CN1935419A - Laser deposited nickel-base alloy powder - Google Patents
Laser deposited nickel-base alloy powder Download PDFInfo
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- CN1935419A CN1935419A CN 200610101051 CN200610101051A CN1935419A CN 1935419 A CN1935419 A CN 1935419A CN 200610101051 CN200610101051 CN 200610101051 CN 200610101051 A CN200610101051 A CN 200610101051A CN 1935419 A CN1935419 A CN 1935419A
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Abstract
The present invention relates to a laser deposited nickel base alloy powder, belonging to the field of metal surface treatment material technology. It is characterized by that in its interior some raw material components capable of in-situ forming negative thermals expansion coefficient substance can be doped. The described raw material components capable of in-situ forming negative thermal expansion coefficient substance are Al2O3, Cu, ZrO2 and V2O5 or ZrO2 and WO3. The added quantity of Al2O3 and Cu is 1-5% of nickel base alloy weight, the mole ratio of Al2O3 and Cu is 1:2, the added quantity of ZrO2 and V2O5 is 1-10% of nickel base alloy weight, the mole ratio of ZrO2 and V2O5 is 1:1, and the added quantity of ZrO2 and WO3 is 1-10% of nickel base alloy weight, the mole ratio of ZrO2 and WO3 is 1:2. In the course of quick solidification of laser deposition the above-mentioned all components can in-situ produce the compounds of CuAlO2, ZrV2O7 or ZrW2O8 with negative thermal expansion coefficient.
Description
Technical field
The invention belongs to Treatment of Metal Surface material technology field, particularly a kind of admixture has and can original position generate the raw material composition of negative expansion coefficient material, thereby suppresses the laser deposited nickel-base alloy powder of cladding layer cracking.
Background technology
Laser melting and coating technique belongs to the sufacing field, this technology with the laser beam of high-energy-density as thermal source, at substrate material surface welding one deck new material, thereby can make technology at the common metal material surface with excellent properties materials such as wear-resisting, anti-corrosion, anti-oxidant and thermal stability are good.Laser melting and coating technique has rapid solidification, characteristics that workpiece deformation is little, demonstrates wide application prospect in fields such as Aeronautics and Astronautics, automobile, shipbuilding, defence and militaries.The Fast Heating of laser melting coating has the characteristics different with the common metal melting with the cladding layer of the feasible generation of cooling fast, pore in the cladding layer, be mingled with and the bad distribution of bulk hard phase is the inducement that cracks, the solidification shrinkage of cladding layer material and with tension that the base material mismatch in coefficient of thermal expansion is produced be to cause the direct factor of cladding layer crackle expansion until cracking.The cracking of cladding layer has become the biggest obstacle that influences the laser melting and coating technique industrialization.Nickel-base alloy is widely used in laser melting and coating technique with wear-resisting, anti-corrosion, the antioxygenic property of its excellence, but the nickel-base alloy cladding layer of high rigidity often can produce cracking inevitably, and Chinese scholars sets about the cracking sensitivity that reduces cladding layer has been done a large amount of research from material design and melting and coating process two aspects.At the material design aspect, the research of having carried out at present is to add elements such as V, Ti, Nb, Ni and rare earth in the bronze end to increase the toughness phase of cladding layer to fusion being laminated with; By adjusting γ that cladding layer Ni, Cr ratio adjust cladding layer, δ phase composition etc.Aspect melting and coating process, adopt methods such as function-graded material, remelting, preheating, slow cooling, adjusting process parameter.Though above method plays a role to the generation that suppresses the cladding layer crackle, but owing to do not have directly to set about from the coupling of adjusting cladding layer stress and the adjustment cladding layer and the matrix coefficient of expansion, thereby the tension that can not effectively adjust cladding layer is controlled the cladding layer cracking.
Summary of the invention
The object of the invention is to provide a kind of admixture to have can original position generate the raw material composition of negative expansion coefficient material, thereby suppresses the laser deposited nickel-base alloy powder of cladding layer cracking.
For reaching above-mentioned purpose, the present invention adopts following technical scheme: laser deposited nickel-base alloy powder, wherein admixture has the raw material composition that can original position generates the negative expansion coefficient material.
The described raw material composition that can original position generates the negative expansion coefficient material is Al
2O
3With Cu, ZrO
2And V
2O
5Perhaps ZrO
2And WO
3
Al
2O
3With the Cu addition be the 1-5% of nickel-base alloy weight, Al
2O
3With the Cu mol ratio be 1: 2.
