CN102814599B - Welding wire for oxide dispersion strengthen (ODS) alloy melt welding - Google Patents
Welding wire for oxide dispersion strengthen (ODS) alloy melt welding Download PDFInfo
- Publication number
- CN102814599B CN102814599B CN201210285800.3A CN201210285800A CN102814599B CN 102814599 B CN102814599 B CN 102814599B CN 201210285800 A CN201210285800 A CN 201210285800A CN 102814599 B CN102814599 B CN 102814599B
- Authority
- CN
- China
- Prior art keywords
- welding
- ods
- welding wire
- particle
- alloy melt
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Arc Welding In General (AREA)
Abstract
The invention relates to the filed of novel material welding, is mainly used for oxide dispersion strengthen (ODS) alloy melt welding, and aims to solve the problem that the mechanical properties of a welded joint are reduced because the particles of an original wild phase are burnt and reunited, a new wild phase is not uniformly distributed and the like in the welded joint of the ODS alloy melt welding. An in-situ alloying welding method is utilized, a welding wire disclosed by the invention is added into a welding pool to in-situ produce a new particle phase which is more stable, and thus, the strength and other mechanical properties of a welded joint are improved. The welding wire comprises the following constituents according to mass fraction: 10%-25% of Cr, 1%-5% of Si, 0.5%-4% of Ti, 0.1%-0.3% of C, 2%-10% of Y2O3, 0.5%-3% of W, 0.2%-1% of Mn, 0.1%-0.5% of Ta, 0.1%-0.5% of V, 1%-5% of La2O3 and the balance of Fe, wherein Cr, Si and Ti are main adding elements.
Description
Technical field
The present invention relates to new material welding field, be mainly used in the molten solder of ODS alloy, for occurring in ODS alloy melting welding line that former wild phase particle scaling loss, reunion, newborn wild phase skewness etc. reduce the problem of welding joint mechanical property, utilize home position alloying welding method, by adding welding wire of the present invention in welding pool, the new Particle Phase that in-situ preparation is more stable, thus improve the mechanical properties such as strength of welded joint.
Background technology
ODS alloy for adopting Mechanical Alloying preparation, and through the sheet alloy of oxide dispersion intensifying (Oxide dispersion strengthened, ODS) of rolling processing; ODS alloy has that mechanical behavior under high temperature is good, the feature of high-temperature oxidation resistant and the excellent combination property such as corrosion resistance is good, in the selection of aero-engine hot junction parts, therefore have outstanding advantage; At present, this material is applied in fields such as the Aeronautics and Astronautics of some developed countries and the energy.Such as be applied to aero-engine high-efficient cooling structure---many dead levels plate structure, its chemical composition is as shown in table 1:
Table 1 ODS alloy composition (mass fraction, %)
ODS alloy is not in metallurgical poised state, undertaken welding more difficult by melting method, this is because: fusion process during melting welding destroys the unbalanced metallurgical state of ODS alloy, make that some fusing points originally adding metallic matrix are high, density is separated with liquid metals compared with the oxide particle of metal light again, and assemble slagging, remain in weld seam or float and focus on face of weld, this just destroys the mechanical properties such as the original composition of material and performance, particularly tensile strength.
Below when adopting ODS alloy material itself as packing material, the tissue of welding point and pulled out condition:
The ODS alloy thick to 1.3mm carries out TIG weldering, before welding, base metal test specimen surface is strictly cleared up, adopt straight polarity direct current, welding current 70A, speed of welding 1.8 mm/s, adopt purity be 99.9% argon gas as protection gas, gas flow is 8 L/min, model be MW3000 inversion total digitalization TIG Welding Machine on butt welding is carried out to ODS alloy; Postwelding produces metallographic and tensile sample along seam cross-section, SEM and EDS is utilized to analyze, comprehensive analysis Fig. 1, Fig. 2, there is the hole of some circles in face of weld under ESEM, see in some holes and have spherical particle thing to exist, with XRD, spherical particle thing constituent analysis in hole is learnt, these particles should be the dispersion-strengtherning phase Y-Al composite oxides of alligatoring, and this is because the high temperature of fusion process more than 1500 DEG C inevitably causes the ultra-fine oxide particle (Y of original Dispersed precipitate in the matrix of steel
2o
3) there is scaling loss reunion, generate the Al of diameter at more than 1um
5y
3o
12particle, the Y-Al composite oxide particle of alligatoring loses the invigoration effect of butt welded seam, and seriously reduce the tensile strength of ODS alloy, the hot strength of welding point is only 380MPa.
