CN105385966A - Aluminum-based amorphous alloy, preparation method and applications thereof - Google Patents
Aluminum-based amorphous alloy, preparation method and applications thereof Download PDFInfo
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- CN105385966A CN105385966A CN201410419376.6A CN201410419376A CN105385966A CN 105385966 A CN105385966 A CN 105385966A CN 201410419376 A CN201410419376 A CN 201410419376A CN 105385966 A CN105385966 A CN 105385966A
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Abstract
Example embodiments of the present invention provide an aluminum-based amorphous alloy, which comprises, by atomic percent, 0-4% of yttrium, 1-4% of gadolinium, 0.5-2% of lanthanum, 0.5-2% of cobalt, 7-9% of nickel, and the balance of aluminum. According to the present invention, the aluminum-based amorphous alloy components have strong amorphous forming ability, the cooling rate is low, the alloy component Al86Ni8Co1La1Y2Gd2 can achieve the ultra-thick full-amorphous strip, the thickness achieves 155 [mu]m, and the toughness is good; and the aluminum-based amorphous alloy powder is formed from the aluminum-based amorphous alloy components so as to prepare the good aluminum alloy amorphous raw material for thermal spraying technology, powder metallurgy technology, 3D printing technology and other related technologies. Embodiments of the present invention further provide a preparation method and applications of the aluminum-based amorphous alloy.
Description
Technical field
The present invention relates to amorphous alloy field, particularly relate to a kind of Al-based Amorphous Alloys and its preparation method and application.
Background technology
Non-crystaline amorphous metal refers to that material internal structure Atom is a kind of state of longrange disorder arrangement, and it has dislocation or crystal boundary unlike crystalline material, and its valence link is that metallic bond combines, has good hardness and solidity to corrosion.Wherein, al based amorphous alloy has better antiseptic property, wear resistance and higher hardness compared to aluminium alloy, and Young's modulus is also higher compared to common aluminum alloy, also has lower thermal expansivity; And it is lower compared to Fe-based amorphous alloy powder density.These potential excellent properties imply that it has more wide application prospect, therefore obtain the concern of industry.
The exploitation of al based amorphous alloy, experience the time of about about 40 years, but due to the reasons such as the characteristic be very easily oxidized and extremely strong activity of aluminium element, cause al based amorphous alloy block materials, band, the technology of preparing slower development of powder etc., thus cause its correlation technique, be processed into coating as al based amorphous alloy carried out hot-spraying techniques to carry out conduction anticorrosion, or the technique of carrying out mechanical alloying makes large block amorphous product, or the amorphous product also slower development of certain size is formed by 3D printing technique, up till now, domestic 3D prints raw material of aluminum alloy and also depends on external import.
Given this, current, develop a kind of al based amorphous alloy component of uniqueness to realize volume production, or obtain amorphous formation ability is strong, thermal stability is high aluminium-based amorphous alloy synthetic powder or band, for the correlation technique such as hot-spraying techniques, powder metallurgy technology, 3D printing technique of al based amorphous alloy prepares good aluminium alloy amorphous starting material, promote the development of al based amorphous alloy materials application, break 3D and print the present situation that raw material of aluminum alloy depends on external import and seem particularly important.
Summary of the invention
In view of this, embodiment of the present invention first aspect provides a kind of Al-based Amorphous Alloys, this Al-based Amorphous Alloys component has very strong amorphous formation ability, the full amorphous ribbon of super thick and spherical full amorphous powder can be obtained, for the correlation techniques such as hot-spraying techniques, powder metallurgy technology, 3D printing technique have prepared good aluminium alloy amorphous starting material.
First aspect, embodiments provides a kind of Al-based Amorphous Alloys, comprises the component of following atomic percent:
Yttrium: 0 ~ 4%;
Gadolinium: 1 ~ 4%;
Lanthanum: 0.5 ~ 2%;
Cobalt: 0.5 ~ 2%;
Nickel: 7 ~ 9%;
Surplus is aluminium.
The embodiment of the present invention is added with the element being beneficial to and forming amorphous in aluminium-based amorphous alloy Al-TM (transition element)-RE (rare earth element) system, especially adds a certain amount of gadolinium to improve amorphous formation ability.
In embodiment of the present invention, the atomic percent of described yttrium is 1 ~ 4%.
In embodiment of the present invention, the atomic percent of described gadolinium is 2 ~ 3%.
In embodiment of the present invention, the atomic percent of described lanthanum is 1 ~ 1.5%.
In embodiment of the present invention, the atomic percent of described cobalt is 1 ~ 1.5%.
In embodiment of the present invention, the atomic percent of described nickel is 8%.
The Al-based Amorphous Alloys that embodiment of the present invention first aspect provides, this component Al-based Amorphous Alloys has very strong amorphous formation ability, speed of cooling is low, the amorphous ribbon of super thick and uniform spherical amorphous powder can be obtained, for the correlation techniques such as hot-spraying techniques, powder metallurgy technology, 3D printing technique have prepared good aluminium alloy amorphous starting material.
