CN100580127C - Aluminum base Al-Cu-Zn-Sn quaternary system block amorphous alloy - Google Patents
Aluminum base Al-Cu-Zn-Sn quaternary system block amorphous alloy Download PDFInfo
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- CN100580127C CN100580127C CN200810064805A CN200810064805A CN100580127C CN 100580127 C CN100580127 C CN 100580127C CN 200810064805 A CN200810064805 A CN 200810064805A CN 200810064805 A CN200810064805 A CN 200810064805A CN 100580127 C CN100580127 C CN 100580127C
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Abstract
The invention provides a bulk amorphous alloy with a quaternionic aluminum-base Al-Cu-Zn-Sn architecture and a preparation method thereof. The preparation method of the bulk amorphous alloy comprises following steps: Step 1; the components of Al and Cu are evenly mixed and melted with the mass ratio of 1 to 1 in a high-temperature and box-typed electrical resistance furnace, and then cooled so as to obtain dualistic alloy ingots; Step 2: the dualistic alloy ingots obtained from Step 1 are mechanically smashed, and raw materials are prepared according to the mixture ratio with the nominal composition being (Al 0.7 Cu 0.3) 100-x-y Zn x Sn y, wherein, the x lying in a closed interval between 30 and 31 and the y lying in a closed interval between 5 and 10; Step 3; the (Al 0.7 Cu 0.3) 100-x-y Zn x Sn y alloy is smelted in a crucible electric resistance furnace and repeatedly agitated for at least 3 to 4 times so as to ensure the even melting of the alloy; Step 4: the bulk amorphous alloy is prepared through the melted (Al 0.7 Cu 0.3) 100-x-y Zn x Sn y alloy that is obtained from Step 3 by adopting a simple copper-matrix casting method. The addition of the Sn element into the bulk amorphous alloy is favorable for improving the amorphous forming ability (GFA) of the alloy, thus preparing the amorphous alloy with larger size; the simple copper-matrix casting method is adopted, thus forming the bulk amorphous alloy with the quaternionic Al-Cu-Zn-Sn architecture that has high hardness, thermal stability and excellent corrosion resistance.
Description
(1) technical field
What the present invention relates to is a kind of alloy, particularly a kind of aluminum base Al-Cu-Zn-Sn quaternary system block amorphous alloy.
(2) background technology
Non-crystaline amorphous metal is also referred to as metallic glass (Metglass), be to make alloy liquid rapid solidification by the chilling means, the solid matter state that the confusion that causes the inner atom of solid alloy at room temperature also keeping being similar to Liquid Structure is arranged, it has metal and glass performance concurrently.Because amorphous alloy is different from crystal alloy fully on atom is arranged, its special microtexture has determined it to have a series of premium propertiess as: favorable mechanical performance, excellent physicals and special chemical property, is suitable for making electron device, magnetic device, accurate machine construction spare, sports goods, biomedical implants and advanced weaponry member etc.
Up to now, non-crystaline amorphous metal systems such as Ni base, Zr base, Cu base, Fe base, Mg base, Co base, Ti base and rare earth based have been prepared.In these non-crystaline amorphous metal systems, it is 2～3 times of aluminium base crystal alloy that aluminium-based amorphous alloy attitude alloy has high specific strength, have good toughness, high-temperature behavior, superplasticity and erosion resistance simultaneously concurrently, it is a kind of potential novel metal structured material, cause the extensive concern of material supply section educational circles, become present material worker's main goal in research.At present, the research of amorphous aluminum alloy mainly concentrates on Al-RE, (RE is a rare earth element for binary such as Al-RE-TM and Al-LTM-ETM or ternary system, TM is a transition element, LTM is VIIB family and the VIIIB family element in the periodictable, ETM is IVB family to the IVB family element in the periodictable), to the research of multicomponent system amorphous aluminum alloy also seldom.In addition, the amorphous formation ability of aluminum base alloy is limited, and the alloying constituent that forms amorphous is strict, and alloying time is long, and yield rate is lower.Its synthesis technique mainly contains methods such as melt supercooled, solid state reaction, and product mostly is strip or powdered material, and directly synthesizing of block materials is also very difficult, thereby has seriously limited its widespread use.Therefore how the appropriate design alloying constituent, improve aluminum base alloy amorphous formation ability, overcome the deficiency of existing technology of preparing, obtaining large size multicomponent system amorphous aluminum alloy is current urgent problem.
(3) summary of the invention
The object of the present invention is to provide the aluminum base Al-Cu-Zn-Sn quaternary system block amorphous alloy of a kind of hardness height, thermostability and excellent corrosion resistance; The present invention also aims to provide a kind of preparation method of aluminum base Al-Cu-Zn-Sn quaternary system block amorphous alloy.
The objective of the invention is to be achieved through the following technical solutions:
Non-crystaline amorphous metal structural formula provided by the invention is (Al
0.7Cu
0.3)
100-x-yZn
xSn
y, wherein x is a Zn atoms of elements percentage ratio, 30≤x≤31; Y is a Sn atoms of elements percentage ratio, 5≤y≤10.
