CN104513979B - A kind of titanium alloy laser strengthened coat with spontaneous nano-particle reinforcement - Google Patents
A kind of titanium alloy laser strengthened coat with spontaneous nano-particle reinforcement Download PDFInfo
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- CN104513979B CN104513979B CN201310455692.4A CN201310455692A CN104513979B CN 104513979 B CN104513979 B CN 104513979B CN 201310455692 A CN201310455692 A CN 201310455692A CN 104513979 B CN104513979 B CN 104513979B
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- 229910001069 Ti alloy Inorganic materials 0.000 title claims abstract description 38
- 239000002105 nanoparticle Substances 0.000 title claims abstract description 14
- 230000002269 spontaneous effect Effects 0.000 title claims abstract description 9
- 230000002787 reinforcement Effects 0.000 title claims abstract description 8
- 230000007704 transition Effects 0.000 claims abstract description 19
- 238000005728 strengthening Methods 0.000 claims abstract description 17
- 239000008187 granular material Substances 0.000 claims abstract description 12
- 239000000758 substrate Substances 0.000 claims abstract description 7
- 239000002245 particle Substances 0.000 claims abstract description 4
- 229910045601 alloy Inorganic materials 0.000 claims description 27
- 239000000956 alloy Substances 0.000 claims description 27
- 239000011230 binding agent Substances 0.000 claims description 22
- 239000000843 powder Substances 0.000 claims description 20
- 239000010936 titanium Substances 0.000 claims description 20
- -1 nitrogen-containing compound Chemical class 0.000 claims description 16
- 239000012779 reinforcing material Substances 0.000 claims description 16
- 229910052782 aluminium Inorganic materials 0.000 claims description 15
- 229910052720 vanadium Inorganic materials 0.000 claims description 15
- 238000000034 method Methods 0.000 claims description 12
- 238000013532 laser treatment Methods 0.000 claims description 11
- 239000000203 mixture Substances 0.000 claims description 11
- 230000008569 process Effects 0.000 claims description 11
- 229910052750 molybdenum Inorganic materials 0.000 claims description 10
- 239000000126 substance Substances 0.000 claims description 9
- 238000011282 treatment Methods 0.000 claims description 9
- 239000012298 atmosphere Substances 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 8
- 239000003921 oil Substances 0.000 claims description 8
- 229910052719 titanium Inorganic materials 0.000 claims description 8
- 238000006243 chemical reaction Methods 0.000 claims description 7
- 235000018290 Musa x paradisiaca Nutrition 0.000 claims description 6
- 238000004140 cleaning Methods 0.000 claims description 6
- 239000003822 epoxy resin Substances 0.000 claims description 6
- 239000003292 glue Substances 0.000 claims description 6
- 229910052757 nitrogen Inorganic materials 0.000 claims description 6
- 229920000647 polyepoxide Polymers 0.000 claims description 6
- 229910052726 zirconium Inorganic materials 0.000 claims description 6
- 230000009471 action Effects 0.000 claims description 4
- 229910052804 chromium Inorganic materials 0.000 claims description 3
- 150000001875 compounds Chemical class 0.000 claims description 3
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 229910052759 nickel Inorganic materials 0.000 claims description 3
- 230000001681 protective effect Effects 0.000 claims description 3
- 229910052721 tungsten Inorganic materials 0.000 claims description 3
- 229920002678 cellulose Polymers 0.000 claims description 2
- 239000012461 cellulose resin Substances 0.000 claims description 2
- 229910052751 metal Inorganic materials 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims description 2
- 150000002739 metals Chemical class 0.000 claims description 2
- 238000002360 preparation method Methods 0.000 claims description 2
- 239000003795 chemical substances by application Substances 0.000 claims 2
- 240000005561 Musa balbisiana Species 0.000 claims 1
- 229910017464 nitrogen compound Inorganic materials 0.000 claims 1
- 150000002830 nitrogen compounds Chemical class 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims 1
- 230000007774 longterm Effects 0.000 abstract description 4
- 238000009826 distribution Methods 0.000 abstract description 3
- 210000001787 dendrite Anatomy 0.000 abstract description 2
- 239000010410 layer Substances 0.000 description 24
- 238000000576 coating method Methods 0.000 description 12
- 238000005516 engineering process Methods 0.000 description 11
- 239000011248 coating agent Substances 0.000 description 10
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 8
- 239000007789 gas Substances 0.000 description 8
- 239000002131 composite material Substances 0.000 description 7
- 241000234295 Musa Species 0.000 description 5
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 5
- 238000010276 construction Methods 0.000 description 4
- 230000002708 enhancing effect Effects 0.000 description 3
- 238000005121 nitriding Methods 0.000 description 3
- 230000003014 reinforcing effect Effects 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- 208000037656 Respiratory Sounds Diseases 0.000 description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 2
