CN104018033A - Tin/zinc/manganese-added aluminum-lithium alloy material and production method thereof - Google Patents
Tin/zinc/manganese-added aluminum-lithium alloy material and production method thereof Download PDFInfo
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Abstract
The invention relates to a tin/zinc/manganese-added aluminum-lithium alloy material and a production method thereof. The aluminum-lithium alloy material is composed of the following components in percentage by weight: 1.5-2.5 wt% of tin-zinc-manganese alloy particle, 1.5-2.5 wt% of lithium, 1-2 wt% of copper, 0.05-0.2 wt% of magnesium and the balance of aluminum. The aluminum-lithium alloy material uses cheap tin, zinc and manganese elements instead of the expensive silver element, thereby lowering the cost of the alloy material. The particle powder prepared from the eutectic tin, zinc and manganese elements is dispersed in the aluminum-lithium alloy to enhance the strength and weldability of the alloy material. The production technique is preferably improved: the vacuum smelting technique is utilized to effectively remove hydrogen, sodium, potassium and other impurities and reduce the burning loss of abundant volatile alloy elements, such as lithium, magnesium and the like, thereby avoiding generating component deviation. The aluminum-lithium alloy material can be widely used in the aspects of machine manufacturing, conveying machinery, power machinery, aviation industry and the like.
Description
Technical field
The present invention relates to a kind of Al-Li alloy material and production method thereof, particularly relate to a kind of Al-Li alloy material and production method thereof of adding tin zinc-manganese.
Background technology
Aluminium alloy is a most widely used class non-ferrous metal structured material in industry, in Aeronautics and Astronautics, automobile, machinofacture, boats and ships and chemical industry, widely applies.Along with the develop rapidly of science and technology and industrial economy in recent years, increasing to the demand of aldural welding structural element.
Because aluminium alloy density is low, but strength ratio is higher, approaches or surpasses high-quality steel, and plasticity is good, can be processed into various section bars, has good electroconductibility, thermal conductivity and corrosion stability, industrial being widely used, and usage quantity is only second to steel.
New research direction as aluminium alloy---Al-Li alloy has low density, high specific strength and specific rigidity, good low-temperature performance and erosion resistance and the good advantages such as superplasticity.With Al-Li alloy, replace conventional aluminium alloy and can make texture quality alleviate 10%～15%, rigidity improves 15%～20%, is a kind of desirable aerospace structure material.Owing to often adopting the form of linker between space structure part, by weldprocedure, replace traditional rivetstructure can alleviate texture quality, reduce time of setting-up, therefore, the weldability of Al-Li alloy is had higher requirement.
The Reynolds metal company of the U.S. is cooperated with Martin Maritta company, exploitation Weldlite series aluminum lithium alloy.This series alloy has the feature of high strength weldable, and tensile strength reaches as high as 700MPa; Under multiple weldprocedure, all can form fine and close weld seam, its weld strength and toughness are all apparently higher than other conventional aluminum alloys.Weldalite alloy comprises Weldalite
tM049 and 210 two alloy series, wherein Weldalite
tM049 alloy has higher weldability, its chemical composition and correlated performance all meet the application of aerospace structure material, its chemical composition and correlated performance all meet the application of aerospace structure material, but because it is to improve the welding property of material by adding silver (Ag), therefore also improved the corresponding cost of Al-Li alloy.
To sum up, need at present a kind of not only cost lower, and can guarantee the Al-Li alloy material of alloy correlation intensity and weldability.
Summary of the invention
The object of the invention is to, by improving design of alloy and according to the feature optimized production process of alloy, provide a kind of and improved the intensity of Al-Li alloy, weldability in prior art, reduce each synform and significantly reduce Al-Li alloy material and the production method thereof of material cost.
For achieving the above object, technical scheme provided by the present invention is:
Add an Al-Li alloy material for tin zinc-manganese, by the component of following weight percent, formed: tin manganese alloy particle: 1.5-2.5wt%, lithium: 1.5-2.5wt%, copper: 1-2wt%, magnesium: 0.05-0.2wt%, surplus: aluminium.
Preferably, a kind of Al-Li alloy material that adds tin zinc-manganese, is comprised of the component of following weight percent: tin manganese alloy particle: 2.0wt%, lithium: 2.0wt%, copper: 1.5wt%, magnesium: 0.75wt%, surplus: aluminium.