ZrO
2And V
2O
5Addition is the 1-10% of nickel-base alloy, ZrO
2And V
2O
5Mol ratio is 1: 1.
ZrO
2And WO
3Addition is the 1-10% of nickel-base alloy, ZrO
2And WO
3Mol ratio is 1: 2.
The present invention is in the process of laser melting coating, and the high temperature that utilizes laser to produce can the original position generation have negative expansion coefficient substance C uAlO in cladding layer
2, ZrV
2O
7, ZrW
2O
8Deng compound, even dispersion is in the nickel-base alloy cladding layer.Owing to have the material of negative expansion coefficient, its negative expansion coefficient effect is effective in room temperature to 800 ℃ scope, therefore in the temperature-fall period after cladding layer solidifies, material with negative expansion coefficient can effectively be offset the volume contraction of nickel-base alloy cladding layer because of solidifying and lowering the temperature and brought in cladding layer, thereby can offset the tension that nickel-base alloy produces because of volume contraction effectively, reduce the sensitiveness that crackle produces effectively, finally suppressed the appearance of crackle.
Concrete melting and coating process is: add the raw material composition that can original position generates the negative expansion coefficient material in nickel-base alloy, through ball milling mixing 60-120 minute, the metallic substrates for the treatment of cladding is polished, cleaned, alloyed powder behind the ball milling is bonded on the metallic substrates with acetate fiber+acetone bonding agent or the mixing of other organic adhesives, thick coating 1.0-1.2mm carries out Laser Cladding Treatment after air-dry.The laser processing technique parameter is: optical maser wavelength 10.6 μ m, power density 2.0-3.0kW/cm
2, beam flying speed 3-6mm/s.Test the cladding layer crack distribution with the DPT-5 type dye check agent that Sino-Japan joint U.S. Kodak (Marktch) flaw detection equipment Co., Ltd produces.
With the carbon steel is matrix, and the laser melting coating admixture can original position generates the nickel-base alloy of the raw material composition of negative expansion coefficient material, the cladding layer macro morphology is good, dense structure, composition evenly, zero defect, cladding layer top hardness Hv test result about 700.
Description of drawings
Fig. 1 (a) and (b), (c) are respectively and add nickel-base alloy weight 0.5%, 1%, 2% (Al
2O
3+ Cu) laser deposited nickel-base alloy shape appearance figure (Al
2O
3With Cu mol ratio 1: 2; Laser cladding technological parameter: the TJ-HL-5000 crossing current 5kW CO that Wuhan unity laser company produces
2Laser instrument, wavelength 10.6 μ m, power density 2.5kW/cm
2, beam flying speed 4mm/s; DPT-5 type dye check agent test cladding layer crack distribution with Sino-Japan joint U.S. Kodak (Marktch) flaw detection equipment Co., Ltd produces adopts the indoor shot of the S5000 of Fuji digital camera);
Fig. 2 (a) and (b), (c) are respectively and add nickel-base alloy weight 2%, 4%, 6% (ZrO
2+ V
2O
5) laser deposited nickel-base alloy shape appearance figure (ZrO
2With V
2O
5Mol ratio 1: 1; Laser cladding technological parameter: the TJ-HL-5000 crossing current 5kW CO that Wuhan unity laser company produces
2Laser instrument, wavelength 10.6 μ m, power density 2.5kW/cm
2, beam flying speed 4mm/s; DPT-5 type dye check agent test cladding layer crack distribution with Sino-Japan joint U.S. Kodak (Marktch) flaw detection equipment Co., Ltd produces adopts the indoor shot of the S5000 of Fuji digital camera);
Fig. 3 (a) and (b), (c) are respectively and add nickel-base alloy weight 2%, 4%, 6% (ZrO
2+ WO
3) laser deposited nickel-base alloy shape appearance figure (ZrO
2With WO
3Mol ratio is 1: 2; Laser cladding technological parameter: the TJ-HL-5000 crossing current 5kW CO that Wuhan unity laser company produces
2Laser instrument, wavelength 10.6 μ m, power density 2.5kW/cm
2, beam flying speed 4mm/s; DPT-5 type dye check agent test cladding layer crack distribution with Sino-Japan joint U.S. Kodak (Marktch) flaw detection equipment Co., Ltd produces adopts the indoor shot of the S5000 of Fuji digital camera);
Fig. 4 is Al
2O
3+ Cu addition is the laser deposited nickel-base alloy X ray diffracting spectrum (Al of nickel-base alloy weight 5%