Second aspect, embodiments provides a kind of preparation method of Al-based Amorphous Alloys, comprises the following steps:
According to following atomic percent proportioning, by each raw material simple substance mixing, obtain Al-based Amorphous Alloys raw material: yttrium: 0 ~ 4%; Gadolinium: 1 ~ 4%; Lanthanum: 0.5 ~ 2%; Cobalt: 0.5 ~ 2%; Nickel: 7 ~ 9%; Surplus is aluminium;
Under protection of inert gas, described Al-based Amorphous Alloys raw material is carried out in vacuum arc or vacuum induction furnace melt back even to the melting of described Al-based Amorphous Alloys raw material, after cooling, obtain aluminium-based amorphous alloy state master alloy ingot;
Described aluminium-based amorphous alloy state master alloy ingot is cut into aluminium-based amorphous alloy state mother alloy block; described aluminium-based amorphous alloy state mother alloy block is put into silica tube; being fixed on by described silica tube gets rid of in band machine again, under protection of inert gas, gets rid of band machine and prepare Al-based Amorphous Alloys band described in utilization.
In embodiment of the present invention, described in get rid of band machine working parameter be: the running roller minimum line speed that copper roller gets rid of band is 3m/s, and vacuum tightness is less than 5 × 10
-3pa, spraying pressure is 0.07 ~ 0.08Mpa, and injection temperature is 1200 ~ 1400 DEG C.
In embodiment of the present invention, before Al-based Amorphous Alloys raw material described in melting, first melting titanium ingot is to absorb oxygen in described vacuum arc or vacuum induction furnace and other impurity, purifying melting atmosphere.
In embodiment of the present invention, the thickness of described Al-based Amorphous Alloys band is 115 ~ 220 μm.
In embodiment of the present invention, the purity of described each raw material simple substance is all greater than 99%.
In embodiment of the present invention, described aluminium-based amorphous alloy state mother alloy block, before putting into silica tube, first carries out surperficial deoxidation process.
The preparation method of a kind of Al-based Amorphous Alloys that embodiment of the present invention second aspect provides, technique is simple, under lower running roller linear velocity, obtains the Al-based Amorphous Alloys band compared with heavy thickness, and good toughness, wherein alloying constituent Al
86ni
8co
1la
1y
2gd
2obtain the full amorphous ribbon of super thick, reach 155 μm.
The third aspect, embodiments provides a kind of preparation method of Al-based Amorphous Alloys, comprises the following steps:
According to following atomic percent proportioning, by each raw material simple substance mixing, obtain Al-based Amorphous Alloys raw material: yttrium Y:0 ~ 4%; Gadolinium Gd:1 ~ 4%; Lanthanum La:0.5 ~ 2%; Cobalt Co:0.5 ~ 2%; Nickel: 7 ~ 9%; Surplus is aluminium;
Described Al-based Amorphous Alloys raw material is placed in gas-atomized powder equipment, adopts vacuum aerosolization method to prepare Al-based Amorphous Alloys powder.
In embodiment of the present invention; the specific operation process of described aerosolization method is: under protection of inert gas; described Al-based Amorphous Alloys raw material is carried out after vacuum melting becomes alloy solution; be filled with high pressure argon gas as atomizing medium, described alloy solution is atomized and after cooling, namely obtains described Al-based Amorphous Alloys powder; wherein; melting vacuum tightness is less than 1Pa, and smelting temperature is 1200 ~ 1400 DEG C, and atomizing pressure is 20 ~ 45 kilograms.
In embodiment of the present invention, the purity of described each raw material simple substance is all greater than 99%.
The preparation method of a kind of Al-based Amorphous Alloys that the embodiment of the present invention third aspect provides, technique is simple, the Al-based Amorphous Alloys powder that amorphous structure is good, uniform particles, thermostability are high is obtained, for the correlation techniques such as hot-spraying techniques, powder metallurgy technology, 3D printing technique have prepared good aluminium alloy amorphous starting material by vacuum atomizing.
Fourth aspect, embodiments provides the application of Al-based Amorphous Alloys described in above-mentioned first aspect in hot-spraying techniques, powder metallurgical technique, 3D metallic print technique.
The advantage of the embodiment of the present invention will partly be illustrated in the following description, and a part is apparent according to specification sheets, or can be known by the enforcement of the embodiment of the present invention.
Accompanying drawing explanation
Fig. 1 is the XRD diffractogram of gained Al-based Amorphous Alloys band in the embodiment of the present invention one to embodiment four;
Fig. 2 is the XRD diffractogram of gained Al-based Amorphous Alloys band in the embodiment of the present invention five to embodiment eight;
Fig. 3 is the XRD diffractogram of gained Al-based Amorphous Alloys powder in the embodiment of the present invention nine;
Fig. 4 is the electron microscope picture of gained Al-based Amorphous Alloys powder in the embodiment of the present invention nine;
Fig. 5 is the XRD diffractogram of gained Al-based Amorphous Alloys powder in the embodiment of the present invention ten;
Fig. 6 is the electron microscope picture of gained Al-based Amorphous Alloys powder in the embodiment of the present invention ten.
Embodiment
The following stated is the preferred implementation of the embodiment of the present invention; should be understood that; for those skilled in the art; under the prerequisite not departing from embodiment of the present invention principle; can also make some improvements and modifications, these improvements and modifications are also considered as the protection domain of the embodiment of the present invention.
Embodiment of the present invention first aspect provides a kind of Al-based Amorphous Alloys, this Al-based Amorphous Alloys component has very strong amorphous formation ability, the full amorphous ribbon of super thick and uniform spherical full amorphous powder can be obtained, for the correlation techniques such as hot-spraying techniques, powder metallurgy technology, 3D printing technique have prepared good aluminium alloy amorphous starting material.
