Journal
SCRIPTA MATERIALIA
Volume 185, Issue -, Pages 100-104Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.scriptamat.2020.03.059
Keywords
Bulk metallic glass; Ultrasonic welding; Hardness; XRD; Computed tomography
Categories
Funding
- Key Basic and Applied Research Program of Guangdong Province, China [2019B030302010]
- National Key Research and Development Program of China [2018YFA0703605]
- National Science Foundation of China [51871157, 51971150]
- Science and Technology Innovation Commission Shenzhen [JCYJ20170412111216258]
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Breakthrough of glass forming ability limitation has been a longstanding pursuit in metallic glasses. In present work, an ultrasonic welding technology was used to achieve this goal. The La55Al25Ni5Cu10Co5 rods were bonded together. Results of computed tomography and scanning electron microscope show that the weld seam tends to narrow gradually and disappear with the increase of welding energy. X-ray diffraction indicated that it preserves completely amorphous structure. In addition, the hardness of the weld position increased with the increase of energy, showing the interfaces bonded together. (C) 2020 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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