2O
3With Cu mol ratio 1: 2; Laser cladding technological parameter: the TJ-HL-5000 crossing current 5kW CO that Wuhan unity laser company produces
2Laser instrument, wavelength 10.6 μ m, power density 2.5kW/cm
2, beam flying speed 4mm/s; Adopt RIGAKU D/MAX-3B type to change the target X-ray diffractometer cladding layer is carried out material phase analysis);
Fig. 5 is V
2O
5+ ZrO
2Addition is the laser deposited nickel-base alloy X ray diffracting spectrum (ZrO of nickel-base alloy weight 6%
2With V
2O
5Mol ratio 1: 1; Laser cladding technological parameter: the TJ-HL-5000 crossing current 5kW CO that Wuhan unity laser company produces
2Laser instrument, wavelength 10.6 μ m, power density 2.5kW/cm
2, beam flying speed 4mm/s; Adopt RIGAKU D/MAX-3B type to change the target X-ray diffractometer cladding layer is carried out material phase analysis);
Fig. 6 is WO
3+ ZrO
2Addition is the laser deposited nickel-base alloy X ray diffracting spectrum (ZrO of nickel-base alloy weight 6%
2With WO
3Mol ratio is 1: 2; Laser cladding technological parameter: the TJ-HL-5000 crossing current 5kW CO that Wuhan unity laser company produces
2Laser instrument, wavelength 10.6 μ m, power density 2.5kW/cm
2, beam flying speed 4mm/s; Adopt RIGAKU D/MAX-3B type to change the target X-ray diffractometer cladding layer is carried out material phase analysis).
The specific embodiment
Embodiment 1, at plain steel surface laser cladding high rigidity nickel-base alloy, admixture can generate and have minus thermal-expansion coefficient CuAlO in the cladding alloy
2Composition Al
2O
3, Cu.
Press Al
2O
3Take by weighing the Al of 1-5% nickel-base alloy weight at 1: 2 with the Cu mol ratio
2O
3Add in the Co-based alloy powder ball milling mixing 60-120 minute with Cu.The metallic substrates for the treatment of cladding is polished, cleaned, mix with acetate fiber+acetone bonding agent or other organic adhesives alloyed powder after with ball milling and to be bonded on the metallic substrates, thick coating 1.0-1.2mm, after air-dry, carry out laser melting coating, Laser Cladding Treatment technological parameter: optical maser wavelength 10.6 μ m, power density 2.0-3.0kW/cm
2, beam flying speed 3-6mm/s.Analyze to find that after tested the laser cladding layer macro morphology is smooth, smooth, even tissue, densification, zero defect.Work as Al
2O
3+ Cu addition is during less than 4wt% (weight ratio), the crackle of cladding layer is compared pure nickel base alloy a small amount of appearance, and with the increase crack number minimizing of element addition, crackle disappears when being higher than 4wt%, but when addition was higher than 5wt%, cladding layer pattern quality had decline slightly.When addition was 5wt%, cladding layer top hardness Hv test result was 600-700.The X-ray diffraction material phase analysis is seen accompanying drawing 4.
Embodiment 2: at plain steel surface laser cladding high rigidity nickel-base alloy, admixture can generate and have minus thermal-expansion coefficient ZrV in the cladding alloy
2O
7Composition element ZrO
2, V
2O
5
Press ZrO
2With V
2O
5Mol ratio takes by weighing the ZrO of 1-10% nickel-base alloy weight at 1: 1
2And V
2O
5Add in the Co-based alloy powder, ball milling mixing 60-120 minute, the metallic substrates for the treatment of cladding is polished, cleaned, mix to be bonded on the metallic substrates with acetate fiber+acetone bonding agent or other organic adhesives alloyed powder after with ball milling, thick coating 1.0-1.2mm carries out laser melting coating after air-dry, Laser Cladding Treatment technological parameter: optical maser wavelength 10.6 μ m, power density 2.0-3.0kW/cm
2, beam flying speed 3-6mm/s.Analyze to find that after tested the laser cladding layer macro morphology is smooth, smooth, even tissue, densification, zero defect.Work as ZrO
2+ V
2O
5Addition is during less than 3wt%, the crackle of cladding layer is compared pure nickel base alloy a small amount of appearance, and crackle disappears when being higher than 3wt%, when addition between 4wt%-10wt%, it is good that cladding layer pattern quality keeps, cladding layer top hardness Hv test result 600-700.The X-ray diffraction material phase analysis is seen accompanying drawing 5.
