CN102747257B - Rare earth aluminum-magnesium alloy barrier explosion-proof material - Google Patents
Rare earth aluminum-magnesium alloy barrier explosion-proof material Download PDFInfo
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Abstract
A kind of Rare earth aluminum-magnesium alloy barrier explosion-proof material, is made up of following chemical components: Mg0.8 ~ 1.8%, Fe0.3 ~ 0.5% by mass percentage, Si0.3 ~ 0.6%, Mn0.8 ~ 1.8, Cu0.1 ~ 0.2%, Zn0.1 ~ 0.2%, rare earth metal 0.45 ~ 1.0%, surplus is aluminium and inevitable impurity.The present invention, by reasonably designing chemical composition, to aluminum magnesium alloy after rare-earth metal modified, makes aluminum magnesium alloy explosion-proof lamp have intensity high, good toughness, corrosion-resistant, the plurality of advantages such as thermal crack resistant ability is strong.Place this aluminum magnesium alloy explosion-suppressing material in fuel tank after, when run into naked light, electrostatic, shock, thunderbolt and unexpected clash accident time, the burning of flame can be intercepted, slow down the speed of propagation of flame, obvious reduction flame height, prevent container to blast accident, therefore there is good explosion-proof, datonation-inhibition function.
Description
Technical field
The present invention relates to a kind of aluminum magnesium alloy explosion-proof lamp, especially relate to a kind of Rare earth aluminum-magnesium alloy barrier explosion-proof material.
Background technology
Instantly, oil, methane etc. are flammable or inflammable substance have become the indispensable chemical energy source of the mankind, but the transport of these resources or storage but add the danger causing fire and blast.According to pertinent data display, the big fire caused after the fire caused because of flammable or inflammable substance or blast, the more difficult control of more common fire, usually once there is fire alarm or blast, fire-fighting can only do aftermath, to reducing the loss as far as possible.
For the problems referred to above, over nearly 20 years, research staff both domestic and external successively specializes in explosion-proof, the explosion-suppressing material for flammable or inflammable substance, and achieves some achievements.The explosion-suppressing material for combustible and explosive articles (China Patent Publication No. 1077172, material composition disclosed in it is: Mn0.8 ~ 1.8, Fe0.3 ~ 0.7, Si0.3 ~ 0.6, Cu0.1 ~ 0.2, Zn0.1, Mg0.03 ~ 0.1, surplus are Al) as No.52 Inst., Ministry of Chinese Weapons Industry's research and development is just made up of the extraordinary alloy foil net after joint-cutting also expansion.This material is divided into netted and spherical two kinds of explosion-suppressing materials, has cellular vesicular structure.If use this material to fill volatile inflammable liquid storage vessel, if fill proper, even if when reaching most high-explosive condition in storage vessel, also brisance (detonation pressure peak) can be reduced, container is interior by after effectively datonation-inhibition requirement filling lightweight explosion-suppressing material simultaneously, and container net volume rate of loss is only 1.2 ~ 1.4%.The principle of its Separated explosion-proof is: because the mesh in explosion-suppressing material lamination has cellular vesicular structure, fuel tank inner chamber can be divided into many very little " compartment ".These " compartments " can contain flame transmission, meanwhile, utilize the heat-conduction effect of its material, promptly burning can be discharged most heat absorption and fall.Outlet temperature Tf after combustion reactions is reduced greatly, and the degrees of expansion of reactant gases reduces, and the force value of container increases not quite.
But so far, such aluminum magnesium alloy explosion-suppressing material is not at home and abroad promoted the use of preferably.Its reason is: existing aluminum magnesium alloy intensity, unit elongation limited capacity, and the fragment easily produced in use procedure consequently blocks oil circuit.And because explosion-proof lamp long period of soaking is in inflammable and explosive substances medium, easily cause hydronalium to corrode.In addition, in the high temperature and high pressure environment of material when firing, it is high temperature resistant, thermal crack resistant and strength property desirable not enough.Exactly because existing aluminum magnesium alloy explosion-suppressing material also exists a lot of deficiency, cause its range of application not extensive.
Summary of the invention
The object of this invention is to provide a kind of Rare earth aluminum-magnesium alloy barrier explosion-proof material, not corrosion-resistant to solve existing aluminum magnesium alloy explosion-proof lamp, intensity, unit elongation, the technical problem that high temperature resistant, heat crack resistance is limited.
