CN102886618A - Aluminum-magnesium alloy welding wire for improving Mn content - Google Patents
Aluminum-magnesium alloy welding wire for improving Mn content Download PDFInfo
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- CN102886618A CN102886618A CN2012103988112A CN201210398811A CN102886618A CN 102886618 A CN102886618 A CN 102886618A CN 2012103988112 A CN2012103988112 A CN 2012103988112A CN 201210398811 A CN201210398811 A CN 201210398811A CN 102886618 A CN102886618 A CN 102886618A
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Abstract
The invention discloses an aluminum-magnesium alloy welding wire for improving the Mn content. The aluminum-magnesium alloy welding wire is characterized in that the Mn content in the welding wire is improved by 1.0-2.0 wt%; if calculated in percentage by weight, the other chemical components of the welding wire comprise 4.5-5.5% of Mg, less than or equal to 0.15% of Si, less than or equal to 0.25% of Fe, less than or equal to 0.15% of Cr, less than or equal to 0.15% of Ti, less than or equal to 0.10% of Cu, less than or equal to 0.10% of Zn and less than or equal to 0.15% of Zr; and the balance are Al and inevitable impurity elements. The optimal addition quantity of Mn in the welding wire is 1.5 wt%. Because the Mn content in the aluminum-magnesium alloy welding wire provided by the invention is reached about the maximum solubility of Mn in a solid solution in an aluminum-magnesium alloy phase diagram, the Mn Al6 dispersoid particle is furthest separated out in the aluminum-magnesium alloy, so that the strength of a welded joint can be improved. After a lot of tests are carried out, compared with Al-5Mg alloy welding wires, such as 5356, 5183 and 5087 welding wires imported from a foreign country, the percentage elongation of the welding joint of the welding wire provided by the invention is approximate to that of the imported welding wires, while the yield strength and the tensile strength of the welding wire provided by the invention are improved and are more approximate to the level of an aluminum-magnesium alloy base metal.
Description
Technical field
The invention belongs to take the composition of material and character as the technical field of the scolder that is used for welding of feature, be specifically related to a kind of manganese content Al-Mg alloy welding wire higher than similar scolder.
Background technology
Aluminium alloy element is in actual applications much by welding forming, and requirement was not strengthened heat treatment and directly use after wherein great majority welded, and the weld seam that therefore usually requires aluminium alloy welding wire to weld does not preferably need to strengthen heat treatment namely higher intensity, plasticity and corrosion stability.(namely 5 * * * line aluminium alloy) near the requirement of above-mentioned combination property because almag, thus now widely used aluminium alloy welding wire be 5 * * * be Al-Mg alloy welding wire.Differ larger but the intensity of existing Al-Mg alloy welding wire postwelding weld seam is still low with substrate intensity, can not give full play to the mechanical property potentiality of base material, need not to strengthen heat treatment in the urgent need to exploitation and just can make weld seam obtain the aluminium alloy welding wire of better combination property.
Owing in almag, add a small amount of manganese, form the remarkable crystal grain thinning of disperse phase, not only can improve alloy plasticity, play and replenish the effect of strengthening, but also can improve welding performance.So just the someone considers in almag and to add manganese as welding wire, but the addition of Tong Chang Manganese is all seldom, and is most below 0.8wt%, the highest 1.2wt% that also is no more than.(application number: the manganese content 200710025257.2) is 0.03～0.20wt% such as Chinese patent application case " welding wire prepared from aluminum alloy in use for welding "; (application number: manganese content is 0.05～0.20wt%. to Chinese patent application case " high-performance aluminium alloy automatic welding wire " 201210146910.1); (application number is: the manganese content 200910244555.X) is Chinese patent application case " a kind of high strength aluminum alloy welding wire and preparation method thereof ": 0.1～0.2wt%.Even if the manganese content in the Chinese patent of Japanese kobe steel Co., Ltd. " aluminium alloy welding wire " (patent No. is 02159361.2) is 0.01～1.2wt%, also only reach 1.2wt%.
Why so few the addition of manganese is in the above-mentioned patent, and estimation is because they are conceived to aluminium manganese binary system phase diagram, and when 658 ℃ of eutectic temperatures, the maxima solubility of manganese in αsolidsolution only is 1.82wt%.Traditional idea is fettering everybody, so that they dare not add more manganese element, the performance of being in fear of to have influence on mutually because the thick Mn of containing occurring weld seam in almag.
