CN101838779A - Al-Ni-Ce-Zr aluminum-based amorphous alloy and preparation method thereof - Google Patents

Al-Ni-Ce-Zr aluminum-based amorphous alloy and preparation method thereof Download PDF

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Publication number
CN101838779A
CN101838779A CN 201010195874 CN201010195874A CN101838779A CN 101838779 A CN101838779 A CN 101838779A CN 201010195874 CN201010195874 CN 201010195874 CN 201010195874 A CN201010195874 A CN 201010195874A CN 101838779 A CN101838779 A CN 101838779A
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alloy
amorphous
preparation
aluminum
based amorphous
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刘祖铭
李晓峰
黄立清
刘咏
朱艺添
张刘杰
黄群
陈芝霖
李飞
杜勇
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Central South University
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Central South University
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Abstract

The invention relates to an Al-Ni-Ce-Zr aluminum-based amorphous alloy which comprises the following components: Al84Ni10Ce(6-x)Zrx(x=1 to 4, at.%), Al84Ni(10-y)Ce6Zry(y=1 to 6, at.%) or Al(84-z)Ni10Ce6Zrz(z=1 to 5, at.%). A method for preparing the alloy comprises the following steps that: after preparing materials according to the nominal components of the alloy, 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<-1>Pa. The invention has the advantages of reasonable component ratio, strong amorphous forming capability and high thermal stability, and simple manufacturing method.

