻璃相互作用的机理也有了更加深入的研究。本文主要介绍金属玻璃的特殊性能、超短脉冲激光加工金属玻璃的机理及研究现状,并对超短脉冲激光加工金属玻璃存在的相关问题进行了总结和展望。

Metallic glass is a new type of alloy formed via rapid cooling and temperature reduction in the molten state. Owing to its excellent physical and chemical properties, it shows great application potential in the fields of aviation, chemical, and military, among others. The manufacturing technology of metallic glass has advanced,realizing the fabrication of different substrates and large bulk metallic glasses. However, the high-quality and efficient processing of metallic glass is challenged by many problems. Traditional processing methods may induce crystallization and oxidation under high temperature and strain, leading to the loss of the excellent properties of the material and hindering its wide application. With the recent advancement of ultrashort pulsed laser devices,ultrashort pulsed laser processing facilitates the high-quality, high-efficiency, and low-loss processing of metallic glass owing to its small thermal effect, high processing accuracy, and low crystallization and oxidation.Furthermore, the interaction mechanism between the ultrashort pulsed laser and metallic glass has been studied.This article mainly introduces the special properties of metallic glass and the interaction mechanism of the ultrashort pulsed laser processing of metallic glass, discusses research progress on the ultrashort pulsed laser processing of metallic glass, and summarizes the prospective problems of the ultrashort pulsed laser processing of metallic glass.