A kind of production method of adding the Al-Li alloy material of tin zinc-manganese of the present invention, has following steps:
1) each raw metal is mixed in the smelting furnace that seals and rush rare gas element in described ratio, the temperature of the described smelting furnace that raises, melting at 300-310 ℃, smelting time is 2-3 hour;
2) adopt spectroscopic analysis to detect the alloy liquid that melting completes, determine that its composition is within scope;
3) alloy liquid insulation is placed in to vacuum melting furnace melting again after 700 ℃, under the condition of 700 ℃ of temperature, 500-2000Pa vacuum tightness, vacuum melting 20 minutes;
4) detect hydrogen richness to being less than or equal to massfraction 1 * 10
-7;
5) adopt the mode of continuous casting to produce blank billet;
6) ageing treatment, envrionment temperature is 200-220 ℃, the aging anneal time is 1.5 hours;
7) by the described alloy material stretch forming completing.
Further, it is characterized in that: wherein, for described tin, zinc, the manganese alloy particle of melting, volume ratio is 8:1:1, and grain diameter is more than or equal to 200 μ m, is less than or equal to 600 μ m.
Further, wherein, the alloy material that described annealing is completed is drawn into finished product.
The present invention also provides the purposes of above-mentioned Al-Li alloy material in preparation space flight and aviation structured material.
Adopt technique scheme, beneficial effect of the present invention has:
1, the invention provides a kind of Al-Li alloy material and manufacture method thereof, met low density, high specific strength and specific rigidity, low-temperature performance and erosion resistance to multi-purpose material, superplasticity, high strength, weldability, low each opposite sex and multiple needs cheaply simultaneously.
2, Al-Li alloy material of the present invention, by adopting cheap tin, zinc, manganese element to replace expensive silver element, thus the cost of reduction alloy material.By the improvement of production technique, the integral body that has realized quality of materials to push the mode that replaces repeatedly thermal treatment or forge reduces.
3, the present invention, by the particle powder disperse made from mutual eutectic Xi ﹑ Xin ﹑ manganese element material in the middle of the alloy of lithium and aluminium, has improved intensity and the welding property of alloy material.
4, the present invention is by improving the preparation method of vacuum melting technique, effectively prevent Al-Li alloy melt suction hydrogen, when removing the impurity such as hydrogen sodium potassium, reduce a large amount of scaling loss of the volatile alloying element such as lithium, magnesium in melt, avoid material production composition deviation, and improved the temperature and time of melting.
5, this material is due to lower density and higher intensity, it is a kind of desirable structured material, can be widely used in the aspects such as machinofacture, Transport Machinery, power machine and aircraft industry, such as the link span of interior of aircraft, the union lever of high speed motor car interior etc.
Embodiment
The preparation of embodiment 1 Al-Li alloy material of the present invention
Batching melting: be tin manganese alloy particle: 1.5wt% by weight by each metal, lithium: 2.5wt%, copper: 1.5wt%, magnesium: 0.05wt%, surplus: aluminium rushes in the smelting furnace that has rare gas element and mixes in sealing, the raise temperature of described smelting furnace, melting at 300 ℃, smelting time is 3 hours.
Detect: adopt spectroscopic analysis to detect the alloy liquid that melting completes, determine that its composition is within scope.
Vacuum melting: alloy liquid insulation is placed in to vacuum melting furnace melting again after 700 ℃, under the condition of 700 ℃ of temperature, 500Pa vacuum tightness, vacuum melting 20 minutes.
Hydrogen－sucking amount detects: by chemical processes such as volumetry, weighting methods, detect absorption hydrogen amount to being less than or equal to massfraction 1 * 10
-7.
Casting cold cogging: adopt continuous casting mode, adopt computer control alternating current machine, realize micro-anti-technique that pushes away of journey of drawing, produce large volume heave hand base, mill made-up belt epidermis defect through two-sided milling milling face unit, through cold-rolling mill, cut into this blank billet.
Extrusion molding: ingot blank is made it to flow out from nib in container.
Ageing treatment: adopt artificial aging to process, envrionment temperature is 200 ℃, eliminates internal stress, and the aging anneal time is 1.5 hours.
