AUTHOR=Liang Xiong , Fan Caitao , Fu Jianan , Liu Zehang , Zhang Zhenxuan , Ren Shuai , Ruan Wenqing , Shi Hongyan TITLE=Improve the Forming Ability of Al-Based Metallic Glass Under Ultrasonic Vibration at Room Temperature JOURNAL=Frontiers in Materials VOLUME=8 YEAR=2021 URL=https://www.frontiersin.org/journals/materials/articles/10.3389/fmats.2021.746955 DOI=10.3389/fmats.2021.746955 ISSN=2296-8016 ABSTRACT=

In this work, a rapid and controllable ultrasonic vibration method for forming Al-based metallic glass at room temperature is proposed. This method can dramatically improve the forming ability of Al-based metallic glasses, which are virtually brittle at room temperature and have almost no supercooled liquid region at high temperatures. Under ultrasonic vibration, Al-based metallic glasses exhibited obvious plastic flow, with a maximum deformation degree up to 58% and an average deformation degree up to 43%. It is worth mentioning that no crystalline peaks were found on the X-ray diffraction patterns after deformation under ultrasonic vibration, and the mechanical properties remained the same as the primary sample. The present results provide a new approach for the deformation and forming of Al-based metallic glasses, which can significantly broaden their applications.