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Zirconium-based amorphous alloy and preparation method thereof

A technology of zirconium-based amorphous alloy and amorphous alloy, applied in the field of amorphous alloy and its preparation, can solve the problems of small critical size and high density of zirconium-based amorphous alloy, and achieve the effect of large critical size

Active Publication Date: 2015-04-29
BYD CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In order to solve the technical problems of the existing zirconium-based amorphous alloys with high density and small critical size, the present invention provides a zirconium-based amorphous alloy with light density and large critical size and its preparation method

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  • Zirconium-based amorphous alloy and preparation method thereof

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[0019] The present invention also provides a method for preparing a zirconium-based amorphous alloy, the method comprising:

[0020] 1) Preparation of master alloy ingot: Under protective gas atmosphere, the amorphous alloy raw material is melted in a vacuum melting furnace, and then cooled and formed;

[0021] 2) Forming method: re-melting the master alloy ingot obtained in step 1), pouring the alloy solution into a forming mold by gravity casting, suction casting, spray casting or die casting to obtain an amorphous alloy;

[0022] Wherein, the addition amount of described amorphous alloy raw material including Zr, Ti, Be, M and R satisfies general formula Zr a Ti b be c m d R e The proportion of each component expressed, where a, b, c, d, e are atomic percentages; 25≤a≤35, 30≤b≤40, 10≤c≤25, 10≤d≤20, 0<e< 2, and a+b+c+d+e=100; the M is one or more of Co, Cu, Cr, Hf and Nb; the R is Pr, Nd, Sm, Gd, Tb, One or more of Dy and Y.

[0023] According to the method for prepar...

Embodiment 1

[0029] According to Zr 30 Ti 32 be 22 co 6 Cu 9 Pr is used for alloy proportioning, metal zirconium adopts industrial grade HZr-1 sponge zirconium, titanium adopts industrial grade sponge titanium with a purity greater than 99%, beryllium adopts industrial beryllium ingots with a purity of 99%, cobalt adopts cobalt ingots with a purity greater than 99%, and copper 1# waste copper is used, the purity is about 97%, and praseodymium metal with a purity of 99% is used for praseodymium.

[0030] After the alloy ratio is completed, it is put into a vacuum melting furnace, vacuumed to 10Pa, and filled with 99.99% argon for atmosphere protection, and then alloyed and smelted. The smelting temperature is 1200°C, and the smelting time is 15Min. The body was cast into a copper mold to obtain amorphous alloy A1 with a diameter ranging from 5 mm to 30 mm.

Embodiment 2

[0032] According to Zr 25 Ti 35 be 25 Cr5 Cu 9 Nd is used for alloy proportioning, industrial-grade HZr-1 zirconium sponge is used for metal zirconium, industrial-grade sponge titanium with a purity greater than 99% is used for titanium, industrial beryllium ingot with a purity of 99% is used for beryllium, chromium ingot with a purity greater than 99% is used for chromium, and chromium ingot with a purity greater than 99% is used for chromium. 1# waste copper is used, the purity is about 97%, and the neodymium is made of neodymium metal with a purity of 99%.

[0033] After the alloy ratio is completed, it is put into a vacuum melting furnace, vacuumed to 10Pa, and filled with 99.99% argon for atmosphere protection, and then alloyed and smelted. The smelting temperature is 1200°C, and the smelting time is 15Min. The body was cast into a copper mold to obtain amorphous alloy A2 with a diameter ranging from 5 mm to 30 mm.

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Abstract

The invention provides a zirconium-based amorphous alloy which is characterized in that the composition of the zirconium-based amorphous alloy is ZraTibBecMdRe in which a, b, c, d and e are atomic percentages; a is greater than or equal to 25 and less than or equal to 35, b is greater than or equal to 30 and less than or equal to 40, c is greater than or equal to 10 and less than or equal to 25, d is greater than or equal to 10 and less than or equal to 20 and e is greater than 0 and less than 2; a+b+c+d+e is equal to 100; M is one or more of Co, Cu, Cr, Hf and Nb; R is one or more of Pr, Nd, Sm, Gd, Tb, Dy and Y. The zirconium-based amorphous alloy provided by the invention can be used for preparing a large critical dimension low-density zirconium-based amorphous alloy structural material by using industrial raw materials. The component is convenient to produce and control and easy for industrial production.

Description

technical field [0001] The invention relates to an amorphous alloy and a preparation method thereof, in particular to a zirconium-based amorphous alloy and a preparation method thereof. Background technique [0002] Amorphous alloys appeared in the 1960s. The commonly used amorphous alloy systems are: Zr-based, Ti-based, Cu-based, Fe-based, Pd-based, Pt-based, Mg-based, Co-based, Ca-based and rare earth-based. Y group, La group, Pr group, Nd group, etc. The initial amorphous alloys are difficult to be practically applied because the critical size (the largest size for forming amorphous crystals) can only reach the micron level. Because of its unique microstructure - long-range disorder and short-range order, bulk amorphous alloys have mechanical properties unmatched by crystalline alloys, such as strength, high hardness, good elasticity, corrosion resistance, and wear resistance. , Aerospace, IT electronics, machinery, chemical industry and other industries have broad app...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C45/10C22C1/03
Inventor 张法亮
Owner BYD CO LTD