First aspect, embodiments provides a kind of Al-based Amorphous Alloys, comprises the component of following atomic percent:
Yttrium: 0 ~ 4%;
Gadolinium: 1 ~ 4%;
Lanthanum: 0.5 ~ 2%;
Cobalt: 0.5 ~ 2%;
Nickel: 7 ~ 9%;
Surplus is aluminium.
The embodiment of the present invention is added with the element being beneficial to and forming amorphous in aluminium-based amorphous alloy Al-TM (transition element)-RE (rare earth element) system, especially adds a certain amount of gadolinium to improve amorphous formation ability.
In embodiment of the present invention, the atomic percent of described yttrium is 1 ~ 4%.
In embodiment of the present invention, the atomic percent of described yttrium is 2 ~ 3%.
In embodiment of the present invention, the atomic percent of described gadolinium is 2 ~ 3%.
In embodiment of the present invention, the atomic percent of described lanthanum is 1 ~ 1.5%.
In embodiment of the present invention, the atomic percent of described cobalt is 1 ~ 1.5%.
In embodiment of the present invention, the atomic percent of described nickel is 8%.
The al based amorphous alloy that the embodiment of the present invention provides, by adding large size atom Gd, La and Y, makes supercooled liquid have finer and close atom stacking provisions, atom long-range is spread and becomes difficulty, thus suppress the forming core of crystalline phases, improve amorphous formation ability.And except Y element, other simple substance alloy prices are all relatively more cheap, thus reduce the cost of al based amorphous alloy.
The Al-based Amorphous Alloys that embodiment of the present invention first aspect provides, this component Al-based Amorphous Alloys has very strong amorphous formation ability, speed of cooling is low, the amorphous ribbon of super thick and uniform spherical amorphous powder can be obtained, for the correlation techniques such as hot-spraying techniques, powder metallurgy technology, 3D printing technique have prepared good aluminium alloy amorphous starting material.
Second aspect, embodiments provides a kind of preparation method of Al-based Amorphous Alloys, comprises the following steps:
According to following atomic percent proportioning, by each raw material simple substance mixing, obtain Al-based Amorphous Alloys raw material: yttrium: 0 ~ 4%; Gadolinium: 1 ~ 4%; Lanthanum: 0.5 ~ 2%; Cobalt: 0.5 ~ 2%; Nickel: 7 ~ 9%; Surplus is aluminium;
Under protection of inert gas, described Al-based Amorphous Alloys raw material is carried out in vacuum arc or vacuum induction furnace melt back even to the melting of described Al-based Amorphous Alloys raw material, after cooling, obtain aluminium-based amorphous alloy state master alloy ingot;
Described aluminium-based amorphous alloy state master alloy ingot is cut into aluminium-based amorphous alloy state mother alloy block; described aluminium-based amorphous alloy state mother alloy block is put into silica tube; being fixed on by described silica tube gets rid of in band machine again, under protection of inert gas, gets rid of band machine and prepare Al-based Amorphous Alloys band described in utilization.
In embodiment of the present invention, described in get rid of band machine working parameter be: the running roller minimum line speed that copper roller gets rid of band is 3m/s, and vacuum tightness is less than 5 × 10
-3pa, spraying pressure is 0.07 ~ 0.08Mpa, and injection temperature is 1200 ~ 1400 DEG C.
In embodiment of the present invention, before Al-based Amorphous Alloys raw material described in melting, first melting titanium ingot is to absorb oxygen in described vacuum arc or vacuum induction furnace and other impurity, purifying melting atmosphere.
In embodiment of the present invention, the thickness of described Al-based Amorphous Alloys band is 115 ~ 220 μm.
In embodiment of the present invention, the purity of described each raw material simple substance is all greater than 99%.
In embodiment of the present invention, described aluminium-based amorphous alloy state mother alloy block, before putting into silica tube, first carries out surperficial deoxidation process.In embodiment of the present invention, described surperficial deoxidation process realizes by sharpening machine polishing.
In embodiment of the present invention, after described aluminium-based amorphous alloy state mother alloy block puts into silica tube, in silica tube, directly carry out melting, then get rid of band slivering.
In embodiment of the present invention, the atomic percent of described yttrium is 1 ~ 4%.
In embodiment of the present invention, the atomic percent of described yttrium is 2 ~ 3%.
In embodiment of the present invention, the atomic percent of described gadolinium is 2 ~ 3%.
In embodiment of the present invention, the atomic percent of described lanthanum is 1 ~ 1.5%.
In embodiment of the present invention, the atomic percent of described cobalt is 1 ~ 1.5%.
In embodiment of the present invention, the atomic percent of described nickel is 8%.
In embodiment of the present invention, described rare gas element can be argon gas.
In embodiment of the present invention, for melting is even, the number of times of described melt back is more than 4 times.
The preparation method of a kind of Al-based Amorphous Alloys that embodiment of the present invention second aspect provides, technique is simple, under lower running roller linear velocity, obtains the Al-based Amorphous Alloys band compared with heavy thickness, and good toughness, wherein alloying constituent Al
86ni
8co
1la
1y
2gd
2obtain the full amorphous ribbon of super thick, reach 155 μm.
