CN101073860A - Welding wire of melt welding filling flux for granular enhanced aluminum-based composite material - Google Patents
Welding wire of melt welding filling flux for granular enhanced aluminum-based composite material Download PDFInfo
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- CN101073860A CN101073860A CNA2007100231970A CN200710023197A CN101073860A CN 101073860 A CN101073860 A CN 101073860A CN A2007100231970 A CNA2007100231970 A CN A2007100231970A CN 200710023197 A CN200710023197 A CN 200710023197A CN 101073860 A CN101073860 A CN 101073860A
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Abstract
The invention is concerned with the soldering wire for filling flux that is used for the melting welding of grain reinforcing aluminum group composite material, the relative proportion of each component is: Ti is 5% to 20%; Si is 3% to 7%; Mg is 3% to 7%; Ce or La is 0.5% to 1.5%; the other part is all Al. the invention is with better welding procedure, processes weld with the protecting melting welding of the Ar, He gas, the metal mechanical property of the welding line is high.
Description
Technical field
The present invention relates to novel field of welding material, refer in particular to particle enhanced aluminum-based composite material molten solder alloy welding wire, be mainly used in the molten solder of particle enhanced aluminum-based composite material, adopt the present invention can effectively suppress the formation of needle-like fragility phase in the weld seam, form the intact weld seam of shape, and the generation of minimizing pore, obtain the good mechanical performance.
Background technology
Melting is the welding method that range of application is the widest, adaptability is the strongest, operation is the easiest, technology is the most ripe in the used welding method, and this research direction of the melting of aluminum matrix composite has very high researching value.As finding the breach in this respect, the process of industrialization of aluminum matrix composite will be accelerated greatly, for promoting China's development of science and technology, realizing that Eleventh Five-Year Plan Science ﹠ Technology Objectives, the modernization of national defense have great significance.
At present, there is following problem in the melting of the particle enhanced aluminum-based composite material welding:
1) a large amount of wild phase such as SiC particles are present in the fused solution matrix, and viscous takes place, and matrix material and filler wire material are not fused together, and particularly more serious when SiC content is high, generation is mingled with, and influence normally is shaped; In addition, the molten pool metal of viscous is unfavorable for the diffusion effusion of hydrogen, forms a large amount of pores in the weld seam.
2) wellability between wild phase SiC and the Al matrix is poor, and in the time of need not filling metal, under powerful arc heat effect, Al pushes the edge to from the center, molten bath under the effect of arc force, is not easy to form stable welding pool, and property of welded joint descends.
2) the matrix Al in the composite is very active chemical element, is easy to react with reinforcing material under hot conditions, generates frangible compounds at the interface, as SiC
p/ Al can generate Al
4C
3, be distributed in the SiC interface, weakened the effect of wild phase greatly, reduced the intensity that joint closely stitches the district.
3) wild phase SiC can not become crystallization nuclei in the melting crystal process, is repelled in the center or the melt run place by the crystallization in the weld seam, causes that very easily weld seam center and toe of weld form solidification cracking, and makes and seam organization generation embrittlement layering reduce strength of joint greatly.
4) physical properties such as the thermal conductivity factor of matrices of composite material and wild phase, thermal coefficient of expansion have marked difference, through after the powerful Thermal Cycle, produce a large amount of microcell residual stress on matrix and enhancing body interface, and joint performance is descended.
Seam original position alloyage process welding particle enhanced aluminum-based composite material is that the nearest a kind of feasibility that proposes is than higher method, by adding alloy welding wire, rather than directly weld or add the method for aluminium alloy, at the problem that occurs in the welding process, add corresponding interfacial reaction and suppress element, reduce the active element of the porosity etc., suppressed the generation of harmful interfacial reaction, in weld seam, regenerate new wild phase, significantly reduced the pore quantity of weld seam solidification zone, refinement the enhancing particle, improve the tensile strength of weld seam, obtained the welding point of good mechanical properties.