Description

A kind of Al-Ni-Ce-Zr aluminum-based amorphous alloy and preparation method thereof
Technical field
The present invention the present invention relates to a kind of Al-Ni-Ce-Zr aluminum-based amorphous alloy and preparation method thereof, belongs to metal material field.
Background technology
Amorphous alloy is meant that the three-dimensional space of its atom is topological disorder when solid-state and arranges that promptly do not have long-range order (LRO), no crystal boundary does not have defectives such as stacking fault on the structure, and keeps the alloy of this metastable state at certain temperature range.The amorphous aluminum alloy has excellent mechanics, chemical property, compare with traditional aluminium alloy, its specific tenacity can improve 2-4 doubly, and the intensity of the nano combined al based amorphous alloy in partially-crystallized back can compare favourably with engineering ceramics, also showing excellent corrosion resistance nature etc. simultaneously, is a kind of new engineering material with wide application prospect.But aluminum base alloy is compared with other alloy systems, and its amorphous formation ability is limited, and directly synthesizing of block materials is also very difficult, and this makes al based amorphous alloy be difficult on the engineering and is applied.Therefore, development has the target that the novel aluminium based non-crystaline amorphous metal system of strong amorphous formation ability is numerous scientific research personnel's effort always.Chinese patent, CN03111967.0, a kind of al based amorphous alloy and preparation method thereof, disclose a kind of by the Al-Mg-Ce aluminum-based amorphous alloy, the preparation amorphous linear velocity be 30m/s～55m/s; Chinese patent, 200310118908.4, al based amorphous alloy and preparation method thereof discloses a kind of atomic percent and has consisted of Ni8～10%, Zr3～7%, Cu1～5%, Y1～3%, all the other are the aluminium-based amorphous alloy attitude alloy of Al, are 0.03～0.05MPa at melt jet pressure, minimum preparation linear velocity is under the condition of 23m/s, has prepared al based amorphous alloy.These achievements in research have been expanded the alloy system of aluminium-based amorphous alloy, to the great significance of aluminium-based amorphous alloy attitude alloy.But the amorphous formation ability of aluminium alloy is relatively poor, improves the formation ability and the thermostability of al based amorphous alloy, is the key issue that needs to be resolved hurrily.
Summary of the invention
The objective of the invention is to overcome the deficiency of existing alloy and a kind of reasonable mixture ratio of components is provided, has Al-Ni-Ce-Zr aluminum-based amorphous alloy of strong amorphous formation ability and high thermal stability and preparation method thereof.
A kind of Al-Ni-Ce-Zr aluminum-based amorphous alloy of the present invention, its composition is: Al 84Ni 10Ce (6-x)Zr x(x=1～4, at.%), Al 84Ni (10-y)Ce 6Zr y(y=1～6, at.%) or Al (84-z)Ni 10Ce 6Zr z(z=1～5, at.%).
The preparation method of a kind of Al-Ni-Ce-Zr aluminum-based amorphous alloy of the present invention comprises the steps:
The first step: batching
Select pure metal for use, according to nominal composition Al 84Ni 10Ce (6-x)Zr x(x=1～4, at.%), Al 84Ni (10-y)Ce 6Zr y(y=1～6, at.%) or Al (84-z)Ni 10Ce 6Zr z(z=1～5, at.%) batching;
Second step: preparation mother alloy
With alloy raw material vacuum arc furnace melting 3～6 times that the first step prepares, carry out induction stirring simultaneously, make the uniform mother alloy of melting; Or make mother alloy with vacuum induction melting furnace melting in the Ar protective atmosphere;
The 3rd step: get rid of band preparation amorphous
Through surface finish with after cleaning, place lower end ground-in silica tube to heat remelting the mother alloy of the second step preparation, treat that mother alloy melts fully after, the mother alloy melt jet is made amorphous ribbon to the copper roller rotating surface cool; Heating remelting and get rid of the band process and in Ar atmosphere, carry out, silica tube lower end and the surperficial 1mm～2mm apart of copper roller; Copper roller minimum line speed is 10m/s, and melt jet pressure is 0.07MPa～0.08MPa, and vacuum tightness is 2Pa～10 -1Pa.
The present invention has following advantage and positively effect:
(1) a kind of Al-Ni-Ce-Zr aluminum-based amorphous alloy of the present invention's proposition, the acting in conjunction of Ce and Zr has reduced the susceptibility of alloy to oxygen, has improved the amorphous formation ability of alloy;
(2) a kind of Al-Ni-Ce-Zr aluminum-based amorphous alloy of the present invention's proposition, composition and preparation method are simple, can adopt technical pure metal A l, Ni, Ce and Zr as raw material, and vacuum tightness requires low;
(3) a kind of Al-Ni-Ce-La alloy system of the present invention's proposition, amorphous formation ability is strong, and rate of cooling is low, and copper roller minimum rate of accumulation speed is under the condition of 10m/s, gets rid of band and prepares complete amorphous alloy.
In sum, reasonable mixture ratio of components of the present invention, have strong amorphous formation ability and high thermal stability, the preparation method is simple, and rate of cooling requires low.
Embodiment
It is raw material that the present invention adopts pure metal Al, Ni, Ce and Zr, prepares the Al-Ni-Ce-Zr series non-crystalline state alloy of multiple composition, and the present invention will be further described below in conjunction with example.
Embodiment 1:Al 84Ni 10Ce 5Zr 1(x=1, at.%) amorphous alloy
The first step: batching
Select pure metal for use, according to composition Al 84Ni 10Ce 5Zr 1(x=1, at.%) batching.Answer mechanical grinding to remove the pollution layer on pure metal raw material surface during batching, the back is cleaned with alcohol and acetone mixing solutions and is air-dry.
Second step: preparation mother alloy
With alloy raw material vacuum arc furnace melting 3～6 times that the first step prepares, carry out induction stirring simultaneously, make the uniform mother alloy of melting, vacuum tightness is 10 -3Pa; Or making mother alloy with vacuum induction melting furnace melting in the Ar protective atmosphere, vacuum tightness is 10 -2Pa;
The 3rd step: get rid of band preparation amorphous ribbon
Through surface finish with after cleaning, place lower end ground-in silica tube to heat remelting second mother alloy that goes on foot preparation, vacuum tightness is 2Pa～10 -1Pa, treat that mother alloy melts fully after, the mother alloy melt jet is made amorphous ribbon to the copper roller rotating surface cool; Heating remelting and get rid of the band process and in Ar atmosphere, carry out, silica tube lower end and the surperficial 1mm～2mm apart of copper roller; Copper roller linear velocity is 20m/s, and melt jet pressure is 0.07MPa～0.08MPa;
The 4th step: utilize X-ray diffractometer (XRD) to carry out material phase analysis, the result shows that prepared band is an amorphous structure.
Embodiment 2:Al 84Ni 10Ce 4Zr 2(x=2, at.%) amorphous alloy
According to composition Al 84Ni 10Ce 4Zr 2(preparing composition according to the method for example 1 and step then is Al for x=2, at.%) batching 84Ni 10Ce 5Zr 1Amorphous ribbon, getting rid of band copper roller linear velocity is 10m/s.XRD material phase analysis result shows that prepared band is an amorphous structure.
Embodiment 3:Al 84Ni 10Ce 2Zr 6(x=4, at.%) amorphous alloy
According to composition Al 84Ni 10Ce 2Zr 4(preparing composition according to the method for example 1 and step then is Al for x=4, at.%) batching 84Ni 10Zr 6Amorphous ribbon, getting rid of band copper roller linear velocity is 40m/s.XRD material phase analysis result shows that prepared band is an amorphous structure.
Embodiment 4:Al 84Ni 8Ce 6Zr 2(y=2, at.%) amorphous alloy
According to composition Al 84Ni 8Ce 6Zr 2(preparing composition according to the method for example 1 and step then is Al for y=2, at.%) batching 84Ni 8Ce 6Zr 2Amorphous ribbon, getting rid of band copper roller linear velocity is 20m/s.XRD material phase analysis result shows that prepared band is an amorphous structure.
Embodiment 5:Al 84Ni 4Ce 6Zr 6(y=6, at.%) amorphous alloy
According to composition Al 84Ni 4Ce 6Zr 6(preparing composition according to the method for example 1 and step then is Al for y=6, at.%) batching 84Ni 4Ce 6Zr 6Amorphous ribbon, getting rid of band copper roller linear velocity is 10m/s.XRD material phase analysis result shows that prepared band is an amorphous structure.
Embodiment 6:Al 83Ni 10Ce 6Zr 1(z=1, at.%) amorphous alloy
According to composition Al 83Ni 10Ce 6Zr 1(preparing composition according to the method for example 1 and step then is Al for z=1, at.%) batching 83Ni 10Ce 6Zr 1Amorphous ribbon, getting rid of band copper roller linear velocity is 20m/s.XRD material phase analysis result shows that prepared band is an amorphous structure.
Embodiment 7:Al 79Ni 10Ce 6Zr 5(z=5, at.%) amorphous alloy
According to composition Al 79Ni 10Ce 6Zr 5(preparing composition according to the method for example 1 and step then is Al for z=5, at.%) batching 79Ni 10Ce 6Zr 5Amorphous ribbon, getting rid of band copper roller linear velocity is 20m/s.XRD material phase analysis result shows that prepared band is an amorphous structure.