Scrub aligning: by pickling, scrub operation, remove remained on surface and oxide compound, by aligning operation, eliminate internal stress, alloy material is drawn into finished product.
By the Al-Li alloy material of preparing according to the embodiment of the present invention and isopyknic Weldalite049 contrast, under 20 ℃ of extruded material T6 states, each performance perameter is as shown in table 1:
Table 1
The preparation of embodiment 2 Al-Li alloy material of the present invention
Batching melting: be tin manganese alloy particle: 2.5wt% by weight by each metal, lithium: 1.5wt%, copper: 1.0wt%, magnesium: 0.75wt%, surplus: aluminium rushes in the smelting furnace that has rare gas element and mixes in sealing, the raise temperature of described smelting furnace, melting at 310 ℃, smelting time is 2 hours.
Detect: adopt spectroscopic analysis to detect the alloy liquid that melting completes, determine that its composition is within scope.
Vacuum melting: alloy liquid insulation is placed in to vacuum melting furnace melting again after 700 ℃, under the condition of 700 ℃ of temperature, 1000Pa vacuum tightness, vacuum melting 20 minutes.
Hydrogen－sucking amount detects: by chemical processes such as volumetry, weighting methods, detect absorption hydrogen amount to being less than or equal to massfraction 1 * 10
-7.
Casting cold cogging: adopt continuous casting mode, adopt computer control alternating current machine, realize micro-anti-technique that pushes away of journey of drawing, produce large volume heave hand base, mill made-up belt epidermis defect through two-sided milling milling face unit, through cold-rolling mill, cut into this blank billet.
Extrusion molding: ingot blank is made it to flow out from nib in container.
Ageing treatment: adopt artificial aging to process, envrionment temperature is 220 ℃, eliminates internal stress, and the aging anneal time is 1.5 hours.
Scrub aligning: by pickling, scrub operation, remove remained on surface and oxide compound, by aligning operation, eliminate internal stress, alloy material is drawn into finished product.
By the Al-Li alloy material of preparing according to the embodiment of the present invention and isopyknic Weldalite049 contrast, under 20 ℃ of extruded material T6 states, each performance perameter is as shown in table 2:
Table 2
The preparation of embodiment 3 Al-Li alloy material of the present invention
Batching melting: by each metal, be tin manganese alloy particle: 2.0wt% by weight, lithium: 2.0wt%, copper: 2.0wt%, magnesium: 0.2wt%, surplus: aluminium rushes in the smelting furnace that has rare gas element and mixes in sealing, the temperature of the described smelting furnace that raises, melting at 310 ℃, smelting time is 3 hours.
Detect: adopt spectroscopic analysis to detect the alloy liquid that melting completes, determine that its composition is within scope.
Vacuum melting: alloy liquid insulation is placed in to vacuum melting furnace melting again after 700 ℃, under the condition of 700 ℃ of temperature, 2000Pa vacuum tightness, vacuum melting 20 minutes.
Hydrogen－sucking amount detects: by chemical processes such as volumetry, weighting methods, detect absorption hydrogen amount to being less than or equal to massfraction 1 * 10
-7.
Casting cold cogging: adopt continuous casting mode, adopt computer control alternating current machine, realize micro-anti-technique that pushes away of journey of drawing, produce large volume heave hand base, mill made-up belt epidermis defect through two-sided milling milling face unit, through cold-rolling mill, cut into this blank billet.
Extrusion molding: ingot blank is made it to flow out from nib in container.
Ageing treatment: adopt artificial aging to process, envrionment temperature is 220 ℃, eliminates internal stress, and the aging anneal time is 1.5 hours.
Scrub aligning: by pickling, scrub operation, remove remained on surface and oxide compound, by aligning operation, eliminate internal stress, alloy material is drawn into finished product.
By the Al-Li alloy material of preparing according to the embodiment of the present invention and isopyknic Weldalite049 contrast, under 20 ℃ of extruded material T6 states, each performance perameter is as shown in table 3:
Table 3
Record in above-mentioned different embodiment, under different vacuum tightness during vacuum melting in alloy hydrogen richness lower than 1 * 10
-7time, and material burn out rate, as shown in table 4.
Table 4
The above embodiment has only expressed embodiments of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.