Seam original position alloying welding particle enhanced aluminum-based composite material needs a kind of welding wire to do packing material, and therefore at the problems referred to above, inventing a kind of welding wire is to realize the aluminum matrix composite key.
Find the at present domestic relevant patent application of appearance as yet through literature search to prior art.
Summary of the invention
The object of the present invention is to provide a kind of welding wire that is applied to the molten solder of particle enhanced aluminum-based composite material, with the harmful interfacial reaction in effective inhibition welding process, form the good weld seam of shape, reduce the generation of pore, improve the mechanical property of seam organization.The present invention makes alloy welding wire with effective alloying element by proportioning.
The particle enhanced aluminum-based composite material melting is with in the welding wire, and the relative proportion (mass fraction) of each composition should be as follows:
Ti：5％～20％；
Choose one or more arbitrarily from Si, Mg, Rare-Earth Ce or La, content should reach separately: Si3%～7%, Mg3%～7%, Rare-Earth Ce or La0.5%～1.5%; All the other Al.
It is Ti:5%～20%; Si3%～7%; All the other Al.
Ti:5%～20%; Mg3%～7%, all the other Al.
Ti:5%～20%; Rare-Earth Ce or La0.5%～1.5%; All the other Al
Ti:5%～20%; Si3%～7%; Mg3%～7%; All the other Al.
Ti:5%～20%; Si3%～7%; Rare-Earth Ce or La0.5%～1.5%; All the other Al.
Ti:5%～20%; Mg3%～7%; Rare-Earth Ce or La0.5%～1.5%; All the other Al.
Ti:5%～20%; Si3%～7%; Mg3%～7%, Rare-Earth Ce or La0.5%～1.5%, all the other Al.
The mass fraction of Ti is preferred 10% in the above-mentioned welding wire, Si, and Mg is preferred 5%, and Rare-Earth Ce or La preferred 1%.
The present invention has the following advantages:
1) this welding wire has good welding procedure, can weld under gas shield meltings such as Ar, He, and the Metal Mechanic Property height is met in weldering, but also have moulding attractive in appearance, splash little, pore-free and advantage such as can comprehensively weld.
2) this welding wire has made full use of the rich rare earth metal of China, be based on domestic, the raw material supply abundance, therefore with low cost, can obtain favorable social and economic benefits.
Description of drawings
The weld seam micro-organization chart of Fig. 1 Comparative Examples 1
The weld seam XRD analysis figure of Fig. 2 Comparative Examples 1
The weld seam micro-organization chart of Fig. 3 embodiment 1
The weld seam XRD analysis figure of Fig. 4 embodiment 1
The specific embodiment
Adopt the welding wire of the present invention, can effectively suppress the harmful interfacial reaction in the welding process, form the intact weld seam of shape, reduce the generation of pore, improve the mechanical property of seam organization as the melting welding of SiCp/Al composite.
In order to obtain these characteristics, the present invention makes alloy welding wire to the above-mentioned element that can improve the weldability of aluminum matrix composite by proportioning.At the problems that exist in the melting of the aluminum matrix composite welding, need to add and have corresponding inhibiting different elements, not only need to adjust the constituent of welding wire, also to control ratio between each composition well.
Comparative Examples 1
To the SiCp/6061 composite, weldering is preceding with 150
#The sand papering mother metal is removed oxide-film, cleans with acetone then.Sample is after 150 ℃ of dryings, and the nitrogen that adopts argon gas+30% is as ion gas, and the gas flow of ions amount is 3L/min, and with the pure argon protection, welding current is 50A, and speed of welding is 150mm/min.Composite is carried out direct butt welding.Weld the back to the welding point sample analysis, analysis-by-synthesis Fig. 1, Fig. 2, as can be seen, the wild phase SiC particle in the weld seam molten bath is dissolving fully in the direct molten solder process of plasma arc, and has separated out a large amount of tiny Al in process of setting subsequently
4C
3, in the weld seam incomplete fusion zone, there are a large amount of thick pores to generate, on electronic universal tester, carry out the test of welding point hot strength, the hot strength of welding point only is 130MPa.