Claims (3)

1. an Al-Ni-Ce-Zr aluminum-based amorphous alloy is pressed atomic percent, and its composition is: Al 84Ni 10Ce (6-x)Zr x(x=1～4, at.%), Al 84Ni (10-y)Ce 6Zr y(y=1～6, at.%) or Al (84-z)Ni 10Ce 6Zr z(z=1～5, at.%).
2. prepare the method for Al-Ni-Ce-Zr aluminum-based amorphous alloy as claimed in claim 1, comprise the steps:
The first step: batching
Select pure metal for use, according to nominal composition Al 84Ni 10Ce (6-x)Zr x(x=1～4, at.%), Al 84Ni (10-y)Ce 6Zr y(y=1～6, at.%) or Al (84-z)Ni 10Ce 6Zr z(z=1～5, at.%), batching;
Second step: preparation mother alloy
With alloy raw material vacuum arc furnace melting 3～6 times that the first step prepares, carry out induction stirring simultaneously, make the uniform mother alloy of melting; Or make mother alloy with vacuum induction melting furnace melting in the Ar protective atmosphere;
The 3rd step: get rid of band preparation amorphous
After polishing and cleaning, place lower end ground-in silica tube to heat remelting the mother alloy of the second step preparation, treat that mother alloy melts fully after, the mother alloy melt jet is made amorphous ribbon to the copper roller rotating surface cool.
3. the preparation method of a kind of Al-Ni-Ce-Zr aluminum-based amorphous alloy according to claim 2 is characterized in that: silica tube lower end and copper roller surface are at a distance of 1mm～2mm; It is 10m/s that copper rolls minimum line speed, and melt jet pressure is: 0.07MPa～0.08MPa.
CN 201010195874 2010-06-10 2010-06-10 Al-Ni-Ce-Zr aluminum-based amorphous alloy and preparation method thereof Pending CN101838779A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102168231A (en) * 2011-03-10 2011-08-31 中南大学 Method for preparing amorphous/crystal composite structure aluminium-based alloy

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05302138A (en) * 1991-09-26 1993-11-16 Nagahama Hidenobu Aluminum base alloy laminated and compacted material and its manufacture
CN1616702A (en) * 2003-11-14 2005-05-18 兰州理工大学 Aluminium base noncrystal alloy and its preparing method

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05302138A (en) * 1991-09-26 1993-11-16 Nagahama Hidenobu Aluminum base alloy laminated and compacted material and its manufacture
CN1616702A (en) * 2003-11-14 2005-05-18 兰州理工大学 Aluminium base noncrystal alloy and its preparing method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102168231A (en) * 2011-03-10 2011-08-31 中南大学 Method for preparing amorphous/crystal composite structure aluminium-based alloy

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Application publication date: 20100922