- 229910052786 argon Inorganic materials 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910052734 helium Inorganic materials 0.000 description 2
- 239000011261 inert gas Substances 0.000 description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 244000137852 Petrea volubilis Species 0.000 description 1
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000005915 ammonolysis reaction Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000313 electron-beam-induced deposition Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- QOWAEJDMPSSSJP-WKNCGDISSA-N lipid-associating peptide Chemical compound C([C@H](NC(=O)[C@H](CCC(O)=O)NC(=O)[C@H](CCCCN)NC(=O)[C@@H](NC(=O)[C@H](CO)NC(=O)[C@@H](N)CO)CC(C)C)C(=O)N[C@@H](CC=1C2=CC=CC=C2NC=1)C(=O)N[C@@H](CO)C(=O)N[C@@H](CO)C(=O)N[C@@H](CC(C)C)C(=O)N[C@@H](CCCCN)C(=O)N[C@@H](CCC(O)=O)C(=O)N[C@@H](CO)C(=O)N[C@@H](CC=1C=CC=CC=1)C(=O)N[C@@H](CO)C(O)=O)C1=CC=C(O)C=C1 QOWAEJDMPSSSJP-WKNCGDISSA-N 0.000 description 1
- 108010071296 lipid-associating peptides Proteins 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000005543 nano-size silicon particle Substances 0.000 description 1
- 150000004767 nitrides Chemical group 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- 230000008447 perception Effects 0.000 description 1
- 238000005191 phase separation Methods 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Other Surface Treatments For Metallic Materials (AREA)
Abstract
The invention discloses a kind of titanium alloy laser strengthened coat with spontaneous nano-particle reinforcement, the strengthened coat includes compact nanometer size granule enhancement layer and interface transition layer, strengthen phase without large scale dendrite, the compact nanometer size granule enhancement layer has the close pile structure feature of the superfine nano particle of particle diameter≤50nm, microexamination is in texture shape fractions distribution, its thickness>700μm；Interface transition layer is located between compact nanometer size granule enhancement layer and titanium alloy substrate, and thickness is between 100 600 μm；Hardness transition between interface transition layer and compact nanometer size granule enhancement layer is also gradient transition for the hardness transition between gradient transition, with titanium alloy substrate.Spontaneous nano particle laser strengthened coat even tissue of the invention, can take into account thicker strengthening layer thickness and splendid intensity gradient distribution behavior, so as to be conducive to strengthening surface long-term stable operation while titanium alloy surface hardness is improved.
Description
（One）Technical field
The invention belongs to titanium alloy surface intensive treatment technology, and in particular to a kind of titanium with spontaneous nano-particle reinforcement
Alloy by Laser strengthened coat.
（Two）Background technology
Titanium alloy is to obtain a kind of wide variety of metal material with outstanding combination property in recent years, is used at present
Make the high speed flow passage components such as blade, leaf dish and all kinds of pump valves.Titanium alloy member efficient hardening means generally acknowledged at present are main
It is surfaces nitrided treatment.Tradition using it is more be high-temperature ammonolysis technology, including high-temperature gas nitridation, ionic nitriding etc..But one
As to there is nitride thickness excessively thin（Several microns to tens microns）, need integral high-temperature heat and nitridation process in overall gas
The shortcomings of atmosphere requirement is strict, causes efficiency of nitridation not high, especially to large-size components application difficult etc..For this problem,
With the development of laser technology, people have also been proposed laser gas nitriding technology, and the technology is a kind of local strengthening technology, is passed through
Nitrogen in liquid titanium under high temperature in laser molten pool and surrounding atmosphere reacts and obtains the nitrogenous enhancing of high rigidity and mutually realize by force
Change.The technology have do not need integral high-temperature heating, hardening depth it is big（Some tens of pm is to hundreds of microns）, only need local atmosphere to protect
The advantages of shield, therefore cause extensive interest.But its nitrogen content for participating in reaction is difficult to precise control causes crackle high quick
There is the large dendritic crystal phase for being unfavorable for performance improvement in perception, strengthening layer（Size is general in a few micrometers to some tens of pm）And table
The problems such as face is coarse, significantly limit application of the technology in production practices.Therefore industrial urgent need one kind can at present
High surface hardness strengthening layer high-strength characteristic is enough played, the titanium alloy surface nitridation reinforcing skill of long-term stable operation can be taken into account again
Art.