Above-mentioned technical problem of the present invention is mainly solved by following technical proposals: a kind of Rare earth aluminum-magnesium alloy barrier explosion-proof material, it is made up by mass percentage of following chemical components: Mg0.8 ~ 1.8%, Fe0.3 ~ 0.5%, Si0.3 ~ 0.6%, Mn0.8 ~ 1.8, Cu0.1 ~ 0.2%, Zn0.1 ~ 0.2%, rare earth metal 0.45 ~ 1.0%, surplus is aluminium and inevitable impurity.
As preferably, in instant component: the concrete component of rare earth metal is: Y, Ce, La, Sc; Wherein each element accounts for the per-cent of material total mass and is: Y0.1 ~ 0.2%, Ce0.1 ~ 0.2%, La0.2 ~ 0.5%, Sc0.05 ~ 0.1%.
Rare earth metal has strengthening, rotten, cleaning action in aluminum magnesium alloy explosion-proof lamp, can fall low-alloyed solidus curve, effectively reduce hot vulnerable areas.In aluminum magnesium alloy liquation, add 0.45 ~ 1.0wt% rare earth metal, Absorbable rod is a part of hydrogen wherein, thus obviously can reduce the pin hole caused because of the hydrogen of separating out in aluminum magnesium alloy process of setting.The aluminum magnesium alloy stoped is oxidized at 600 ~ 760 DEG C of temperature.Add the metallic compound that rare earth metal also can make the equal formation of microalloy such as FeAl, AlFeSi in aluminum magnesium alloy polynary, make iron phase refinement thick in aluminum magnesium alloy and even nodularization, make silicon change into fine strip shape and particulate state by thick sheet, thus significantly improve the mechanical property of aluminum magnesium alloy explosion-proof lamp.
Specifically, in the rare earth metal that will add required for the present invention, La(lanthanum) to the nonmetallic impuritys such as removal oxygen, sulphur, phosphorus and the effect of the low melting point metal such as lead, tin impurity the most obvious, and can also crystal grain thinning.Generate LaAl, La(CuAl) etc. intermetallic compound play a part strengthen crystal boundary, thus reduce hot cracking tendency.
Y(yttrium) there is excellent anti-decaying spheroidisation effect, be the excellent scavenging agent in aluminum magnesium alloy explosion-proof lamp and property-modifying additive, the aluminum magnesium alloy explosion-proof lamp adding yttrium has good high-temperature oxidation resistance.
Ce(cerium) with aluminum magnesium alloy in many elements forms the intermetallic compounds such as AlCuCe, AlSiCe, intermetallic compound is at high temperature very stable, hardness high and be net distribution in crystal boundary, creep slippage can be hindered, thus serve the effect of High-Temperature Strengthening.The intensity of alloy and hardness are improved, and when Fuel explosion burns, the hot tearing that aluminum magnesium alloy explosion-proof lamp produces can be reduced, the resistance to elevated temperatures of aluminum magnesium alloy explosion-proof lamp is further improved.Sc(scandium) come compared with yttrium and lanthanum element, although consumption is less, effect is obviously.The scandium of little amount adds in aluminum magnesium alloy explosion-proof lamp, just can improve the intensity of aluminum magnesium alloy explosion-proof lamp in high temperature, high pressure extreme environment and resistance toheat further.
The present invention, by reasonably designing chemical composition, to aluminum magnesium alloy after rare-earth metal modified, makes aluminum magnesium alloy explosion-proof lamp have intensity high, good toughness, corrosion-resistant, the plurality of advantages such as thermal crack resistant ability is strong.Place this aluminum magnesium alloy explosion-suppressing material in fuel tank after, when run into naked light, electrostatic, shock, thunderbolt and unexpected clash accident time, the burning of flame can be intercepted, slow down the speed of propagation of flame, obvious reduction flame height, prevent container to blast accident, therefore there is good explosion-proof, datonation-inhibition function.This material has anodic protection function simultaneously, prevents the corrosion of container inner wall, extends the container life-span.The explosion-proof of fuel transport car, the flowing fuel tank such as fuel truck, aircraft gas refueller, military vehicle, aircraft, naval vessels or oil tank can be widely used in.Also can be used for the explosion-proof of the inflammable and explosive containers such as various storage gasoline, diesel oil, lacquer thinner, acetone.
Embodiment
Below by embodiment, technical scheme of the present invention is described in further detail.
Embodiment 1: first aluminium, magnesium and other alloying element are smelted into alloy cast ingot, the element components of ingot casting and mass percent are: Mg0.8%, Fe0.3%, Si0.6%, Mn1.8, Cu0.1%, Zn0.2%, the concrete component of rare earth metal 0.45%(: Y0.1%, Ce0.1%, La0.2%, Sc0.05%), surplus is aluminium and inevitable impurity.Then ingot rolling is become 0.05 ~ 0.01mm rare-earth-Al-Mg alloy paper tinsel, send into grooving machine joint-cutting, then send into net puller and be drawn into grid-shaped metal thin slice.
