Research on Taylor impact fracture behavior of ZrCuAlNiNb amorphous alloy

Abstract

Under argon conditions, the Taylor impact test for ZrCuAlNiNb amorphous alloy with impact velocity range of 78.9-155 m/s was carried out, the failure fracture process of the material was recorded by high-resolution high-speed photography, and the fractured samples after fracture were recovered. The microscopic morphology of the section was observed by scanning electroscope, and the fracture behavior of the material at different impact speeds was analyzed. ZrCuAlNiNb amorphous alloy breaks from a single main shear band under low-speed impact to a multi-shear band break at high speed (≥ 150 m/s), and several secondary shear straps are formed along the axial direction of the sample. Its complex force leads to a variety of fractured forms, and dynamic temperature rise aggravates the thermal softening effect of the material. ZrCuAlNi crystal alloy is transmitted by axial cracks, which cause the crystal alloy to fracture under the interaction of multiple cracks, and the fractured morphology presents a river-like cleavage fracture. The study of the mechanical properties of ZrCuAlNiNb amorphous alloys and their failure behavior provide theoretical guidance and experimental basis for the application of ZrCuAlNiNb amorphous alloys.

Keywords

• impact dynamics
• zrcualninb amorphous alloy
• taylor impact
• fracture morphology