For the problem that conventional laser Nitriding Technology is present, proposed here a kind of new, highly controllable with nitrogen content
Titanium alloy surface laser nano nitrogen treatment technology.
（Three）The content of the invention
It is an object of the invention to provide a kind of new pattern laser nano silicon nitride composite coating of titanium alloy surface, closed titanium is improved
Thicker strengthening layer thickness can be taken into account while golden watch surface hardness, so as to be conducive to long-term stable operation.
For achieving the above object, the present invention is adopted the following technical scheme that：
A kind of titanium alloy laser strengthened coat with spontaneous nano-particle reinforcement, its preparation method comprises the following steps：
（1）Surface cleaning treatment is carried out to titanium alloy surface pending area；
（2）In step（1）The preset special reinforcing material powder of titanium alloy surface pending area and binding agent after treatment
Mixture, laser irradiation is carried out according to surface geometry configuration, in laser action process using protective atmosphere to laser make
Protected with area, so as to obtain strengthened coat in titanium alloy surface；The special reinforcing material powder is following three classes material
Mixing powder：1. Ti simple substance, 2. alloy, 3. nitrogen-containing compound, described alloy are selected from what following any several metals were formed
Alloy：W, Mo, V, Al, Zr, Cr, Ni, Fe, described nitrogen-containing compound are that can participate in melt tank reaction simultaneously at 500~4000 DEG C
The compound of N element is provided；Counted as 100% with the mixture quality of special reinforcing material powder and binding agent, wherein the quality of Ti
Between 40~90%, between 0~16%, the mass percent of nitrogen-containing compound is 0.5 for the mass percent of alloy for percentage
Between~15%, and the Zhi of binding agent measures Bai Fen Bi≤50%.
Titanium alloy laser strengthened coat with spontaneous nano-particle reinforcement of the present invention, including compact nanometer yardstick
Particle enhancement layer and interface transition layer, strengthen phase without large scale dendrite, and two coatings are disposable in laser treatment process
Obtain.Laser zone of action surface in matrix surface mechanism is melted, and Ti carries out dissolving reaction with nitrogen-containing compound,
And separated out by in-situ reaction in follow-up process of setting, form compact nanometer size granule enhancement layer, compact nanometer yardstick
Grain enhancement layer has the close pile structure feature of the superfine nano particle of particle diameter≤50nm, and microexamination is in texture shape form, its thickness
According to the unusual of handling process parameter>700μm；Interface transition layer is located at compact nanometer size granule enhancement layer and titanium alloy
Between matrix, thickness according to the unusual between 100-600 μm of handling process parameter, itself and compact nanometer size granule
Hardness transition between enhancement layer is also gradient transition for the hardness transition between gradient transition, with titanium alloy substrate.
Technical scheme is illustrated below.
Step of the present invention（1）In, described surface cleaning treatment is the cleaning treatments such as conventional oil removing, rust cleaning.
Step of the present invention（2）In preset material be special reinforcing material powder and binding agent, the special reinforcing material
In powder, simple substance Ti mainly plays base phase separation, and alloy has base phase and invigoration effect concurrently, may be selected from following any several combination：
W, Mo, V, Al, Zr, Cr, Ni, Fe, preferably described alloy are the combination of Al, V, Mo and Zr, the wherein mass ratio of Al, V, Mo and Zr
It is 1：0.05~0.95：0.05~0.45：0.05~0.55；Or preferably described alloy is the combination of Al, V and Mo, wherein Al, V
It is 1 with the mass ratio of Mo：0.10~0.76：0.05~0.35；Or preferably described alloy is the combination of Al and V, wherein Al and V
Mass ratio be 1：0.45~0.85.In preparing and mixing powder process, except Ti, alloy and nitrogen-containing compound directly can be mixed
With it is outer, be further improve mix uniformity, first simple substance Ti and alloy can also be made according to above-mentioned compositional ranges prefabricated
Powder, then mixes with nitrogen-containing compound again.Nitrogen-containing compound mainly plays invigoration effect, can be TiN, BN, Ti (C, N) etc..
Binding agent is added in the preset material of the present invention can improve the adhesive ability of special reinforcing material powder, and binding agent may be selected from down
A kind of or arbitrarily several combination of row：Glue, banana oil, cellulose or epoxy resin etc..
Step of the present invention（2）Preset special reinforcing material powder and the mixture of binding agent, with special strengthening material feed powder
The gross mass of end and binding agent is 100% meter, and the mass percent of Ti is 51~90%, the mass percent of alloy preferably wherein
It is 3~14%, the mass percent of nitrogen-containing compound is 1~12.8%, the mass percent of binding agent is 5~40%.It is more excellent
It is 59~85.5% to select the mass percent of Ti, and the mass percent of alloy is 3.5~13.5%, the quality hundred of nitrogen-containing compound
Divide than being 1~11%, the mass percent of binding agent is 10~30%.