Embodiment 1
To the SiCp/6061 composite, weldering is preceding with 150
#The sand papering mother metal is removed oxide-film, cleans with acetone then.Sample is after 150 ℃ of dryings, and the nitrogen that adopts argon gas+30% is as ion gas, and the gas flow of ions amount is 3L/min, and with the pure argon protection, welding current is 100A, and speed of welding is 150mm/min.Add the Al-10%Ti-5%Mg alloy silk of diameter 1mm in welding process in welding pool, interpolation speed is 200mm/min.Welding back is to the welding point sample analysis, complex chart 3, Fig. 4 as can be seen: the welding point place has formed TiC, TiN, AlN, Al
3Ti, MgAl
2O
4And Mg
3N
2Deng the enhancing particle, the size of particle is below 4 μ m, and even particle distribution, the hot strength of welding point are about 250MPa, satisfy the requirement of strength of welding point.As can be seen from Figure 4, constituent analysis shows that the average content of welding point part Ti, Mg element is 3.12% and 1.62%.
Embodiment 2
To the SiCp/6061 composite, weldering is preceding with 150
#The sand papering mother metal is removed oxide-film, cleans with acetone then.Sample is after 150 ℃ of dryings, and the nitrogen that adopts argon gas+30% is as ion gas, and the gas flow of ions amount is 3L/min, and with the pure argon protection, welding current is 100A, and speed of welding is 150mm/min.Add the Al-20%Ti-5%Si alloy silk of diameter 1mm in welding process in welding pool, interpolation speed is 200mm/min.The welding back is to the welding point sample analysis, and the result shows: the welding point place has formed TiC, TiN, AlN and Al
3Ti etc. strengthen particle, the size of particle below 5 μ m, even particle distribution, the hot strength of welding point is about 230MPa, satisfies the requirement of strength of welding point.Constituent analysis shows that it is 6.2% and 1.51% that welding point part welded-joint divides the average content of Ti, Si element.
Embodiment 3
To the SiCp/6061 composite, weldering is preceding with 150
#The sand papering mother metal is removed oxide-film, cleans with acetone then.Sample adopts argon gas+30% nitrogen as ion gas after 150 ℃ of dryings, and the gas flow of ions amount is 3L/min, and with the pure argon protection, welding current is 100A, and speed of welding is 120mm/min.Add the Al-10%Ti-5%Si-5%Mg-1%Ce alloy silk of diameter 1mm in welding process in welding pool, interpolation speed is 200mm/min.The welding back is to the welding point sample analysis, and the result shows: the welding point place has formed TiC, TiN, AlN, Al
3Ti, MgAl
2O
4And Mg
3N etc. strengthen particle, and the size of particle is at 0.2-3 μ m, even particle distribution, and the hot strength of welding point is about 250MPa, satisfies the requirement of strength of welding point.Constituent analysis shows that it is 3.2%, 2.2%, 1.5%, 0.21% that welding point part welded-joint divides the average content of welding point part Ti, Si, Mg, Ce element.
Embodiment 4
To Al
2O
3The P/A356 composite, weldering is preceding with 150
#The sand papering mother metal is removed oxide-film, cleans with acetone then.Sample adopts argon gas+20% nitrogen as ion gas after 150 ℃ of dryings, and the gas flow of ions amount is 4L/min, and with the pure argon protection, welding current is 100A, and speed of welding is 120mm/min.Add the Al-10%Ti-5%Si-1%Ce alloy silk of diameter 1mm in welding process in welding pool, interpolation speed is 220mm/min.The welding back is to the welding point sample analysis, and the result shows: the welding point place has formed TiN, Al
3Ti strengthens particle, and the size of particle is at 0.5-2 μ m, even particle distribution, and the hot strength of welding point is about 240MPa, satisfies the requirement of strength of welding point.Constituent analysis shows that the average content of welding point part Ti, Si, Ce element is 2.51%, 2.3%, 0.16%.