Summary of the invention
The objective of the invention is in order to seek that a kind of postwelding does not need to heat-treat and the Al-Mg alloy welding wire that still has higher intensity, percentage elongation and corrosion stability.For this reason, we still start with from further investigation aluminium Manganese binary phase diagraml, and manganese and aluminum binary system are typical eutectic phasors, and manganese can stop the recrystallization process of aluminium alloy, improves its recrystallization temperature, and can remarkable its crystal grain of refinement.Its effect mainly is to pass through MnAl
6Dispersoid particle to the recrystal grain of the aluminium inhibition of having grown up.On the other hand, we study MnAl
6During the separating out of particle, find that it not only can hinder the almag grain growth; Also can play invigoration effect (dispersion-strengtherning) to almag; And its negative potential is owing to very approaching with the negative potential of alloy matrix aluminum, even there is superfluous MnAl
6Phase can guarantee that also it has good corrosion resistance; Weld seam is that scolder fast thawing and chilling form the MnAl in the alloy in addition
6Mutually tiny.Therefore, even if in improving alloy in the situation of manganese content, the combination property of almag can not be affected yet.
From above-mentioned design, we are through a large amount of tests, finally the Al-Mg alloy welding wire that has found a kind of postwelding not need to heat-treat with the method that improves manganese content and still had higher intensity, percentage elongation and corrosion stability has been realized the purpose that we expect.
The invention provides a kind of Al-Mg alloy welding wire of the Mn of raising content, it is characterized in that: the Mn content in the welding wire is risen to 1.0～2.0wt%, and remaining chemical composition of welding wire is by weight percentage: Mg:4.5～5.5; Si :≤0.15; Fe :≤0.25; Cr :≤0.15; Ti :≤0.15; Cu :≤0.10; Zn :≤0.10; Zr :≤0.15; Surplus is Al and inevitable impurity element.
The Al-Mg alloy welding wire of raising Mn content of the present invention, it is 1.5% that the optimal addn of its manganese content is calculated by weight percentage.
Because the content of manganese in the welding wire of almag, be in the alumal phasor about the maxima solubility of manganese in αsolidsolution, it can separate out MnAl to greatest extent in almag
6Dispersoid particle, thus weld strength can be improved.Carried out a large amount of tests through us, with its with the Al-5Mg alloy welding wire of external import such as 5356; The contrast of 5183 and 5087 welding wires, its tensile property is as shown in table 1:
Table 1 weld bond tensile property table
| Alloy | Yield strength MPa | Tensile strength MPa | Percentage elongation |
| Mother metal (the thick 5083 annealing sheet materials of 3mm) | 155.0 | 314.2 | 22.4％ |
| The weld seam of soldering wire alloy welding of the present invention | 146.0 | 300.9 | 15.2％ |
| The weld seam of import 5356 soldering wire alloys welding | 110 | 240 | 17％ |
| The weld seam of import 5183 soldering wire alloys welding | 125 | 275 | 17％ |
| The weld seam of import 5087 soldering wire alloys welding | 125 | 275 | 17％ |
By the data in the upper table as seen: the mechanical property of its weld seam of welding wire of the present invention is compared with the similar welding wire of import, and percentage elongation approaches, but yield strength, tensile strength all increase, more near the level of almag mother metal.
We also carry out a large amount of tests to welding wire weld seam bending property of the present invention, test adopt international standards (ISO058173:2000(E)) ［ failure test of metal material weld seam---bend test ］ carries out, sample all occurs without cracking phenomena, the plastic deformation performance (bending property) that weld seam is described is good, meets the quality requirement of aluminium alloy welding wire.
We are also to the weld seam of welding wire of the present invention, according to national technical standard GB/T7998-2005[aluminium alloy grain boundary corrosion assay method] carried out test, its result is identical with the performance of 5356 welding wires of import.
Innovative point of the present invention embodies and to be to break through the traditional concept that manganese content in almag (5 * * * series) welding wire is no more than 1.2wt%, manganese content is brought up to about the maxima solubility of manganese in αsolidsolution, i.e. 1.0～2.0wt%.Take full advantage of MnAl
6Invigoration effect improve the intensity of weld seam, and improve its corrosion resisting property.
The specific embodiment
The below will be further described and replenish content of the present invention in the mode of embodiment.
Take the high-purity Al of 99.99wt% and intermediate alloy Al-10wt%Mn, Al-4wt%Cr, Al-4wt%Ti as raw material, smelting technology deposite metal raw material routinely, stir, skim, slagging-off, degasification, static after, it is the semicontinuous ingot casting of 110mm that semi-continuous casting becomes diameter, after processing, 495 ℃ of homogenising strip off the skin, 460 ℃ add and are hot extruded into the line base that diameter is 10mm (extrusion ratio 38%), through twice 450 ℃ of intermediate annealings with diameter be the wire rod rolling of 10mm to become diameter be the line base of 3.8mm, be drawn into again the welding wire product that diameter is 3.3mm at last.