The third aspect, embodiments provides a kind of preparation method of Al-based Amorphous Alloys, comprises the following steps:
According to following atomic percent proportioning, by each raw material simple substance mixing, obtain Al-based Amorphous Alloys raw material: yttrium Y:0 ~ 4%; Gadolinium Gd:1 ~ 4%; Lanthanum La:0.5 ~ 2%; Cobalt Co:0.5 ~ 2%; Nickel: 7 ~ 9%; Surplus is aluminium;
Described Al-based Amorphous Alloys raw material is placed in gas-atomized powder equipment, adopts vacuum aerosolization method to prepare Al-based Amorphous Alloys powder.
In embodiment of the present invention; the specific operation process of described aerosolization method is: under protection of inert gas; described Al-based Amorphous Alloys raw material is carried out after vacuum melting becomes alloy solution; be filled with high pressure argon gas as atomizing medium, described alloy solution is atomized and after cooling, namely obtains described Al-based Amorphous Alloys powder; wherein; melting vacuum tightness is less than 1Pa, and smelting temperature is 1200 ~ 1400 DEG C, and atomizing pressure is 20 ~ 45 kilograms.
In embodiment of the present invention, the purity of described each raw material simple substance is all greater than 99%.
In embodiment of the present invention, the atomic percent of described yttrium is 1 ~ 4%.
In embodiment of the present invention, the atomic percent of described yttrium is 2 ~ 3%.
In embodiment of the present invention, the atomic percent of described gadolinium is 2 ~ 3%.
In embodiment of the present invention, the atomic percent of described lanthanum is 1 ~ 1.5%.
In embodiment of the present invention, the atomic percent of described cobalt is 1 ~ 1.5%.
In embodiment of the present invention, the atomic percent of described nickel is 8%.
In embodiment of the present invention, described rare gas element can be argon gas.
The preparation method of a kind of Al-based Amorphous Alloys that the embodiment of the present invention third aspect provides, technique is simple, the Al-based Amorphous Alloys powder that amorphous structure is good, uniform particles, thermostability are high is obtained, for the correlation techniques such as hot-spraying techniques, powder metallurgy technology, 3D printing technique have prepared good aluminium alloy amorphous starting material by vacuum atomizing.
Fourth aspect, embodiments provides the application of Al-based Amorphous Alloys described in above-mentioned first aspect in hot-spraying techniques, powder metallurgical technique, 3D metallic print technique.
The embody rule scope of the al based amorphous alloy powder that the embodiment of the present invention provides includes but not limited to following technique: hot-spraying techniques (bag knows cold spraying, plasma spraying, supersonic spray coating, vacuum plasma spray coating etc.), powder metallurgical technique, 3D metallic print technique (increasing material manufacturing technology) etc.The al based amorphous alloy powder that the embodiment of the present invention provides can combine with following base material and apply: as magnesium alloy, aluminium alloy, ferrous materials etc., applies by hot-spraying techniques or other technique or combines on the substrate.Conventional Fe-based amorphous alloy powder is combined to improve magnesium alloy antiseptic property with magnesium alloy substrates at present, but compared with aluminium alloy amorphous powdered alloy, the electropotential of Fe-based amorphous alloy powder and magnesium alloy is larger, more easily produce corrosion, therefore, by contrast, the aluminium alloy amorphous powdered alloy that the embodiment of the present invention provides is combined the antiseptic property that more effectively can improve magnesium alloy with magnesium alloy substrates.
Multiple embodiment is divided to be further detailed the embodiment of the present invention below.The embodiment of the present invention is not limited to following specific embodiment.In the scope of constant Principal Right, carrying out that can be suitable is changed and implements.
Embodiment one
A kind of composition is Al
86la
1ni
8co
1y
3gd
1al-based Amorphous Alloys band, its concrete preparation process is:
According to Al
86la
1ni
8co
1y
3gd
1atomic percent proportioning, prepare each raw material simple substance, the purity of each raw material simple substance is all greater than 99%, by the mixing of each raw material simple substance, obtains Al-based Amorphous Alloys raw material;
Under argon shield, above-mentioned Al-based Amorphous Alloys raw material is carried out in vacuum arc melt back even to the melting of Al-based Amorphous Alloys raw material, after cooling, obtain aluminium-based amorphous alloy state master alloy ingot; Before melting, first melting titanium ingot is with the oxygen in absorption furnace and other impurity, to be further purified melting atmosphere.In order to melting is even, melt back number of times is more than 4 times.
The surface scale sharpening machine of gained aluminium-based amorphous alloy state master alloy ingot is polished off; be cut into aluminium-based amorphous alloy state mother alloy block; again aluminium-based amorphous alloy state mother alloy block is put into silica tube; and silica tube is fixed on gets rid of in band machine; under argon shield, utilize single roller to get rid of band machine and prepare Al-based Amorphous Alloys band.The working parameter getting rid of band machine is: preparing running roller linear velocity is 5m/s, and vacuum tightness is 5 × 10
-3below Pa, spraying pressure is 0.08Mpa, and injection temperature is as the criterion with alloy melting.
Detected by the present embodiment gained Al-based Amorphous Alloys band X-ray diffractometer, thickness is 130 μm, is whole amorphous.