The invention provides a kind of preparation method of above-mentioned aluminum base Al-Cu-Zn-Sn quaternary system block amorphous alloy, concrete steps are as follows:
Step 1: in high temperature box type resistance furnace, component Al and Cu are mixed fusing, obtain the binary alloy ingot casting after the cooling by mass ratio 1: 1;
Step 2:, press nominal composition (Al then with the binary alloy ingot casting mechanical disintegration that step 1 obtains
0.7Cu
0.3)
100-x-yZn
xSn
y, wherein the proportioning of 30≤x≤31,5≤y≤10 takes by weighing raw material;
Step 3: melting (Al in the crucible type resistance furnace
0.7Cu
0.3)
100-x-yZn
xSn
yAlloy stirs 3～4 times at least repeatedly, and is even to guarantee alloy melting;
Step 4: the molten state (Al that step 3 is obtained
0.7Cu
0.3)
100-x-yZn
xSn
yAlloy adopts simple copper mold casting method to be prepared into bulk amorphous alloys;
Step 5: adopt X-ray diffraction method to characterize the weave construction of gained sample; Utilize the hardness value of HXS-1000Z type hardness tester instrumentation amount sample to characterize its mechanical property.
The advantage that the present invention has is:
(1) adds the Sn element and help improving the amorphous formation ability (GFA) of alloy, thereby can prepare the non-crystaline amorphous metal of large-size;
(2) adopt simple copper mold casting method, just formed the Al-Cu-Zn-Sn quaternary system block amorphous alloy of high rigidity, thermostability and excellent corrosion resistance.These excellent properties that this system non-crystaline amorphous metal has will make it become a kind of new metallic material with wide application prospect.
(4) description of drawings
Fig. 1 is the XRD figure of Al-Cu-Zn-Sn quaternary system block amorphous alloy provided by the invention;
Fig. 2 is the hardness value histogram of Al-Cu-Zn-Sn quaternary system block amorphous alloy provided by the invention.
(5) embodiment
Embodiment 1
This embodiment adopts copper mold casting method successfully to prepare the Al of diameter 5mm
45Cu
19Zn
31Sn
5Bulk amorphous alloys.
Step 1: with purity is that 99.98% high-purity block tin, purity are 99.99% the high-purity spelter and the aluminum-copper alloy (mass percent of copper is 50%) of melting, by composition proportion Al
45Cu
19Zn
31Sn
5Take by weighing raw material;
Step 2: in the crucible type resistance furnace, it was melted fully in 1 hour in 750 ℃ of heating aluminum-copper alloy and high-purity spelter, add the high-purity block tin that has weighed up then, utilize the heat of molten metal self that high-purity block tin is melted, treat to be stirred to rapidly after it melts fully and mix;
Step 3: the molten metal of molten state is cast in the copper mold die cavity that adds cooled with liquid nitrogen, thereby prepares the Al of diameter 5mm
45Cu
19Zn
31Sn
5Bulk amorphous alloys;
Step 4: adopt X-ray diffraction method to characterize this bulk amorphous alloys structures of samples, as shown in Figure 1;
Step 5: utilize the hardness value of HXS-1000Z type hardness tester instrumentation amount sample, as shown in Figure 2.
This embodiment adopts copper mold casting method successfully to prepare the Al of diameter 5mm
42Cu
18Zn
30Sn
10Bulk amorphous alloys.
Step 1: with purity is that 99.98% high-purity block tin, purity are 99.99% the high-purity spelter and the aluminum-copper alloy (mass percent of copper is 50%) of melting, by composition proportion Al
42Cu
18Zn
30Sn
10Take by weighing raw material;
Step 2: in the crucible type resistance furnace, it was melted fully in 1 hour in 750 ℃ of heating aluminum-copper alloy and high-purity spelter, add the high-purity block tin that has weighed up then, utilize the heat of molten metal self that high-purity block tin is melted, treat to be stirred to rapidly after it melts fully and mix;
Step 3: the molten metal of molten state is cast in the copper mold die cavity that adds cooled with liquid nitrogen, thereby prepares the Al of diameter 5mm
42Cu
18Zn
30Sn
10Bulk amorphous alloys;
Step 4: adopt X-ray diffraction method to characterize this bulk amorphous alloys structures of samples, as shown in Figure 1;
Step 5: utilize the hardness value of HXS-1000Z type hardness tester instrumentation amount sample, as shown in Figure 2.
Claims (2)
1, a kind of aluminum base Al-Cu-Zn-Sn quaternary system block amorphous alloy is characterized in that: the structural formula of this non-crystaline amorphous metal is (Al
0.7Cu
0.3)
100-x-yZn
xSn
y, wherein x is a Zn atoms of elements percentage ratio, 30≤x≤31; Y is a Sn atoms of elements percentage ratio, 5≤y≤10.
2, aluminum base Al-Cu-Zn-Sn quaternary system block amorphous alloy according to claim 1 is characterized in that: it is the Al of diameter 5mm
42Cu
18Zn
30Sn
10Bulk amorphous alloys.
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| CN200810064805A CN100580127C (en) | 2008-06-25 | 2008-06-25 | Aluminum base Al-Cu-Zn-Sn quaternary system block amorphous alloy |
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| CN200810064805A CN100580127C (en) | 2008-06-25 | 2008-06-25 | Aluminum base Al-Cu-Zn-Sn quaternary system block amorphous alloy |
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| CN100580127C true CN100580127C (en) | 2010-01-13 |
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| CN104178706B (en) * | 2014-09-01 | 2016-08-24 | 大连理工大学 | There is the Al bast block metal glass alloy containing Er between big supercooling liquid phase region |
| CN113088725A (en) * | 2021-03-29 | 2021-07-09 | 东南大学 | Preparation method of aluminum-based bulk amorphous alloy |
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