Zirconium-based amorphous alloy and preparation method thereof

Abstract

The invention discloses a zirconium-based amorphous alloy. Components of the zirconium-based amorphous alloy conform to the chemical formula ZraCubNicNbdAleYf, wherein 72<=a<=80, 3<=b<=8, 6<=c<=12, 4<=d<=10, 2<=e<=10, 3<=f<=0.7, and a+b+c+d+e=100. According to the zirconium-based amorphous alloy, the maximum forming size is lager than 30 mm, the glass transformation temperature ranges from 440 DEGC to 450 DEG C, and the initial smelting temperature ranges from 800 DEG C to 850 DEG C. The zirconium-based amorphous alloy low in oxygen and hydrogen content, high in amorphous glass forming capacity, excellent in after-forming mechanical performance and good in corrosion resistance is provided. Meanwhile, a preparation method of the zirconium-based amorphous alloy is provided.

Description

technical field [0001] The invention belongs to the field of new metal materials, and in particular relates to a zirconium-based amorphous alloy and a preparation method thereof. Background technique [0002] As a metal material with new microstructure and functions, amorphous alloy not only has extremely high strength, toughness, wear resistance and corrosion resistance, but also exhibits excellent soft magnetic properties, superconducting properties and low magnetic loss And other characteristics, so it has been widely used in electronics, machinery, chemical industry and other industries, and its application scope has been continuously expanded with the deepening of theoretical research. Zirconium-based amorphous alloys, as a new type of amorphous alloy series, have attracted widespread attention in the field of metal materials in recent years. Multicomponent zirconium-based amorphous alloys usually have a lower critical cooling temperature, and can be made into bulk amo...

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Problems solved by technology

[0004] 1. In order to reduce the cost in the process of using rare earth element R for chemical oxygen and nitrogen removal, the remaining amount of element R is strictly stipulated at 0-0.3%, and its burning loss rate should be controlled within 50% (burning loss of R element in 201210592488.2 The amount is 5-100% atomic percentage. In the actual manufacturing process, the excessive burning loss not only increases the cost, but also fails to achieve the purpose of removing oxygen and nitrogen). Under the condition of this addition amount, it is controlled by a suitable smelting process And a variety of rare earth options can also obtain zirconium-based amorphous alloys with greater forming ability and better physical properties, but in this case the oxygen content control level is not good. During the reciprocating use, with the oxygen nitrogen As the content increases, the performance parameters of the finished zirconium-based amorphous alloy ingot will have a very large drop

[0005] 2. Due to the limitation of composition and the influence of oxygen and nitrogen content in the preparation process, the corrosion resistance of zirconium-based amorphous alloys in the prior art is average, and it is difficult to pass the limit test in the conventional salt spray test, which makes it unable to be used in the field of outdoor tools. For example, it is used in the field of metal materials that require very high anti-corrosion performance in the automotive industry

Both of the above two schemes propose different solutions to improve the glass-forming ability of amorphous alloys, but how to improve the corrosion resistance of zirconium-based amorphous alloys and the changes in mechanical properties after improving the corrosion resistance are temporarily discussed. There is no effective solution yet

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