Embodiment two
A kind of composition is Al
86la
1ni
8co
1y
2gd
2al-based Amorphous Alloys band, its concrete preparation process is:
According to Al
86la
1ni
8co
1y
2gd
2atomic percent proportioning, prepare each raw material simple substance, the purity of each raw material simple substance is all greater than 99%, by the mixing of each raw material simple substance, obtains Al-based Amorphous Alloys raw material;
Under argon shield, above-mentioned Al-based Amorphous Alloys raw material is carried out in vacuum arc melt back even to the melting of Al-based Amorphous Alloys raw material, after cooling, obtain aluminium-based amorphous alloy state master alloy ingot; Before melting, first melting titanium ingot is with the oxygen in absorption furnace and other impurity, to be further purified melting atmosphere.In order to melting is even, melt back number of times is more than 4 times.
The surface scale sharpening machine of gained aluminium-based amorphous alloy state master alloy ingot is polished off; be cut into aluminium-based amorphous alloy state mother alloy block; again aluminium-based amorphous alloy state mother alloy block is put into silica tube; and silica tube is fixed on gets rid of in band machine; under argon shield, utilize single roller to get rid of band machine and prepare Al-based Amorphous Alloys band.The working parameter getting rid of band machine is: preparing running roller linear velocity is 5m/s, and vacuum tightness is 5 × 10
-3below Pa, spraying pressure is 0.08Mpa, and injection temperature is as the criterion with alloy melting.
Detected by the present embodiment gained Al-based Amorphous Alloys band X-ray diffractometer, thickness is 135 μm, and toughness is better, is whole amorphous.
Embodiment three
A kind of composition is Al
86la
1ni
8co
1y
1gd
3al-based Amorphous Alloys band, its concrete preparation process is:
According to Al
86la
1ni
8co
1y
1gd
3atomic percent proportioning, prepare each raw material simple substance, the purity of each raw material simple substance is all greater than 99%, by the mixing of each raw material simple substance, obtains Al-based Amorphous Alloys raw material;
Under argon shield, above-mentioned Al-based Amorphous Alloys raw material is carried out in vacuum arc melt back even to the melting of Al-based Amorphous Alloys raw material, after cooling, obtain aluminium-based amorphous alloy state master alloy ingot; Before melting, first melting titanium ingot is with the oxygen in absorption furnace and other impurity, to be further purified melting atmosphere.In order to melting is even, melt back number of times is more than 4 times.
The surface scale sharpening machine of gained aluminium-based amorphous alloy state master alloy ingot is polished off; be cut into aluminium-based amorphous alloy state mother alloy block; again aluminium-based amorphous alloy state mother alloy block is put into silica tube; and silica tube is fixed on gets rid of in band machine; under argon shield, utilize single roller to get rid of band machine and prepare Al-based Amorphous Alloys band.The working parameter getting rid of band machine is: preparing running roller linear velocity is 5m/s, and vacuum tightness is 5 × 10
-3below Pa, spraying pressure is 0.07Mpa, and injection temperature is as the criterion with alloy melting.
Detected by the present embodiment gained Al-based Amorphous Alloys band X-ray diffractometer, thickness is 135 μm, is whole amorphous.
Embodiment four
A kind of composition is Al
86la
1ni
8co
1gd
4al-based Amorphous Alloys band, its concrete preparation process is:
According to Al
86la
1ni
8co
1gd
4atomic percent proportioning, prepare each raw material simple substance, the purity of each raw material simple substance is all greater than 99%, by the mixing of each raw material simple substance, obtains Al-based Amorphous Alloys raw material;
Under argon shield, above-mentioned Al-based Amorphous Alloys raw material is carried out in vacuum arc melt back even to the melting of Al-based Amorphous Alloys raw material, after cooling, obtain aluminium-based amorphous alloy state master alloy ingot; Before melting, first melting titanium ingot is with the oxygen in absorption furnace and other impurity, to be further purified melting atmosphere.In order to melting is even, melt back number of times is more than 4 times.
The surface scale sharpening machine of gained aluminium-based amorphous alloy state master alloy ingot is polished off; be cut into aluminium-based amorphous alloy state mother alloy block; again aluminium-based amorphous alloy state mother alloy block is put into silica tube; and silica tube is fixed on gets rid of in band machine; under argon shield, utilize single roller to get rid of band machine and prepare Al-based Amorphous Alloys band.The working parameter getting rid of band machine is: preparing running roller linear velocity is 5m/s, and vacuum tightness is 5 × 10
-3below Pa, spraying pressure is 0.08Mpa, and injection temperature is as the criterion with alloy melting.
Detected by the present embodiment gained Al-based Amorphous Alloys band X-ray diffractometer, thickness is 115 μm, is whole amorphous.
Fig. 1 is the XRD diffractogram of gained Al-based Amorphous Alloys band in the embodiment of the present invention one to embodiment four.In figure, the curve of x=1, x=2, x=3, x=4 represents the detected result of embodiment one, two, three, four respectively, can find, at Al from the result of embodiment one to embodiment four
86ni
8co
1la
1y
4-xgd
x(x=1-4) in system, when x=1,2,3,4 time, be 5m/s preparing running roller linear velocity, vacuum tightness is 5 × 10
-3below Pa, when spraying pressure is 0.07 ~ 0.08Mpa, can obtain the alloy strip of complete amorphous, illustrates that this alloy system has larger amorphous formation ability.
