Plasticity enhancement massive metal glass material and preparation method thereof

Abstract

The invention relates to a bulk metallic glass material with improved plasticity which is a metallic glass alloy cylindrical material covered by a metal pipe. The inner diameter of the metal pipe is between 3 and 10 mm, the thickness is between 0.5 and 2mm, the length is between 3 and 10 cm; the covered metallic glass alloy is alloy systems such as zirconium-based, copper-based, iron-based, rare-earth-based and so on, which amorphous formation abilities are more than 3 mm; the metal pipe can be various metal pipes with good plasticity. A preparation method for the bulk metallic glass material with improved plasticity provided by the invention is that: the single element metal with the purity not lower than 99.9 percent is prepared according to the atomic formula of the amorphous alloy, then is melted and cooled to obtain the mother alloy ingot; the mother alloy ingot is melted, then is made a suction casting into the metal pipe which is treated and is clamped in a water-cooled copper mold, and finally is cooled. The invention improves the amorphous plasticity, also has no influence on the forming ability of the bulk metallic glass, and is applicable to all the bulk m etallic glass systems.

Description

Technical field [0001] The invention belongs to the field of condensed matter physics and material science, and specifically relates to a plastically enhanced bulk metallic glass material and a preparation method thereof. Background technique [0002] Bulk amorphous alloys (ie bulk metallic glass) of various alloy systems have been prepared from Inoue, Johnson, etc., such as Mg-Y-Ni-Cu, Pd-Ni-Cu-P, Zr-Ti-Cu-Ni Since Be, large metal glass materials have attracted great attention due to their unique properties (super high strength ~ 2-5 GPa, high elasticity ~ 2%, excellent corrosion resistance, etc.). Zr 41.2 Ti 13.8 Cu 12.5 Ni 10 Be 22.5 (Vit1) As one of the alloy systems with the strongest glass-forming ability, it can form bulk materials with a diameter of more than ten centimeters. The amorphous-forming ability is close to the traditional oxide glass, and its strength can reach more than 2000MPa, plus its high The characteristics of elasticity and high hardness have broad appli...

AI Technical Summary

Problems solved by technology

However, this method is often difficult to control the percentage of the second phase, and cannot repeatedly prepare composite materials with consistent properties.

[0006] In short, since the preparation of composite materials is a complex process that requires many additional conditions (doping method, preparation environment, etc.), the equipment related to material preparation also needs to be improved, which increases the difficulty of preparing composite materials.

Images