There is the problems such as wild phase particle scaling loss, wild phase skewness in ODS alloy melting welding line, adopt home position alloying welding method, by adding trace alloying element Ti, Si, C, W, Mn, Ta, V etc. in welding pool, the new Particle Phase that in-situ preparation is more stable; And by adding trace rare-earth element in welding pool, while crystal grain thinning, purification weld seam, can AlYO be generated
3and ReMO
3deng enhancing particle, thus improve tensile strength, seam original position alloying welding ODS alloy needs a kind of welding filling material, and therefore inventing a kind of welding filling material is the key realizing the weldering of ODS alloy melting.
Through finding the literature search of prior art, not yet there is the patent application of being correlated with at present both at home and abroad.
Summary of the invention
The object of the present invention is to provide a kind of packing material being applied to the molten solder of ODS alloy, effectively to suppress the problems such as former wild phase particle scaling loss, reunion, obtain the good weld seam that is shaped, improve the mechanical property of welding joint structure.
For achieving the above object, the method that the present invention adopts is: by mother metal is matrixed to study point based on, add the alloying elements such as Si, Ti, W, V, Ta, Re, welded by the content converting coherent element or compound; Wherein Y
2o
3and La
2o
3add can crystal grain thinning form new particulates reinforcements thus Resistance of Weld Metal has humidification, determine that its Composition Design is (mass fraction) 2% ~ 10% through Experimental Comparison; Si adds the mobility can improving molten bath in welding process, generates SiO
2particle both serves humidification to matrix and again reduces oxygen content in molten bath, determines that its Composition Design is (mass fraction) 1% ~ 5% through Experimental Comparison; Dosing appropriate Ti (0.5% ~ 4%), is to form a large amount of diffusion carbide TiC, controls grain growth, crystal grain thinning, improves the strength of materials and toughness; C adds the generation that can be reduced pore on the one hand by dividing potential drop effect, can form the wild phase particles such as TiC, TaC on the other hand with other element reactions; In conjunction with before do experimental result, the composition (mass fraction) of W is designed to 0.5% ~ 3%, object be keep needed for enough normal temperature and elevated temperature strength; Consider the impact of the content of Cr on low-temperature impact toughness value, adjusting the Composition Design of Cr to the content of Cr is (mass fraction) 10% ~ 25%; Dose appropriate Ta (0.1% ~ 0.5%), to form a large amount of diffusion carbide, control grain growth, crystal grain thinning, improves the strength of materials and toughness, Ta (C, N) generation can provide the core of a large amount of forming core on the one hand, be beneficial to forming core, these second-phases hinder the sliding motion of dislocation on the other hand, thus increase the drag of plastic deformation; Add Mn (mass fraction) and be designed to 0.2 % ~ 1%, main purpose improves the intensity of welding point; Need to add appropriate V, (mass fraction) design, between 0.1%-0.5%, can obtain and the complementary effect of W.
In ODS alloy melting weldering welding wire, the relative proportion (mass fraction) of each composition should be as follows:
Cr:10% ~ 25%; Si:1% ~ 5%; Ti:0.5% ~ 4%; C:0.1% ~ 0.3%; Y
2o
3: 2% ~ 10%; W:0.5% ~ 3%; Mn:0.2 % ~ 1%; Ta:0.1% ~ 0.5%; V:0.1% ~ 0.5%; La
2o
3: 1% ~ 5%; All the other Fe; Wherein Cr, Si, Ti are main Addition ofelements.
Above-mentioned chemical composition proportioning is preferably containing Cr:20%; Si:2%; Ti:1%; Y
2o
3: 4%; C:0.25%; Mn:0.45%; W:1.5%; Ta: 0.15%; V:0.15%; La
2o
3: 4%; Surplus Fe.
The present invention has the following advantages:
1) this packing material has good welding usability; the gas shield melting methods such as Ar, He can be adopted to weld; generated in-situ novel enhanced particle is tiny, be evenly distributed; weldering is made to meet Metal Mechanic Property high; but also there is beautiful appearance, splash little, and realize the advantages such as all-position welding.
2) this welding wire takes full advantage of the rich rare earth metal of China, and based on domestic, raw material supply is sufficient; Therefore, with low cost, good economic results in society can be obtained.