After diameter is the welding wire surface cleaning of 3.3mm, take thick 5083 aluminum alloy plate materials of 3mm as base material, reserve the narrow crack of 2mm, adopt TIG weldering welding forming, again weld seam is polished by national standard stretch, bending and stress corrosion (cracking) test.
We choose some typical stoicheiometries and produce many batches of welding wires and carried out corresponding performance test to adopt above-mentioned technique, and its result is as follows:
Embodiment 1
Adopt composition (calculating by weight percentage) for 1.5Mn, 4.5Mg ,≤0.15Si ,≤0.25Fe ,≤0.15Cr ,≤0.15Ti ,≤0.10Cu ,≤0.10Zn ,≤0.15Zr, surplus are Al and the inevitable weld seam than the welding wire welding of high Mn content of impurity element, tensile mechanical properties can reach tensile strength=300.9MPa, yield strength 〉=146.0MPa, percentage elongation=15.2%, and bending property and anti-stress corrosion performance all with adopt coming to the same thing of 5356 aluminium alloy welding wires welding.
Embodiment 2
Adopt composition (calculating by weight percentage) for 1.0Mn, 5.5Mg ,≤0.15Si ,≤0.25Fe ,≤0.15Cr ,≤0.15Ti ,≤0.10Cu ,≤0.10Zn ,≤0.15Zr, surplus are Al and the inevitable weld seam than the welding wire welding of high Mn content of impurity element, tensile mechanical properties can reach tensile strength=300.7MPa, yield strength=144.8MPa, percentage elongation=15.2%, and bending property and anti-stress corrosion performance all with adopt coming to the same thing of 5356 aluminium alloy welding wires welding.
Embodiment 3
Adopt composition (calculating by weight percentage) for 2.0Mn, 5.0Mg ,≤0.15Si ,≤0.25Fe ,≤0.15Cr ,≤0.15Ti ,≤0.10Cu ,≤0.10Zn ,≤0.15Zr, surplus are Al and the inevitable weld seam than the welding wire welding of high Mn content of impurity element, tensile mechanical properties can reach tensile strength=302.0MPa, yield strength=147.3MPa, percentage elongation=14.7%, and bending property and anti-stress corrosion performance all with adopt coming to the same thing of 5356 aluminium alloy welding wires welding.
Embodiment 4
Adopt composition (calculating by weight percentage) for 1.3Mn, 5.2Mg ,≤0.15Si ,≤0.25Fe ,≤0.15Cr ,≤0.15Ti ,≤0.10Cu ,≤0.10Zn ,≤0.15Zr, surplus are Al and the inevitable weld seam than the welding wire welding of high Mn content of impurity element, tensile mechanical properties can reach tensile strength=300.9MPa, yield strength=146.2MPa, percentage elongation=15.2%, and bending property and anti-stress corrosion performance all with adopt coming to the same thing of 5356 aluminium alloy welding wires welding.
We emphasize again: creativeness of the present invention is embodied in has abolished the traditional concept that manganese content in the Al-Mg alloy welding wire is no more than 1.2Wt%, manganese content in the Al-Mg alloy welding wire has been brought up to about the maxima solubility 1.82wt% of manganese in αsolidsolution, and it can separate out MnAl to greatest extent in almag
6Dispersoid particle, thus weld strength improved, and obtained thus that a kind of postwelding does not need to heat-treat and the Al-Mg alloy welding wire that still has higher intensity, percentage elongation and corrosion stability.As long as manganese content surpasses more than the 1.2wt% in the Al-Mg alloy welding wire, just will be considered as having invaded patent legitimate rights and interests of the present invention.
Claims (2)
1. Al-Mg alloy welding wire that improves Mn content, it is characterized in that: the Mn content in the welding wire is risen to 1.0～2.0wt%, and remaining chemical composition of welding wire is by weight percentage: Mg:4.5～5.5; Si :≤0.15; Fe :≤0.25; Cr :≤0.15; Ti :≤0.15; Cu :≤0.10; Zn :≤0.10; Zr :≤0.15; Surplus is Al and inevitable impurity element.
2. by the Al-Mg alloy welding wire of raising Mn content claimed in claim 1, it is characterized in that: the optimal addn of said manganese content is 1.5wt%.
