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Al-Ni-Ce-La aluminum-based amorphous alloy and preparation method thereof

An amorphous alloy, aluminum-based technology, applied in the field of metal materials, can solve the problems of poor amorphous formation ability and difficulty of aluminum alloys, and achieve the effects of low cooling rate, improved densification, and simple composition and preparation method.

Inactive Publication Date: 2010-09-22
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the poor amorphous formation ability of aluminum alloys, it is still difficult to directly prepare bulk aluminum-based amorphous alloy materials by solidification of the melt.

Method used

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  • Al-Ni-Ce-La aluminum-based amorphous alloy and preparation method thereof
  • Al-Ni-Ce-La aluminum-based amorphous alloy and preparation method thereof
  • Al-Ni-Ce-La aluminum-based amorphous alloy and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Embodiment 1: preparation composition is Al 84 Ni 10 Ce 4 La 2 (x=2, at.%) amorphous alloy

[0039] Step 1: Ingredients

[0040] Select pure metal, according to the nominal composition Al 84 Ni 10 Ce 4 La 2 (x=2, at.%) batching. When batching, it should be mechanically polished to remove the pollution layer on the surface of pure metal raw materials, and then cleaned with a mixed solution of alcohol and acetone and air-dried.

[0041] Step 2: Preparation of master alloy

[0042] The alloy raw material prepared in the first step is smelted 3 to 6 times in a vacuum electric arc furnace, and electromagnetic stirring is performed at the same time to obtain a uniformly smelted master alloy ingot with a vacuum degree of 10 -3Pa; or use a vacuum induction melting furnace to melt the master alloy in an Ar protective atmosphere, and the vacuum degree is 10 -2 Pa;

[0043] The third step: throwing the tape to prepare the amorphous tape

[0044] After the surface of t...

Embodiment 2

[0046] Embodiment 2: preparation composition is Al 84 Ni 9 Ce 6 Amorphous alloy of La(y=1, at.%)

[0047] According to the nominal composition Al 83 Ni 10 Ce 6 La (y=1, at.%) batching, then prepare according to the method and step of example 1 and obtain composition and be Al 84 Ni 9 Ce 6 La amorphous ribbon with a thickness of 105 μm. The results of XRD phase analysis show that the strips prepared are amorphous structure; the results of DSC analysis show that the strips prepared by the present invention have obvious glass transition temperature Tg and wide supercooled liquid phase region ΔTx.

Embodiment 3

[0048] Embodiment 3: preparation composition is Al 83 Ni 10 Ce 6 Amorphous alloy of La(z=1, at.%)

[0049] According to the nominal composition Al 83 Ni 10 Ce 6 La (z=1, at.%) batching, then prepare according to the method and step of example 1 and obtain composition and be Al 83 Ni 10 Ce 6 La amorphous ribbon with a thickness of 100 μm. The XRD phase analysis result shows that the strip material prepared is an amorphous structure; the DSC analysis result shows that the strip material prepared by the present invention has an obvious glass transition temperature T g and a wide subcooled liquid phase region ΔT x .

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Abstract

The invention relates to an Al-Ni-Ce-La aluminum-based amorphous alloy which comprises the following components: Al84Ni10Ce(6-x)Lax(x=1 to 6, at.%), Al84Ni(10-y)Ce6Lay(y=1 to 3, at.%) and Al(84-z)Ni10Ce6Laz(z=1 to 3, at.%). A method for preparing the Al-Ni-Ce-La aluminum-based amorphous alloy comprises the following steps that: after preparing materials according to the nominal components of the alloy, under the protection of argon gas, a master alloy is prepared by vacuum arc melting or vacuum induction melting; and under the protection of Ar gas, an amorphous strip is prepared by spinning, the minimum linear speed of a copper roller when in spinning is 10m / s, the melt injection pressure is 0.07 to 0.08MPa, and the vacuum degree is 2 to 10-1Pa. The invention has the advantages of reasonable component ratio, strong amorphous forming capability, simple manufacturing method and low requirement on the vacuum degree.

Description

technical field [0001] The invention discloses an Al-Ni-Ce-La quaternary aluminum-based amorphous alloy with strong amorphous forming ability and a preparation method thereof, belonging to the field of metal materials. Background technique [0002] Because of its high strength, high plasticity, low density, good elasticity and toughness, corrosion resistance and wear resistance, aluminum-based amorphous alloys have broad application prospects in aerospace, light transportation, petroleum, chemical and other fields. 1988 He [Y.He, S.J. Poon, G.J.Shiflet. Science 241 (1988) 1640-1642]; Inoue [A. Inoue, K. Ohtera, A.-P. Tsai, T. Masumoto. Jpn J Appl Phys 27 (1988) L280-L282; L479-L482; L736-L739] have received extensive attention since the rapid solidification method was used to prepare aluminum-based amorphous alloys. However, compared with other alloy systems (such as zirconium-based, palladium-based, iron-based, lanthanum-based, etc.), aluminum alloys have poor amorphous fo...

Claims

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Application Information

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IPC IPC(8): C22C45/08
Inventor 刘祖铭张刘杰黄伯云刘咏朱艺添吴宏杜勇
Owner CENT SOUTH UNIV
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