Embodiment 2: first aluminium, magnesium and other alloying element are smelted into alloy cast ingot, the element components of ingot casting and mass percent are: Mg1.8%, Fe0.5%, Si0.5%, Mn1.6, Cu0.2%, Zn0.1%, the concrete component of rare earth metal 0.50%(: Y0.1%, Ce0.1%, La0.2%, Sc0.1%), surplus is aluminium and inevitable impurity.Then ingot rolling is become 0.05 ~ 0.01mm rare-earth-Al-Mg alloy paper tinsel, send into grooving machine joint-cutting, then send into net puller and be drawn into grid-shaped metal thin slice.
Embodiment 3: first aluminium, magnesium and other alloying element are smelted into alloy cast ingot, the element components of ingot casting and mass percent are: Mg1.2%, Fe0.4%, Si0.5%, Mn1.2, Cu0.15%, Zn0.15%, the concrete component of rare earth metal 0.77%(: Y0.15%, Ce0.15%, La0.4%, Sc0.07%, surplus is aluminium and inevitable impurity.Then ingot rolling is become 0.05 ~ 0.01mm rare-earth-Al-Mg alloy paper tinsel, send into grooving machine joint-cutting, then send into net puller and be drawn into grid-shaped metal thin slice.
Embodiment 4: first aluminium, magnesium and other alloying element are smelted into alloy cast ingot, the element components of ingot casting and mass percent are: Mg1.4%, Fe0.3%, Si0.5%, Mn1.6, Cu0.1%, Zn0.1%, the concrete component of rare earth metal 0.88%(: Y0.1%, Ce0.2%, La0.5%, Sc0.08%, surplus is aluminium and inevitable impurity.Then ingot rolling is become 0.05 ~ 0.01mm rare-earth-Al-Mg alloy paper tinsel, send into grooving machine joint-cutting, then send into net puller and be drawn into grid-shaped metal thin slice.
Embodiment 5: first aluminium, magnesium and other alloying element are smelted into alloy cast ingot, the element components of ingot casting and mass percent are: Mg1.6%, Fe0.5%, Si0.5%, Mn1.3, Cu0.2%, Zn0.2%, the concrete component of rare earth metal 0.66%(: Y0.2%, Ce0.1%, La0.3%, Sc0.06%, surplus is aluminium and inevitable impurity.Then ingot rolling is become 0.05 ~ 0.01mm rare-earth-Al-Mg alloy paper tinsel, send into joint-cutting joint-cutting, then send into net puller and be drawn into grid-shaped metal thin slice.
Comparative example 1: existing aluminum magnesium alloy explosion-proof lamp.The element components of this explosion-proof lamp and mass percent are: Mg1.0%, Fe0.3%, Si0.5%, Mn1.0, Cu0.2%, Zn0.2%, Al surplus.
Comparative example 2: existing aluminum magnesium alloy explosion-proof lamp.The element components of this explosion-proof lamp and mass percent are: Mn1.0, Fe0.06, Si0.15, Cu0.3, Zn0.06, Mg1.0, Cr0.07, Al surplus.
In order to verify effect of the present invention, rare-earth-Al-Mg alloy explosion-proof lamp (directly adopt rare-earth-Al-Mg alloy paper tinsel make) prepared by embodiment 1 ~ 5 and " dog bone " shape test sample made respectively by comparative example 1,2 aluminum magnesium alloy explosion-proof lamp, and (namely bare terminal end width in both sides is greater than test section; Test section width is 6mm, long 20mm; Both sides bare terminal end width 30mm, long 20mm), detect respectively test sample, its result is as follows.
One. Mechanics Performance Testing:
(production of Jiangdu Tian Yuan test machines company limited) test on 50-5000N electronic universal tester by each test sample, its experimental result is as shown in table 1:
Table 1: Mechanics Performance Testing
| Sample | Tensile strength N/mm 2 | Yield strength N/mm 2 | Unit elongation % |
| Embodiment 1 | 207 | 182 | 37.8 |
| Embodiment 2 | 211 | 185 | 38.2 |
| Embodiment 3 | 219 | 189 | 37.5 |
| Embodiment 4 | 213 | 186 | 38.5 |
| Embodiment 5 | 215 | 180 | 38.1 |
| Comparative example 1 | 165 | 132 | 31.3 |
| Comparative example 2 | 170 | 137 | 29.5 |
As can be seen from the above table, as can be seen from Table 2, after the present invention adds Y, Ce, La, Sc thulium, the tensile strength of material, yield strength, unit elongation are greatly improved.