Claims (2)
1, be used for the welding wire of the melt welding filling flux of particle enhanced aluminum-based composite material, it is characterized in that: each component is calculated with mass percent:
Ti：5％～20％；
Choose one or more arbitrarily among Si, Mg, Rare-Earth Ce or the La, content should reach separately: Si 3%～7%, and Mg 3%～7%, Rare-Earth Ce or La0.5%～1.5%; All the other Al;
It is Ti:5%～20%; Si 3%～7%; All the other Al;
Ti:5%～20%; Mg 3%～7%; All the other Al;
Ti:5%～20%; Rare-Earth Ce or La0.5%～1.5%, all the other Al;
Ti:5%～20%; Si 3%～7%; Mg3%～7%; All the other Al;
Ti:5%～20%; Si 3%～7%; Rare-Earth Ce or La0.5%～1.5%; All the other Al;
Ti:5%～20%; Mg 3%～7%; Rare-Earth Ce or La0.5%～1.5%; All the other Al;
Ti:5%～20%; Si 3%～7%; Mg 3%～7%, Rare-Earth Ce or La0.5%～1.5%, all the other Al.
2, the welding wire that is used for the melt welding filling flux of particle enhanced aluminum-based composite material according to claim 1 is characterized in that: the mass fraction of Ti is 10% in the welding wire, and Si, Mg are 5%, and Rare-Earth Ce or La are 1%.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100231970A CN100506461C (en) | 2007-06-08 | 2007-06-08 | Welding wire of melt welding filling flux for granular enhanced aluminum-based composite material |
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|---|---|---|---|
| CNB2007100231970A CN100506461C (en) | 2007-06-08 | 2007-06-08 | Welding wire of melt welding filling flux for granular enhanced aluminum-based composite material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101073860A true CN101073860A (en) | 2007-11-21 |
| CN100506461C CN100506461C (en) | 2009-07-01 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102079019A (en) * | 2011-01-19 | 2011-06-01 | 浙江银宇焊接新材料科技有限公司 | Multi-element compounded micro-alloyed Al-Mg-Sc series welding wire and preparation method thereof |
| CN102451960A (en) * | 2011-06-28 | 2012-05-16 | 力创(台山)电子科技有限公司 | Flux-cored wire for aluminum and aluminum welding |
| CN105458547A (en) * | 2015-12-28 | 2016-04-06 | 西安交通大学 | Active brazing filler metal suitable for cast aluminum-based composite material reinforced through high-volume-fraction SiC and preparation method of active brazing filler metal |
| CN108998717A (en) * | 2018-07-27 | 2018-12-14 | 合肥岑遥新材料科技有限公司 | A kind of metal matrix ceramic composites and preparation method thereof |
-
2007
- 2007-06-08 CN CNB2007100231970A patent/CN100506461C/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102079019A (en) * | 2011-01-19 | 2011-06-01 | 浙江银宇焊接新材料科技有限公司 | Multi-element compounded micro-alloyed Al-Mg-Sc series welding wire and preparation method thereof |
| CN102451960A (en) * | 2011-06-28 | 2012-05-16 | 力创(台山)电子科技有限公司 | Flux-cored wire for aluminum and aluminum welding |
| CN102451960B (en) * | 2011-06-28 | 2012-11-21 | 力创(台山)电子科技有限公司 | Flux-cored wire for aluminum and aluminum welding |
| CN105458547A (en) * | 2015-12-28 | 2016-04-06 | 西安交通大学 | Active brazing filler metal suitable for cast aluminum-based composite material reinforced through high-volume-fraction SiC and preparation method of active brazing filler metal |
| CN108998717A (en) * | 2018-07-27 | 2018-12-14 | 合肥岑遥新材料科技有限公司 | A kind of metal matrix ceramic composites and preparation method thereof |
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|---|---|
| CN100506461C (en) | 2009-07-01 |
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