Accompanying drawing explanation
The weld seam micro-organization chart of Fig. 1 mother metal melting;
The weld seam XRD analysis figure of Fig. 2 mother metal melting;
The weld seam micro-organization chart of Fig. 3 comparative example 1;
The weld seam micro-organization chart of Fig. 4 comparative example 2;
The weld seam micro-organization chart of Fig. 5 specific embodiment 1;
The weld seam XRD analysis figure of Fig. 6 specific embodiment 1;
The weld seam micro-organization chart of Fig. 7 specific embodiment 1;
The weld seam micro-organization chart of Fig. 8 specific embodiment 2.
Detailed description of the invention
Adopt the present invention as the packing material of ODS alloy melting weldering welding, the deleterious interfacial in welding process effectively can be suppressed to react, obtain the good weld seam that is shaped, improve the mechanical property of seam organization.
In order to obtain these characteristics, the present invention makes welding filling material the above-mentioned element of the weldability that can improve ODS alloy by proportioning, for the problems existed in the melting welding of ODS alloy, interpolation is needed to have corresponding inhibiting different element, not only need the constituent adjusting packing material, the ratio also will controlled well between each composition.
The invention example contrasting the scope of the invention is below described.
comparative example 1
Before welding, mother metal test plate (panel) sand for surface paper is polished metallic luster, and with acetone cleaning, adopt purity to be that the argon gas of 99.9% is as protection gas, gas flow is 8L/min, adopts straight polarity direct current, welding current 70A, speed of welding 1.8 mm/s, selects containing Cr:20%; Si:2%; Ti:1%; Y
2o
3: 0%; C:0.25%; Mn:0%; W:0%; Ta:0%; V:0%; The welding wire of surplus Fe, model be MW3000 inversion total digitalization TIG Welding Machine on butt welding is carried out to it, postwelding produces metallographic and tensile sample along seam cross-section, utilizes SEM, the technological means such as EDS and XRD are analyzed, and result shows: welding point place defines TiC, TiN, Al
3ti etc. strengthen particle, the size of particle is more than 1 μm, even particle distribution but random profile, still there is burning problems (Fig. 3) of significantly reuniting in the former enhancing particle in matrix, the average tensile strength of welding point is 483MPa, as can be seen here, Mn, W, Ta, V and rare earth oxide Y is not being added
2o
3during Deng trace alloying element, strength of welded joint is lower.
comparative example 2
Before welding, mother metal test plate (panel) sand for surface paper is polished metallic luster, and with acetone cleaning, adopt purity to be that the argon gas of 99.9% is as protection gas, gas flow is 8L/min, adopts straight polarity direct current, welding current 70A, speed of welding 1.8 mm/s, selecting containing Cr is 20%; Si is 2%; Ti is 1%; Y
2o
3be 2%; Be 0.1% containing C; Mn:0.20%; W:0.5%; Ta:0.1%; V:0.1%; La
2o
3: 1%; Surplus is the welding wire of Fe, and be that MW3000 inversion total digitalization TIG Welding Machine carries out butt welding to it in model, postwelding produces metallographic and tensile sample along seam cross-section, utilizes SEM, EDS and XRD etc. analyze, and result shows: welding point place defines SiO
2, TiN, TaN, Ti O
2, Al
2o
3, Al
3ti, AlYO
3, CrO
3and ReMO
3deng enhancing particle, the size of particle is below 1 μm, and even particle distribution (Fig. 4), the average tensile strength of welding point is 530MPa, as can be seen here, adds a small amount of (when taking off limit value) Mn, W, Ta, V and rare earth oxide Y
2o
3during Deng alloying element, strength of welded joint increases, but still lower.
specific embodiment 1
Before welding, mother metal test plate (panel) sand for surface paper is polished metallic luster, and with acetone cleaning, adopt purity to be that the argon gas of 99.9% is as protection gas, gas flow is 8L/min, adopts straight polarity direct current, welding current 70A, speed of welding 1.8 mm/s, selects containing Cr:20%; Si:2%; Ti:1%; Y
2o
3: 4%; C:0.25%; Mn:0.45%; W:1.5%; Ta:0.15%; V:0.15%; La
2o
3: 4%; The welding wire of surplus Fe, be that MW3000 inversion total digitalization TIG Welding Machine carries out butt welding to it in model, postwelding produces metallographic and tensile sample along seam cross-section, utilize SEM, the technological means such as EDS and XRD are analyzed, and complex chart 5, Fig. 6 can be found out: welding point place defines SiO
2, TiC, TiN, TiO
2, Al
2o
3, Al
3ti, YAlO
3, CrO
3, TaC, TaN, WC, VC and ReMO
3deng enhancing particle, the size of particle is below 1 μm, and even particle distribution well-regulated profile (Fig. 7), the average tensile strength of welding point reaches 652MPa, as can be seen here, adds appropriate Mn, W, Ta, V and rare earth oxide Y
2o
3during Deng alloying element, strength of welded joint can effectively improve.
