Tunable Mechanical Properties of Ti-Zr-Ni-Cr Amorphous Ribbons via Vanadium Addition

Abstract

In this paper, the effects of vanadium addition on the mechanical properties of Ti-Zr-Ni-Cr amorphous ribbons with high spinning speed were studied. It was found that the mechanical properties of samples were obvious promoted by adding vanadium into Ti-Zr-Ni-Cr amorphous alloys. The rapidly solidified Ti-Zr-Ni-Cr (V = 0, V = 0.1) ribbons at a speed of 45 m/s is an amorphous structure. But the amorphous structure of Ti-Zr-Ni-Cr-V alloys is even more uniform than that of the V-free alloys samples. In particular, Ti-Zr-Ni-Cr-V amorphous ribbons showed better mechanical properties that the tensile strength (\(\sigma_{b}\)) of the amorphous ribbons samples that had been significantly increased from 542 MPa for V = 0–675 MPa for V = 0.1. The elongation (δ) exhibited a tiny increase from 1.1% for V = 0–1.29% for V = 0.1. The fractured surface of amorphous ribbons for V = 0 showed more cleavage features, it was the obviously brittle fracture. The fracture surface for amorphous ribbons for V = 0 were more vein-like patterns, they are attributed to a local change of viscosity. It’s likely that adding V into Ti-Zr-Ni-Cr amorphous alloys is beneficial to enhance rheological units and massive accumulation of free volume in ribbons. It contributes to mechanical properties, especially for the tensile strength and the plastic deformation of the amorphous ribbons.