Claims (6)
1. an Al-Li alloy material that adds tin zinc-manganese, is characterized in that, consists of: tin manganese alloy particle: 1.5-2.5wt%, lithium: 1.5-2.5wt%, copper: 1-2wt%, magnesium: 0.05-0.2wt%, surplus: aluminium the component of following weight percent.
2. a kind of Al-Li alloy material that adds tin zinc-manganese according to claim 1, is characterized in that, consists of: tin manganese alloy particle: 2.0wt%, lithium: 2.0wt%, copper: 1.5wt%, magnesium: 0.75wt%, surplus: aluminium the component of following weight percent.
3. according to the production method of adding the Al-Li alloy material of tin zinc-manganese described in claim 1 or 2, it is characterized in that thering are following steps:
1) each raw metal is mixed in the smelting furnace that seals and rush rare gas element in described ratio, the temperature of the described smelting furnace that raises, melting at 300-310 ℃, smelting time is 2-3 hour;
2) adopt spectroscopic analysis to detect the alloy liquid that melting completes, determine that its composition is within scope;
3) alloy liquid insulation is placed in to vacuum melting furnace melting again after 700 ℃, under the condition of 700 ℃ of temperature, 500-2000Pa vacuum tightness, vacuum melting 20 minutes;
4) detect hydrogen richness to being less than or equal to massfraction 1 * 10
-7;
5) adopt the mode of continuous casting to produce blank billet;
6) ageing treatment, envrionment temperature is 200-220 ℃, the aging anneal time is 1.5 hours;
7) by the described alloy material stretch forming completing.
4. the production method of the Al-Li alloy material of interpolation tin zinc-manganese according to claim 3, is characterized in that: wherein, for described tin, zinc, the manganese alloy particle of melting, volume ratio is 8:1:1, and grain diameter is more than or equal to 200 μ m, is less than or equal to 600 μ m.
5. the production method of the Al-Li alloy material of interpolation tin zinc-manganese according to claim 3, is characterized in that:
Wherein, the alloy material described annealing being completed is drawn into finished product.
6. the purposes of the Al-Li alloy material of interpolation tin zinc-manganese according to claim 1 and 2 in preparation space flight and aviation structured material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410263988.0A CN104018033B (en) | 2014-06-13 | A kind of aluminium lithium alloy material adding stannum zinc-manganese and production method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410263988.0A CN104018033B (en) | 2014-06-13 | A kind of aluminium lithium alloy material adding stannum zinc-manganese and production method thereof |
Publications (2)
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| CN104018033A true CN104018033A (en) | 2014-09-03 |
| CN104018033B CN104018033B (en) | 2016-11-30 |
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|---|---|---|---|---|
| CN1878880A (en) * | 2003-10-03 | 2006-12-13 | 阿尔科公司 | Aluminum-copper-magnesium alloys having ancillary additions of lithium |
| CN101967589A (en) * | 2010-10-27 | 2011-02-09 | 中国航空工业集团公司北京航空材料研究院 | Medium-strength high-toughness aluminum lithium alloy and preparation method thereof |
| CN102296218A (en) * | 2011-08-24 | 2011-12-28 | 吴江市精工铝字制造厂 | High-strength heat-resistant magnalium alloy |
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1878880A (en) * | 2003-10-03 | 2006-12-13 | 阿尔科公司 | Aluminum-copper-magnesium alloys having ancillary additions of lithium |
| CN101967589A (en) * | 2010-10-27 | 2011-02-09 | 中国航空工业集团公司北京航空材料研究院 | Medium-strength high-toughness aluminum lithium alloy and preparation method thereof |
| CN102296218A (en) * | 2011-08-24 | 2011-12-28 | 吴江市精工铝字制造厂 | High-strength heat-resistant magnalium alloy |
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| 卢健等: "5A90铝锂合金真空熔炼工艺研究", 《铸造设备与工艺》 * |
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Address after: 215412 Building 11, No. 88, Zhenghe Middle Road, Ludu Town, Taicang City, Suzhou, Jiangsu Province Patentee after: Suzhou Boyuan Aerospace New Materials Co.,Ltd. Address before: 215412 Building 11, No. 88, Zhenghe Middle Road, Ludu Town, Taicang City, Suzhou, Jiangsu Province Patentee before: SUZHOU RICHMOND ADVANCED MATERIAL TECHNOLOGY TRANSFER Co.,Ltd. |
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