The present invention after the preset special reinforcing material powder of surface pending area and binding agent, according to surface geometry configuration
Selection it is certain it is shaped after light beam carry out laser treatment, it is described it is shaped after light beam be circular light spot or ring-shaped light spot light
Beam.During using circular light spot, focal point spot diameter is between 0.5mm~60mm；During using ring-shaped light spot, in focal point hot spot
Diameter is not less than 0.5mm, and overall diameter is not more than 60mm.The technological parameter of described laser treatment is recommended as follows：
When being irradiated using laser, laser power >=300W, laser power density >=104W/cm2, sweep speed >=0.01m/
Min, amount of lap 5~90% when multiple tracks is scanned；Further, preferably 600~2500W of laser power, laser power density 104~
106W/cm2, 0.05~0.8m/min of sweep speed, amount of lap 10~30% when multiple tracks is scanned；
Protective atmosphere in laser treatment process of the present invention is recommended as inert gas atmosphere, such as argon gas, helium.
Composite coating of the present invention, with low power in close in nanoscale particle under microcosmic texture characteristic, high power
Large scale is free of in the two-stage fine structure of heap feature, Laser Strengthening Layer（Micron dimension）Dendritic crystalline hardening constituent.The present invention can be with
The composite coating of bigger thickness is formed as follows：In above-mentioned steps（2）The strengthened coat surface of acquisition is molten by laser
Cover or electron beam deposition or the mode of built-up welding prepare one layer of pure titanium or titanium alloy-based bottom without enhancing ingredients, then thereon
Repeat step（1）And step（2）Operation, so as to can be formed in titanium alloy surface and formed comprising multiple composite coatings " it is hard-
It is soft-hard " strengthened coat of sandwich construction.
Compared with prior art, advantages of the present invention includes：
1. the content for participating in the N of reaction and other reinforcing compositions can be effectively controlled using this method, biography is solved
The reinforcing component content that reaction is participated in system laser surface nitridation process is difficult to the problem of precise control；
2. the structure-reinforced coating of multi-level fine of the invention can improve titanium alloy surface hardness, and strengthening layer thickness is big, firmly
Degree distribution gradient, enhancing phase size is tiny, in the absence of the thick micron for being easily caused crackle and/or ten micron dimension TiN
Crystalline substance, so as to be conducive to coating long-term stable operation；
3. the composite construction strengthening layer process is simple, good reliability, it is easy to obtain, it is not necessary to complicated atmosphere protection, only
The multilayer strengthened layer of high-quality composite construction is obtained by carrying out localised protection using inert gases such as Ar, He in atmospheric conditions；
4., by changing different technical parameters and surface applied material, different surfaces hardness can be obtained with combination property
Interlayer structure adapts to different surface peening application fields, widely applicable.
(four）Brief description of the drawings
Fig. 1 is the microcosmic texture microphoto of the compact nanometer size granule enhancement layer of strengthened coat obtained in embodiment 1.
Fig. 2 is the microtextured composite construction of the compact nanometer size granule enhancement layer of strengthened coat obtained in embodiment 1
Schematic diagram.
Fig. 3 is strengthened coat obtained in embodiment 1 in the hardness figure at coating outer surface different distance.
Fig. 4 is strengthened coat obtained in embodiment 2 in the hardness figure at coating outer surface different distance.
Fig. 5 is strengthened coat obtained in embodiment 3 in the hardness figure at coating outer surface different distance.
（Five）Specific embodiment
Technical scheme is described further with reference to specific embodiment, but protection scope of the present invention is not
It is limited to this：
The titanium alloy substrate trade mark selected in embodiment is TC4, and the removing surfaces such as oil removing, rust cleaning are carried out first, then will
Work surface is milled to 600# sand paper in advance, cleans and dries.
Embodiment 1：
1. strengthening surface precoats special reinforcing material, and composition is：Ti73%, alloy（Al：V=1：0.65）8.1%th,
TiN8.9%, remaining is binding agent（502 glue：Banana oil：E-44 types epoxy resin=1:2:1）.
2. laser treatment, laser power 2000W, spot diameter 3.5mm, sweep speed 180mm/min, amount of lap 10%,
Laser irradiation region domain is protected using Ar gas.