Embodiment 3: at plain steel surface laser cladding high rigidity nickel-base alloy, admixture can generate and have minus thermal-expansion coefficient ZrW in the cladding alloy
2O
8Composition element WO
3, ZrO
2
Press ZrO
2With WO
3Mol ratio is to take by weighing the ZrO of 1-10% nickel-base alloy weight at 1: 2
2With WO
3Add in the Co-based alloy powder, ball milling mixing 60-120 minute, the metallic substrates for the treatment of cladding is polished, cleaned, alloyed powder behind the ball milling is bonded on the metallic substrates with acetate fiber+acetone bonding agent or the mixing of other organic adhesives, and thick coating 1.0-1.2mm carries out laser melting coating after air-dry, Laser Cladding Treatment technological parameter: optical maser wavelength 10.6 μ m, power density 2.0-3.0kW/cm
2, beam flying speed 3-6mm/s.Analyze to find that after tested the laser cladding layer macro morphology compares that above-mentioned two examples are poor slightly, a small amount of burr appears in cladding layer, even tissue, densification, zero defect.Work as WO
3+ ZrO
2Addition is during less than 6wt%, and the crackle of cladding layer reduces with the increase of element addition, when addition be 6wt% when above crackle disappear, hardness test Hv as a result is about 700, a little less than the hardness of nickel-base alloy.The X-ray diffraction material phase analysis is seen accompanying drawing 6.
Claims (5)
1, laser deposited nickel-base alloy powder is characterized in that, wherein admixture has the raw material composition that can original position generates the negative expansion coefficient material.
2, laser deposited nickel-base alloy powder as claimed in claim 1 is characterized in that, the described raw material composition that can original position generates the negative expansion coefficient material is Al
2O
3With Cu, ZrO
2And V
2O
5Perhaps ZrO
2And WO
3
3, laser deposited nickel-base alloy powder as claimed in claim 2 is characterized in that, Al
2O
3With the Cu addition be the 1-5% of nickel-base alloy weight, Al
2O
3With the Cu mol ratio be 1: 2.
4, laser deposited nickel-base alloy powder as claimed in claim 2 is characterized in that, ZrO
2And V
2O
5Addition is the 1-10% of nickel-base alloy, ZrO
2And V
2O
5Mol ratio is 1: 1.
5, laser deposited nickel-base alloy powder as claimed in claim 2 is characterized in that, ZrO
2And WO
3Addition is the 1-10% of nickel-base alloy, ZrO
2And WO
3Mol ratio is 1: 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610101051 CN1935419A (en) | 2006-02-24 | 2006-07-04 | Laser deposited nickel-base alloy powder |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200610017463.4 | 2006-02-24 | ||
| CN200610017463 | 2006-02-24 | ||
| CN 200610101051 CN1935419A (en) | 2006-02-24 | 2006-07-04 | Laser deposited nickel-base alloy powder |
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| Publication Number | Publication Date |
|---|---|
| CN1935419A true CN1935419A (en) | 2007-03-28 |
Family
ID=37953255
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|---|---|---|---|
| CN 200610101051 Pending CN1935419A (en) | 2006-02-24 | 2006-07-04 | Laser deposited nickel-base alloy powder |
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|---|---|
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101942657A (en) * | 2010-09-20 | 2011-01-12 | 中煤邯郸煤矿机械有限责任公司 | Surface laser cladding method of hydraulic support post and jack |
| CN112779532A (en) * | 2021-01-08 | 2021-05-11 | 中北大学 | Method for preparing zirconium-based amorphous/nanocrystalline composite coating on surface of zirconium alloy |
-
2006
- 2006-07-04 CN CN 200610101051 patent/CN1935419A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101942657A (en) * | 2010-09-20 | 2011-01-12 | 中煤邯郸煤矿机械有限责任公司 | Surface laser cladding method of hydraulic support post and jack |
| CN101942657B (en) * | 2010-09-20 | 2011-12-21 | 中煤邯郸煤矿机械有限责任公司 | Surface laser cladding method of hydraulic support post and jack |
| CN112779532A (en) * | 2021-01-08 | 2021-05-11 | 中北大学 | Method for preparing zirconium-based amorphous/nanocrystalline composite coating on surface of zirconium alloy |
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