Embodiment five
A kind of composition is Al
86la
1ni
8co
1y
3gd
1al-based Amorphous Alloys band, its concrete preparation process is:
According to Al
86la
1ni
8co
1y
3gd
1atomic percent proportioning, prepare each raw material simple substance, the purity of each raw material simple substance is all greater than 99%, by the mixing of each raw material simple substance, obtains Al-based Amorphous Alloys raw material;
Under argon shield, above-mentioned Al-based Amorphous Alloys raw material is carried out in vacuum arc melt back even to the melting of Al-based Amorphous Alloys raw material, after cooling, obtain aluminium-based amorphous alloy state master alloy ingot; Before melting, first melting titanium ingot is with the oxygen in absorption furnace and other impurity, to be further purified melting atmosphere.In order to melting is even, melt back number of times is more than 4 times.
The surface scale sharpening machine of gained aluminium-based amorphous alloy state master alloy ingot is polished off; be cut into aluminium-based amorphous alloy state mother alloy block; again aluminium-based amorphous alloy state mother alloy block is put into silica tube; and silica tube is fixed on gets rid of in band machine; under argon shield, utilize single roller to get rid of band machine and prepare Al-based Amorphous Alloys band.The working parameter getting rid of band machine is: preparing running roller linear velocity is 3m/s, and vacuum tightness is 5 × 10
-3below Pa, spraying pressure is 0.07Mpa, and injection temperature is as the criterion with alloy melting.
Detected by the present embodiment gained Al-based Amorphous Alloys band X-ray diffractometer, thickness is 220 μm, is part amorphous.
Embodiment six
A kind of composition is Al
86la
1ni
8co
1y
2gd
2al-based Amorphous Alloys band, its concrete preparation process is:
According to Al
86la
1ni
8co
1y
2gd
2atomic percent proportioning, prepare each raw material simple substance, the purity of each raw material simple substance is all greater than 99%, by the mixing of each raw material simple substance, obtains Al-based Amorphous Alloys raw material;
Under argon shield, above-mentioned Al-based Amorphous Alloys raw material is carried out in vacuum arc melt back even to the melting of Al-based Amorphous Alloys raw material, after cooling, obtain aluminium-based amorphous alloy state master alloy ingot; Before melting, first melting titanium ingot is with the oxygen in absorption furnace and other impurity, to be further purified melting atmosphere.In order to melting is even, melt back number of times is more than 4 times.
The surface scale sharpening machine of gained aluminium-based amorphous alloy state master alloy ingot is polished off; be cut into aluminium-based amorphous alloy state mother alloy block; again aluminium-based amorphous alloy state mother alloy block is put into silica tube; and silica tube is fixed on gets rid of in band machine; under argon shield, utilize single roller to get rid of band machine and prepare Al-based Amorphous Alloys band.The working parameter getting rid of band machine is: preparing running roller linear velocity is 3m/s, and vacuum tightness is 5 × 10
-3below Pa, spraying pressure is 0.08Mpa, and injection temperature is as the criterion with alloy melting.
Detected by the present embodiment gained Al-based Amorphous Alloys band X-ray diffractometer, thickness is 155 μm, and toughness is better, is whole amorphous.
Embodiment seven
A kind of composition is Al
86la
1ni
8co
1y
1gd
3al-based Amorphous Alloys band, its concrete preparation process is:
According to Al
86la
1ni
8co
1y
1gd
3atomic percent proportioning, prepare each raw material simple substance, the purity of each raw material simple substance is all greater than 99%, by the mixing of each raw material simple substance, obtains Al-based Amorphous Alloys raw material;
Under argon shield, above-mentioned Al-based Amorphous Alloys raw material is carried out in vacuum arc melt back even to the melting of Al-based Amorphous Alloys raw material, after cooling, obtain aluminium-based amorphous alloy state master alloy ingot; Before melting, first melting titanium ingot is with the oxygen in absorption furnace and other impurity, to be further purified melting atmosphere.In order to melting is even, melt back number of times is more than 4 times.
The surface scale sharpening machine of gained aluminium-based amorphous alloy state master alloy ingot is polished off; be cut into aluminium-based amorphous alloy state mother alloy block; again aluminium-based amorphous alloy state mother alloy block is put into silica tube; and silica tube is fixed on gets rid of in band machine; under argon shield, utilize single roller to get rid of band machine and prepare Al-based Amorphous Alloys band.The working parameter getting rid of band machine is: preparing running roller linear velocity is 3m/s, and vacuum tightness is 5 × 10
-3below Pa, spraying pressure is 0.07Mpa, and injection temperature is as the criterion with alloy melting.
Detected by the present embodiment gained Al-based Amorphous Alloys band X-ray diffractometer, thickness is 165 μm, is part amorphous.
Embodiment eight
A kind of composition is Al
86la
1ni
8co
1gd
4al-based Amorphous Alloys band, its concrete preparation process is:
According to Al
86la
1ni
8co
1gd
4atomic percent proportioning, prepare each raw material simple substance, the purity of each raw material simple substance is all greater than 99%, by the mixing of each raw material simple substance, obtains Al-based Amorphous Alloys raw material;
Under argon shield, above-mentioned Al-based Amorphous Alloys raw material is carried out in vacuum arc melt back even to the melting of Al-based Amorphous Alloys raw material, after cooling, obtain aluminium-based amorphous alloy state master alloy ingot; Before melting, first melting titanium ingot is with the oxygen in absorption furnace and other impurity, to be further purified melting atmosphere.In order to melting is even, melt back number of times is more than 4 times.
