Surface Modification of the Bulk Metallic Glass Zr$_{46}$Cu$_{36.8}$Ag$_{9.2}$Al$_8$ Triggered by Millisecond Laser Irradiation

Alexandra A. Shlykova; Mikhail F. Gasanov; Alexandr Nasedkin; Viktor A. Fedorov

doi:10.20944/preprints201810.0177.v1

Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Version 1 : Received: 8 October 2018 / Approved: 9 October 2018 / Online: 9 October 2018 (06:13:47 CEST)

Zirconium based bulk metallic glasses are industrially valuable materials which commercial market grows rapidly. Surface modification of these metallic glasses by high-intensity lasers is relatively new and costly treatment promising great advantages over classical surface processing methods. In this work we perform the case study of surface modification of Zr$_{46}$Cu$_{36.8}$Ag$_{9.2}$Al$_8$ metallic glass by high-intensity millisecond laser beam. Our results suggest chemical deposition of atmospheric oxygen and nitrogen in the laser-melted surface area and its surroundings. Zirconium nitride layer was detected in the middle of laser-irradiated area. Nanocrystals embedded in the amorphous matrix were also formed on the surface. Overall, our findings suggest possibilities for improvement of mechanical characteristics of the studied metallic glass.

Zirconium; bulk metallic glass; laser material processing; amorphous; nanocrystals; surface modification; glass transition

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Surface Modification of the Bulk Metallic Glass Zr$_{46}$Cu$_{36.8}$Ag$_{9.2}$Al$_8$ Triggered by Millisecond Laser Irradiation

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