specific embodiment 2
Welding before mother metal test plate (panel) sand for surface paper is polished metallic luster, and with acetone cleaning, adopt purity be 99.9% argon gas as protect gas, gas flow is 8L/min; adopt straight polarity direct current, welding current 70A, speed of welding 1.8 mm/s, selecting containing Cr is 20%; Si is 2%, Ti is 1%, Y
2o
3being 8%, is 0.25%, Mn:1% containing C; W:3%; Ta:0. 5%; V:0. 5%; La
2o
3: 5%; Surplus is the welding wire of Fe, model be MW3000 inversion total digitalization TIG Welding Machine on butt welding is carried out to it, postwelding produces metallographic and tensile sample along seam cross-section, utilizes SEM, the technological means such as EDS and XRD are analyzed, and result shows: welding point place defines SiO
2, TiC, TiN, Ti O
2, Al
2o
3, Al
3ti, AlYO
3, CrO
3, TaC, TaN, WC, VC and ReMO
3deng enhancing particle, the size of particle is at about 1 μm, and the random profile of even particle distribution, the former enhancing particle aggregation burning problems in matrix is significantly improved (Fig. 8), and the average tensile strength of welding point is 604MPa.
specific embodiment 3
Before welding, mother metal test plate (panel) sand for surface paper is polished metallic luster, and with acetone cleaning, adopt purity to be that the argon gas of 99.9% is as protection gas, gas flow is 8L/min, adopts straight polarity direct current, welding current 70A, speed of welding 1.8 mm/s, selects containing Cr:20%; Si:3%; Ti:2%; Y
2o
3: 4%; C:0.25%; Mn:0.55%; W:2.0%; Ta:0.25%; V:0.25%; La
2o
3: 4%; The welding wire of surplus Fe, be that MW3000 inversion total digitalization TIG Welding Machine carries out butt welding to it in model, postwelding produces metallographic and tensile sample along seam cross-section, utilize SEM, the technological means such as EDS and XRD are analyzed, and complex chart 5, Fig. 6 can be found out: welding point place defines SiO
2, TiC, TiN, TiO
2, Al
2o
3, Al
3ti, YAlO
3, CrO
3, TaC, TaN, WC, VC and ReMO
3deng enhancing particle, the size of particle is below 1 μm, and even particle distribution well-regulated profile, the average tensile strength of welding point reaches 611MPa.
specific embodiment 4
Before welding, mother metal test plate (panel) sand for surface paper is polished metallic luster, and with acetone cleaning, adopt purity to be that the argon gas of 99.9% is as protection gas, gas flow is 8L/min, adopts straight polarity direct current, welding current 70A, speed of welding 1.8 mm/s, selects containing Cr:20%; Si:3%; Ti:3%; Y
2o
3: 5%; C:0.25%; Mn:0.6%; W:2.5%; Ta:0.45%; V:0.45%; La
2o
3: 5%; The welding wire of surplus Fe is that MW3000 inversion total digitalization TIG Welding Machine carries out butt welding to it in model.Postwelding produces metallographic and tensile sample along seam cross-section, utilizes SEM, and the technological means such as EDS and XRD are analyzed.Complex chart 5, Fig. 6 can be found out: welding point place defines SiO
2, TiC, TiN, TiO
2, Al
2o
3, Al
3ti, YAlO
3, CrO
3, TaC, TaN, WC, VC and ReMO
3deng enhancing particle, the size of particle is below 1 μm, and even particle distribution well-regulated profile, the average tensile strength of welding point reaches 623MPa.
Claims (2)
1., for a welding wire for ODS alloy melting weldering, it is characterized in that: the composition of described welding wire is calculated as with mass fraction: Cr:10% ~ 25%; Si:1% ~ 5%; Ti:0.5% ~ 4%; C:0.1% ~ 0.3%; Y
2o
3: 2% ~ 10%; W:0.5% ~ 3%; Mn:0.2 % ~ 1%; Ta:0.1% ~ 0.5%; V:0.1% ~ 0.5%; La
2o
3: 1% ~ 5%; All the other Fe; Wherein Cr, Si, Ti are main Addition ofelements.
