Conchoidal Fracture of Zr- and Mg-Based Amorphous Glass

Abstract:

In metallic glasses plastic deformation occurs via the creation and the propagation of a softened region in the shear bands. Some of the high strength metallic glasses (as Zr-based metallic alloys) exhibit complex shear band topography and the final failure respects the allocation of the shear bands. We studied the differences in the fracture surfaces of Zr-and Mg-based amorphous alloys. Ductile behaviour of the shear bands in Zr-based amorphous alloy tends to the dimple creation during the failure. On the fracture surfaces the vein pattern morphology manifestations were present. Conchoidal fracture was typical for Mg-based amorphous glass. Two different surface morphologies, plumes and rib marks ornament the fracture surfaces.

• Periodical: Materials Science Forum (Volume 891)
• Pages: 504-508
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.891.504
• Online since: March 2017
• Authors: Jozef Miškuf*, Kornel Csach, Alena Juríková, Maria Hurakova, Martin Miškuf, Elena D. Tabachnikova
• Keywords: Amorphous Alloy, Bulk, Fracture, Nanostructure

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