Two. accelerated corrosion test: perform according to the standard of ASTMG85-98 salt mist experiment.Get the sodium chloride salt aqueous solution that quality solubility is 5%, add Glacial acetic acid and solution ph is regulated 3.1 ~ 3.3; Test temperature is 35 DEG C, and test specimen becomes 45 DEG C of angles with vertical direction, the rate of descent of salt fog is between 1 ~ 2ml/80cm2h.Spraying terminates rear taking-up test piece, washes rapidly, and remove the salt be bonded on strip, can not damage effective surface, then each test sample weight loss is measured in air seasoning.Its experimental result is as shown in table 2:
Table 2: salt air corrosion simultaneous test
As can be seen from the above table, after the present invention adds Y, Ce, La, Sc thulium, the corrosion resistance nature of material is greatly improved.
Three. the detection of corrosion sample mechanical property:
Will speed up (production of the Jiangdu Tian Yuan test machines company limited) test on 50-5000N electronic universal tester of each test sample after corrosion test, its experimental result is as shown in table 3:
Table 3: the detection of corrosion sample mechanical property
As can be seen from the above table, even if after the present invention carries out accelerated corrosion test, its mechanical property is still higher than the test sample after the accelerated corrosion test of comparative example 1 ~ 2.
Application examples: in order to verify effect of the present invention further, contriver selects east wind sky dragon 25 tons of tank wagons two, and the netted rare-earth-Al-Mg alloy material embodiment of the present invention 1,2,3,4 made all is filled in wherein in an oil tank; Reticulated aluminum magnesium alloy materials comparative example 1 made is filled in another tank wagon, application through 18 months by a definite date shows: the tank wagon of the reticulated aluminum magnesium alloy materials adopting the embodiment of the present invention 1,2,3,4 to make is fuel-displaced normally, without fragment to be produced, and metal toughness is better.And the tank wagon of the reticulated aluminum magnesium alloy materials adopting comparative example 1 to make fuel-displaced time, have a small amount of fragment to produce.
Claims (1)
1. a Rare earth aluminum-magnesium alloy barrier explosion-proof material, it is characterized in that it is made up by mass percentage of following chemical components: Mg0.8 ~ 1.8%, Fe0.3 ~ 0.5%, Si0.3 ~ 0.6%, Mn0.8 ~ 1.8, Cu0.1 ~ 0.2%, Zn0.1 ~ 0.2%, rare earth metal 0.45 ~ 1.0%, surplus is aluminium and inevitable impurity;
The concrete component of described rare earth metal is: Y, Ce, La, Sc; Wherein each element accounts for the per-cent of material total mass and is: Y0.1 ~ 0.2%, Ce0.1 ~ 0.2%, La0.2 ~ 0.5%, Sc0.05 ~ 0.1%.
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| CN201110323112.7A CN102747257B (en) | 2011-04-21 | 2011-10-22 | Rare earth aluminum-magnesium alloy barrier explosion-proof material |
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| CN103396025B (en) * | 2013-08-01 | 2016-01-20 | 北京金科复合材料有限责任公司 | A kind of metal rust preventing is misfired anti-static wearable shock resistance earth material and preparation thereof |
| CN105088019A (en) * | 2014-05-08 | 2015-11-25 | 比亚迪股份有限公司 | Aluminum alloy, preparation method thereof, aluminum alloy moulded body, and aluminium alloy surface coloring method |
| CN105734362B (en) * | 2016-04-27 | 2017-12-29 | 贵州航天风华精密设备有限公司 | A kind of almag and its surface modifying method |
| CN115198151B (en) * | 2022-07-21 | 2023-08-18 | 栋梁铝业有限公司 | Aluminum alloy for automobiles and preparation method thereof |
| CN117646138A (en) * | 2024-01-30 | 2024-03-05 | 鸿劲新材料研究(南通)有限公司 | Explosion-proof aluminum alloy material and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1077172A (en) * | 1992-04-03 | 1993-10-13 | 中国兵器工业第五二研究所 | The explosion-suppressing material that is used for combustible and explosive articles |
| CN101486087A (en) * | 2009-02-11 | 2009-07-22 | 江苏大学 | Casting and forging combined technique of aluminum alloy linkage rod |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1077172A (en) * | 1992-04-03 | 1993-10-13 | 中国兵器工业第五二研究所 | The explosion-suppressing material that is used for combustible and explosive articles |
| CN101486087A (en) * | 2009-02-11 | 2009-07-22 | 江苏大学 | Casting and forging combined technique of aluminum alloy linkage rod |
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