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Ti base bulk amorphous alloy and method for producing the same

A technology of amorphous alloy and production method, which is applied in the field of Ti-based bulk amorphous alloy, can solve the problems of increasing alloy density and losing low alloy density, and achieves high specific strength, high amorphous forming ability, and high thermal stability. Effect

Active Publication Date: 2011-01-19
UNIV OF SCI & TECH BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the addition of late transition group elements Ni, Cu and Sn increases the density of the alloy and loses the advantage of low density of the alloy

Method used

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  • Ti base bulk amorphous alloy and method for producing the same
  • Ti base bulk amorphous alloy and method for producing the same
  • Ti base bulk amorphous alloy and method for producing the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] High-purity (purity greater than 99%) 36% Ti, 28% Be, 36% Zr (atomic percentage, the same below) elements are repeatedly smelted in an electric arc furnace purified by Ti for more than 3 times to make the alloy composition uniform and obtain a nominal The composition is Ti 36 be 28 Zr 36 Then put 5-10 grams of alloy ingot into the suction casting crucible and use a mechanical pump to suck the remelted alloy into the copper mold to obtain a round rod with a diameter of 3-5 mm. The sample was analyzed by X-ray diffraction as an amorphous phase, such as figure 1 shown. The glass transition temperature T of this amorphous alloy was obtained by thermal analysis g , crystallization onset temperature T x , and the supercooled liquidus temperature interval ΔT x . The DSC curve of the amorphous alloy is shown in figure 2 , showing a clear glass transition and crystallization process, its T g ,T x , ΔT x They are 320°C, 425°C, and 105°C, respectively. The thermophysi...

Embodiment 2

[0021] High-purity (purity greater than 99%) 50% Ti, 34% Be, 16% Zr elements are repeatedly smelted for more than 3 times in a Ti-purified electric arc furnace to make the alloy composition uniform, and the nominal composition is Ti 50 be 34 Zr 16 Then put 5-10 grams of alloy ingot into the suction casting crucible and use a mechanical pump to suck the remelted alloy into the copper mold to obtain a round rod with a diameter of 3-5 mm. The sample was analyzed by X-ray diffraction as an amorphous phase, such as figure 1 shown. The glass transition temperature T of this amorphous alloy was obtained by thermal analysis g , crystallization onset temperature T x , and the supercooled liquidus temperature interval ΔT x . The DSC curve of the amorphous alloy is shown in figure 2 , showing a clear glass transition and crystallization process, its T g ,T x , ΔT x They are 330°C, 365°C, and 35°C respectively. The thermophysical parameters of the bulk amorphous alloy are list...

Embodiment 3

[0023] The high-purity (purity greater than 99%) 41% Ti, 34% Be, 25% Zr elements are repeatedly smelted in an electric arc furnace purified by Ti for more than 3 times to make the alloy composition uniform, and the nominal composition is Ti 41 be 34 Zr 25 Then put 5-10 grams of alloy ingot into the suction casting crucible and use a mechanical pump to suck the remelted alloy into the copper mold to obtain a round rod with a diameter of 3-5 mm. The sample was analyzed by X-ray diffraction as an amorphous phase, such as figure 1 shown. The glass transition temperature T of this amorphous alloy was obtained by thermal analysis g , crystallization onset temperature T x , and the supercooled liquidus temperature interval ΔT x . The DSC curve of the amorphous alloy is shown in figure 2 , showing a clear glass transition and crystallization process, its T g ,T x , ΔT x They are 316°C, 354°C, and 38°C, respectively. The thermophysical parameters of the bulk amorphous alloy...

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Abstract

The invention discloses a bulk ti-based amorphous alloy and a production method thereof, the chemical compositions consist of TixZryBezVu (atom percentage), wherein, x is more than or equal to 36 and is less than or equal to 50, y is more than or equal to 28 and is less than or equal to 34, z is more than or equal to 16 and is less than or equal to 36, u is more than or equal to 0 and is less than or equal to 6, and x+y+z+u is equal to 100. The production method is as follows: firstly, master alloy is smelted in a vacuum arc furnace, and then melted in an arc furnace which has a rapid solidification device. After being melted, the alloy is absorbed and casted in a copper mold and formed into amorphous alloy rods, wherein, the amorphous content is 50 percent to 100 percent. The bulk ti-based amorphous alloy has extremely high strength and excellent corrosion resistance, and bulk ti-based amorphous glass has relatively high transition temperature, and can be used as a novel material with high temperature and corrosion resistance. The invention has the advantages of discarding the post transition family elements of amorphous Ti-based alloy such as Ni, Cu, Sn and the like, thereby resulting in the lower density and higher specific strength of Ti-based amorphous alloy.

Description

technical field [0001] The invention relates to a Ti-based bulk amorphous alloy with low density, high specific strength and high corrosion resistance, which is suitable for aerospace structural materials and biomedical devices, and a production method thereof. Background technique [0002] Amorphous alloys have a structure of long-range disorder and short-range order, so compared with crystalline alloys, they have many unique properties, such as high hardness, high strength, high resistance, corrosion resistance and wear resistance, etc. The development of high-performance functional and structural materials offers great potential, so the preparation of amorphous alloys and the development of bulk amorphous materials have attracted more and more attention from the materials community. For more than 40 years, with the development and progress of technology, a series of alloy systems with high glass forming ability have been developed, such as Fe, Co, Zr, Ni, Mg, Pd, Ti, Cu, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C45/10C22C45/00C22C1/03
Inventor 林均品郝国建张勇王艳丽林志叶丰陈国良
Owner UNIV OF SCI & TECH BEIJING