The surface scale sharpening machine of gained aluminium-based amorphous alloy state master alloy ingot is polished off; be cut into aluminium-based amorphous alloy state mother alloy block; again aluminium-based amorphous alloy state mother alloy block is put into silica tube; and silica tube is fixed on gets rid of in band machine; under argon shield, utilize single roller to get rid of band machine and prepare Al-based Amorphous Alloys band.The working parameter getting rid of band machine is: preparing running roller linear velocity is 3m/s, and vacuum tightness is 5 × 10
-3below Pa, spraying pressure is 0.07Mpa, and injection temperature is as the criterion with alloy melting.
Detected by the present embodiment gained Al-based Amorphous Alloys band X-ray diffractometer, thickness is 175 μm, is part amorphous.
Fig. 2 is the XRD diffractogram of gained Al-based Amorphous Alloys band in the embodiment of the present invention five to embodiment eight; In figure, the curve of x=1, x=2, x=3, x=4 represents the detected result of embodiment five, six, seven, eight respectively, can find, at Al from the result of embodiment five to embodiment eight
86ni
8co
1la
1y
4-xgd
x(x=1-4) in system, when x=1,3,4 time, be 3m/s preparing running roller linear velocity, vacuum tightness is 5 × 10
-3below Pa, when spraying pressure is 0.07 ~ 0.08Mpa, can obtain the alloy strip of part amorphous, has separated out the a-Al phase of little amount in alloy strip; When x=2, the alloy strip of complete amorphous can be obtained, illustrate that this alloy system amorphous formation ability when x=2 is maximum.
Embodiment nine
A kind of composition is Al
86la
1ni
8co
1y
2gd
2al-based Amorphous Alloys powder, its concrete preparation process is:
According to Al
86la
1ni
8co
1y
2gd
2atomic percent proportioning, prepare each raw material simple substance, the purity of each raw material simple substance is all greater than 99%, by the mixing of each raw material simple substance, obtains Al-based Amorphous Alloys raw material;
Al-based Amorphous Alloys raw material is placed in the inductive crucible of gas-atomized powder equipment; vacuumize and be filled with argon shield; Al-based Amorphous Alloys raw material being carried out vacuum melting to alloy solution under induction heating slowly at the uniform velocity pours in insulation bag; be filled with high pressure argon gas as atomizing medium simultaneously; alloy solution stream is under the impact of high pressure argon gas stream; be atomized into small droplets, final cooling forms al based amorphous alloy powder.Wherein, melting vacuum tightness is less than 1Pa, and smelting temperature is 1300 DEG C, and atomizing pressure is 30 kilograms.
The present embodiment gained al based amorphous alloy powder is carried out collecting and sieving, filters out 500 object powdered alloys.The powder X-ray diffractometer filtered out and scanning electronic microscope are detected, Fig. 3 is the XRD diffractogram of gained Al-based Amorphous Alloys powder in the embodiment of the present invention nine; As can be known from Fig. 3, filtering out 500 object powdered alloys is whole amorphous powder.Fig. 4 is the electron microscope picture of gained Al-based Amorphous Alloys powder in the embodiment of the present invention nine.As can be known from Fig. 4, the al based amorphous alloy powder that the technique of the embodiment of the present invention prepares is spherical powder.
Embodiment ten
A kind of composition is Al
86la
1ni
8co
1.
5y
1gd
2.
5al-based Amorphous Alloys powder, its concrete preparation process is:
According to Al
86la
1ni
8co
1.
5y
1gd
2.
5atomic percent proportioning, prepare each raw material simple substance, the purity of each raw material simple substance is all greater than 99%, by the mixing of each raw material simple substance, obtains Al-based Amorphous Alloys raw material;
Al-based Amorphous Alloys raw material is placed in the inductive crucible of gas-atomized powder equipment; vacuumize and be filled with argon shield; Al-based Amorphous Alloys raw material being carried out vacuum melting to alloy solution under induction heating slowly at the uniform velocity pours in insulation bag; be filled with high pressure argon gas as atomizing medium simultaneously; alloy solution stream is under the impact of high pressure argon gas stream; be atomized into small droplets, final cooling forms al based amorphous alloy powder.Wherein, melting vacuum tightness is less than 1Pa, and smelting temperature is 1400 DEG C, and atomizing pressure is 45 kilograms.
The present embodiment gained al based amorphous alloy powder is carried out collecting and sieving, filters out 500 object powdered alloys.The powder X-ray diffractometer filtered out and scanning electronic microscope being detected, is whole amorphous.Fig. 5 is the XRD diffractogram of gained Al-based Amorphous Alloys powder in the embodiment of the present invention nine; As can be known from Fig. 5, filtering out 500 object powdered alloys is whole amorphous powder.Fig. 6 is the electron microscope picture of gained Al-based Amorphous Alloys powder in the embodiment of the present invention nine.As can be known from Fig. 6, the al based amorphous alloy powder that the technique of the embodiment of the present invention prepares is spherical powder.
From the above, the Al-based Amorphous Alloys that the embodiment of the present invention provides, there is very strong amorphous formation ability, speed of cooling is low, the amorphous ribbon of super thick and uniform spherical amorphous powder can be obtained, under lower running roller linear velocity, obtain the Al-based Amorphous Alloys band compared with heavy thickness, and good toughness, wherein alloying constituent Al
86ni
8co
1la
1y
2gd
2obtain the full amorphous ribbon of super thick, reach 155 μm.Utilize vacuum aerosolization method can obtain spherical amorphous powder, for the correlation techniques such as hot-spraying techniques, powder metallurgy technology, 3D printing technique have prepared good aluminium alloy amorphous starting material.
