Journal
FRONTIERS IN MATERIALS
Volume 8, Issue -, Pages -Publisher
FRONTIERS MEDIA SA
DOI: 10.3389/fmats.2021.746955
Keywords
al-based metallic glass; ultrasonic vibration; Forming ability; room temperature deformation; transmission electron microscope
Categories
Funding
- Key Basic and Applied Research Program of Guangdong Province, China [2019B030302010]
- National Natural Science Foundation of China [51971150, 51871157, 52075344]
- Guangdong Basic and Applied Basic Research Foundation [2020B1515120092]
- Science and Technology Innovation Commission Shenzhen [JCYJ20170412111216258]
- National Key Research and Development Program of China [2018YFA0703604]
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A rapid and controllable ultrasonic vibration method for forming Al-based metallic glass at room temperature was proposed in this work, significantly improving their forming ability. Under ultrasonic vibration, Al-based metallic glasses exhibited obvious plastic flow, with no crystalline peaks found on X-ray diffraction patterns, and the mechanical properties remained unchanged.
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.
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