2. as claimed in claim 1 a kind of for ODS alloy melting weldering welding wire, it is characterized in that: the composition of described welding wire is calculated as with mass fraction: Cr:20%; Si:2%; Ti:1%; Y
2o
3: 4%; C:0.25%; Mn:0.45%; W:1.5%; Ta: 0.15%; V:0.15%; La
2o
3: 4%; Surplus Fe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210285800.3A CN102814599B (en) | 2012-08-13 | 2012-08-13 | Welding wire for oxide dispersion strengthen (ODS) alloy melt welding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210285800.3A CN102814599B (en) | 2012-08-13 | 2012-08-13 | Welding wire for oxide dispersion strengthen (ODS) alloy melt welding |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102814599A CN102814599A (en) | 2012-12-12 |
| CN102814599B true CN102814599B (en) | 2015-07-08 |
Family
ID=47299236
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210285800.3A Expired - Fee Related CN102814599B (en) | 2012-08-13 | 2012-08-13 | Welding wire for oxide dispersion strengthen (ODS) alloy melt welding |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102814599B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107755919A (en) * | 2017-10-16 | 2018-03-06 | 合肥工业大学 | A kind of welding material and preparation method for the connection of 14Cr ODS ferrous alloys |
| CN114635055B (en) * | 2022-02-14 | 2022-10-28 | 江苏大学 | Material preparation method of powder core wire material for additive manufacturing by regulating and controlling powder particle size to obtain alloy with accurate components |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101249594A (en) * | 2008-03-21 | 2008-08-27 | 徐州师范大学 | Mild steel arc welding electrode containing lanthanum and Yt element |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57154395A (en) * | 1981-03-19 | 1982-09-24 | Daido Steel Co Ltd | Welding material |
| JPS57156893A (en) * | 1981-03-23 | 1982-09-28 | Daido Steel Co Ltd | Welding material |
| JP5606994B2 (en) * | 2010-09-30 | 2014-10-15 | 株式会社神戸製鋼所 | Machine parts welded with overlay welding material and overlay welding metal |
-
2012
- 2012-08-13 CN CN201210285800.3A patent/CN102814599B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101249594A (en) * | 2008-03-21 | 2008-08-27 | 徐州师范大学 | Mild steel arc welding electrode containing lanthanum and Yt element |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102814599A (en) | 2012-12-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105269174B (en) | A kind of ocean engineering 460MPa grades of flux-cored wires and its application | |
| CN103846577B (en) | A kind of X100 pipe line steel solder flux used for submerged arc welding and preparation method thereof | |
| CN102794578B (en) | Brazing filler metal for brazing titanium alloy and steel or titanium aluminum alloy as well as steel | |
| CN103358051B (en) | A kind of copper base solder and preparation method thereof | |
| CN103223562B (en) | One side solder flux used for submerged arc welding | |
| KR100998839B1 (en) | Flux-cored wire for gas-shielded arc welding | |
| CN102909492B (en) | Fast sintered flux of X100 pipe line steel height weldering used for submerged arc welding and preparation method thereof | |
| CN102658442B (en) | Low-alloy steel welding electrode with Cr control capacity and FAC resisting capacity of weld metal of basic slag system | |
| CN103252593B (en) | Oxidation-resistant low-expansion high-temperature alloy welding wire for gas shielded welding | |
| KR20110090761A (en) | Flux cored wire | |
| CN107921590A (en) | Flux-cored wire for gas-shielded arc welding | |
| CN105127614A (en) | Grinder roll overlaying dreg-free self-protection flux-cored wire | |
| CN103567663A (en) | High-entropy alloy welding wire for welding titanium-steel and preparation method thereof | |
| CN108971795A (en) | A kind of high manganese austenite low-temperature steel welding rod | |
| CN105499837A (en) | Self-protecting flux-cored wire and welding method | |
| CN103495815A (en) | Welding material, application thereof and welding method | |
| JP2012161827A (en) | Submerge arc welding method | |
| CN111975244A (en) | Coating-free weather-resistant steel bridge CO with 650 MPa-grade tensile strength2Gas shielded welding wire and wire rod | |
| CN103962746B (en) | A kind of arc welding gas shielded flux cored wire | |
| CN105710558A (en) | Flux-cored wire and welding flux used for submerged-arc welding of low-temperature steel | |
| KR101171445B1 (en) | Flux cored wire | |
| JP5450260B2 (en) | Weld metal with excellent hot crack resistance | |
| CN105014261A (en) | Seamless metal powder core type flux-cored wire for chromium-molybdenum steel | |
| CN110560681B (en) | Metal type powder core wire material, preparation method and application | |
| CN102814599B (en) | Welding wire for oxide dispersion strengthen (ODS) alloy melt welding |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150708 Termination date: 20180813 |