Claims (16)
1. an Al-based Amorphous Alloys, is characterized in that, comprises the component of following atomic percent:
Yttrium: 0 ~ 4%;
Gadolinium: 1 ~ 4%;
Lanthanum: 0.5 ~ 2%;
Cobalt: 0.5 ~ 2%;
Nickel: 7 ~ 9%;
Surplus is aluminium.
2. Al-based Amorphous Alloys as claimed in claim 1, it is characterized in that, the atomic percent of described yttrium is 1 ~ 4%.
3. Al-based Amorphous Alloys as claimed in claim 1 or 2, it is characterized in that, the atomic percent of described gadolinium is 2 ~ 3%.
4. the Al-based Amorphous Alloys as described in any one of claims 1 to 3, is characterized in that, the atomic percent of described lanthanum is 1 ~ 1.5%.
5. the Al-based Amorphous Alloys as described in any one of Claims 1 to 4, is characterized in that, the atomic percent of described cobalt is 1 ~ 1.5%.
6. the Al-based Amorphous Alloys as described in any one of Claims 1 to 5, is characterized in that, the atomic percent of described nickel is 8%.
7. a preparation method for Al-based Amorphous Alloys, is characterized in that, comprises the following steps:
According to following atomic percent proportioning, by each raw material simple substance mixing, obtain Al-based Amorphous Alloys raw material: yttrium: 0 ~ 4%; Gadolinium: 1 ~ 4%; Lanthanum: 0.5 ~ 2%; Cobalt: 0.5 ~ 2%; Nickel: 7 ~ 9%; Surplus is aluminium;
Under protection of inert gas, described Al-based Amorphous Alloys raw material is carried out in vacuum arc or vacuum induction furnace melt back even to the melting of described Al-based Amorphous Alloys raw material, after cooling, obtain aluminium-based amorphous alloy state master alloy ingot;
Described aluminium-based amorphous alloy state master alloy ingot is cut into aluminium-based amorphous alloy state mother alloy block; described aluminium-based amorphous alloy state mother alloy block is put into silica tube; being fixed on by described silica tube gets rid of in band machine again, under protection of inert gas, gets rid of band machine and prepare Al-based Amorphous Alloys band described in utilization.
8. the preparation method of Al-based Amorphous Alloys as claimed in claim 7, is characterized in that, described in get rid of band machine working parameter be: the running roller minimum line speed that copper roller gets rid of band is 3m/s, and vacuum tightness is less than 5 × 10
-3pa, spraying pressure is 0.07 ~ 0.08Mpa, and injection temperature is 1200 ~ 1400 DEG C.
9. the preparation method of Al-based Amorphous Alloys as claimed in claim 7 or 8, it is characterized in that, before Al-based Amorphous Alloys raw material described in melting, first melting titanium ingot is to absorb oxygen in described vacuum arc or vacuum induction furnace and other impurity, purifying melting atmosphere.
10. the preparation method of the Al-based Amorphous Alloys as described in any one of claim 7-9, is characterized in that, the purity of described each raw material simple substance is all greater than 99%.
The preparation method of 11. Al-based Amorphous Alloys as described in any one of claim 7-10, it is characterized in that, described aluminium-based amorphous alloy state mother alloy block, before putting into silica tube, first carries out surperficial deoxidation process.
The preparation method of 12. Al-based Amorphous Alloys as described in any one of claim 7-11, it is characterized in that, the thickness of described Al-based Amorphous Alloys band is 115 ~ 220 μm.
The preparation method of 13. 1 kinds of Al-based Amorphous Alloys, is characterized in that, comprises the following steps:
According to following atomic percent proportioning, by each raw material simple substance mixing, obtain Al-based Amorphous Alloys raw material: yttrium: 0 ~ 4%; Gadolinium: 1 ~ 4%; Lanthanum: 0.5 ~ 2%; Cobalt: 0.5 ~ 2%; Nickel: 7 ~ 9%; Surplus is aluminium;
Described Al-based Amorphous Alloys raw material is placed in gas-atomized powder equipment, adopts vacuum aerosolization method to prepare Al-based Amorphous Alloys powder.
The preparation method of 14. Al-based Amorphous Alloys as claimed in claim 13; it is characterized in that; the specific operation process of described aerosolization method is: under protection of inert gas; described Al-based Amorphous Alloys raw material is carried out after vacuum melting becomes alloy solution; be filled with high pressure argon gas as atomizing medium; described alloy solution is atomized and after cooling; namely described Al-based Amorphous Alloys powder is obtained; wherein; melting vacuum tightness is less than 1Pa; smelting temperature is 1200 ~ 1400 DEG C, and atomizing pressure is 20 ~ 45 kilograms.
The preparation method of 15. Al-based Amorphous Alloys as described in any one of claim 13 or 14, it is characterized in that, the purity of described each raw material simple substance is all greater than 99%.
16. application of Al-based Amorphous Alloys in hot-spraying techniques, powder metallurgical technique, 3D metallic print technique as described in any one of claim 1 ~ 6.
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