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103286472A (en) * | 2013-05-21 | 2013-09-11 | 辽宁石油化工大学 | Novel aluminum alloy welding wire and application thereof |
| CN104785950A (en) * | 2015-04-15 | 2015-07-22 | 北京工业大学 | Al-Mg-Sc welding wire for aluminum alloy laser welding |
| CN105710569A (en) * | 2016-04-12 | 2016-06-29 | 兰州威特焊材科技股份有限公司 | Preparation method for high-purity CRRCSAL5183G aluminum-magnesium alloy TIG/MIG welding wire special for high-speed rail train |
| CN106282687A (en) * | 2016-07-29 | 2017-01-04 | 安徽飞狐焊业股份有限公司 | A kind of aluminium alloy welding wire of argentiferous and stannum and preparation method thereof |
| CN107081536A (en) * | 2017-05-09 | 2017-08-22 | 安徽飞弧焊业股份有限公司 | A kind of municipal rail train is with antifatigue high toughness Al-alloy welding wire |
| CN108161273A (en) * | 2018-03-06 | 2018-06-15 | 东北大学 | A kind of Al-Mg-Zn-Mn aluminium alloy welding wires and preparation method thereof |
| CN108262576A (en) * | 2018-01-26 | 2018-07-10 | 吴振江 | Aluminium alloy welding wire and its manufacturing method |
| CN108340098A (en) * | 2018-02-08 | 2018-07-31 | 周天国 | A kind of processing technology of 5183 aluminium alloy semi-finished product welding wire |
| JP2018199157A (en) * | 2017-05-29 | 2018-12-20 | 三菱造船株式会社 | Welding method of aluminium alloy |
| CN110666307A (en) * | 2019-10-15 | 2020-01-10 | 上海船舶工艺研究所(中国船舶工业集团公司第十一研究所) | Welding method for single-side welding and double-side forming of aluminum alloy plate |
| CN113088774A (en) * | 2021-03-08 | 2021-07-09 | 上海交通大学 | High-resistance Al-Mg-Mn-Ti aluminum alloy and preparation process thereof |
| CN114393343A (en) * | 2014-01-22 | 2022-04-26 | 伊利诺斯工具制品有限公司 | Aluminum alloy welding consumable and method of metallurgical bonding |
| US11890703B2 (en) | 2010-02-10 | 2024-02-06 | Illinois Tool Works Inc. | Aluminum alloy welding wire |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11890703B2 (en) | 2010-02-10 | 2024-02-06 | Illinois Tool Works Inc. | Aluminum alloy welding wire |
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| CN103286472B (en) * | 2013-05-21 | 2015-12-23 | 辽宁石油化工大学 | A kind of novel aluminum alloy welding wire |
| CN114393343A (en) * | 2014-01-22 | 2022-04-26 | 伊利诺斯工具制品有限公司 | Aluminum alloy welding consumable and method of metallurgical bonding |
| CN104785950A (en) * | 2015-04-15 | 2015-07-22 | 北京工业大学 | Al-Mg-Sc welding wire for aluminum alloy laser welding |
| CN105710569A (en) * | 2016-04-12 | 2016-06-29 | 兰州威特焊材科技股份有限公司 | Preparation method for high-purity CRRCSAL5183G aluminum-magnesium alloy TIG/MIG welding wire special for high-speed rail train |
| CN106282687A (en) * | 2016-07-29 | 2017-01-04 | 安徽飞狐焊业股份有限公司 | A kind of aluminium alloy welding wire of argentiferous and stannum and preparation method thereof |
| CN107081536A (en) * | 2017-05-09 | 2017-08-22 | 安徽飞弧焊业股份有限公司 | A kind of municipal rail train is with antifatigue high toughness Al-alloy welding wire |
| JP2018199157A (en) * | 2017-05-29 | 2018-12-20 | 三菱造船株式会社 | Welding method of aluminium alloy |
| CN108262576A (en) * | 2018-01-26 | 2018-07-10 | 吴振江 | Aluminium alloy welding wire and its manufacturing method |
| CN108340098A (en) * | 2018-02-08 | 2018-07-31 | 周天国 | A kind of processing technology of 5183 aluminium alloy semi-finished product welding wire |
| CN108161273A (en) * | 2018-03-06 | 2018-06-15 | 东北大学 | A kind of Al-Mg-Zn-Mn aluminium alloy welding wires and preparation method thereof |
| CN110666307A (en) * | 2019-10-15 | 2020-01-10 | 上海船舶工艺研究所(中国船舶工业集团公司第十一研究所) | Welding method for single-side welding and double-side forming of aluminum alloy plate |
| CN113088774A (en) * | 2021-03-08 | 2021-07-09 | 上海交通大学 | High-resistance Al-Mg-Mn-Ti aluminum alloy and preparation process thereof |
| CN113088774B (en) * | 2021-03-08 | 2022-04-26 | 上海交通大学 | High-resistance Al-Mg-Mn-Ti aluminum alloy and preparation process thereof |
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