As shown in figure 3, can obtain complex intensifying layer in the range of workpiece surface 1.5mm, wherein surface highest hardness is more than
380HV, in coating hardness between 350~380HV and downward trend in gradient, complex intensifying layer efficient hardening depth（With >=
350HV is counted）More than 0.8mm.
Embodiment 2：
1. strengthening surface precoats special reinforcing material, and composition is：Ti72%, alloy（Mo：Al：V=1：8：1）8%th,
BN1.6%, remaining is binding agent（502 glue：Banana oil：E-44 types epoxy resin=1:2:1）.
2. laser treatment, laser power 1200W, spot diameter 4mm, sweep speed 0.2m/min, amount of lap 20%, use
Ar gas is protected to laser irradiation region domain.
As shown in figure 4, can obtain complex intensifying layer in the range of workpiece surface 1.5mm, wherein surface highest hardness is more than
480HV, substrate hardened layer hardness between 350~480HV and downward trend in gradient, complex intensifying layer efficient hardening depth
（In terms of >=350HV）More than 0.8mm.
Embodiment 3：
1. strengthening surface precoats special reinforcing material, and composition is：Simple substance 73%, alloy（Al：V=1：0.65）8.1%th,
TiN8.9%, remaining is binding agent（502 glue：Banana oil：E-44 types epoxy resin=1:2:1）.
2. laser treatment, laser power 2000W, spot diameter 3.5mm, sweep speed 180mm/min, amount of lap 10%,
Laser irradiation region domain is protected using Ar gas.
3. the preset pure titanium material of strengthening surface, composition is：Pure Ti80%, remaining is binding agent（502 glue：Banana oil：E-
44 type epoxy resin=1:2:1）.
4. laser treatment, laser power 2300W, spot diameter 3.5mm, sweep speed 180mm/min, amount of lap 10%,
Laser irradiation region domain is protected using Ar gas.
5. the 1-4 that repeats the above steps is counted 3 times.
As shown in figure 5, can be had " hard-soft-hard " alternate multilayer sandwiched structure to answer in the range of the 3.6mm of surface
Strengthening layer is closed, wherein surface highest hardness is more than 500HV, hardness soft and hard alternation change in coating, and downward trend in gradient, multiple
Close strengthening layer efficient hardening depth（In terms of >=350HV）More than 3mm.
Claims (9)
1. a kind of titanium alloy laser strengthened coat with spontaneous nano-particle reinforcement, its preparation method comprises the following steps：
(1) surface cleaning treatment is carried out to titanium alloy surface pending area；
(2) the preset special reinforcing material powder of titanium alloy surface pending area after step (1) treatment and binding agent it is mixed
Compound, laser irradiation is carried out according to surface geometry configuration, using protective atmosphere to laser action area in laser action process
Protected, so as to obtain strengthened coat in titanium alloy surface；The special reinforcing material powder is the mixed of following three classes material
And powder：1. Ti simple substance, 2. alloy, 3. nitrogen-containing compound, described alloy are selected from the alloy that following any several metals are formed：
W, Mo, V, Al, Zr, Cr, Ni, Fe, described nitrogen-containing compound are that at 500~4000 DEG C can participate in melt tank reaction and provide N
The compound of element；Counted as 100% with the mixture quality of special reinforcing material powder and binding agent, the quality percentage of wherein Ti
Than between 40~90%, the mass percent of alloy between 0~16%, the mass percent of nitrogen-containing compound 0.5~
Between 15%, and the Zhi of binding agent measures Bai Fen Bi≤50%；
The described titanium alloy laser strengthened coat with spontaneous nano-particle reinforcement includes compact nanometer size granule enhancement layer
And interface transition layer, without large scale dendritic crystalline strengthen phase, the compact nanometer size granule enhancement layer have particle diameter≤
The close pile structure feature of superfine nano particle of 50nm, microexamination is in texture shape form, its thickness>700μm；Interface transition layer position
Between compact nanometer size granule enhancement layer and titanium alloy substrate, thickness is between 100-600 μm；Interface transition layer and cause
Hardness transition between close nanoscale particle enhancement layer is also ladder for the hardness transition between gradient transition, with titanium alloy substrate
Spend and cross.
2. titanium alloy laser strengthened coat as claimed in claim 1, it is characterised in that：With special reinforcing material powder and bonding
The gross mass of agent is 100% meter, and the wherein mass percent of Ti is 51~90%, and the mass percent of alloy is 3~14%, is contained
The mass percent of nitrogen compound is 1~12.8%, and the mass percent of binding agent is 5~40%.
3. titanium alloy laser strengthened coat as claimed in claim 2, it is characterised in that：With special reinforcing material powder and bonding
The gross mass of agent is 100% meter, and the wherein mass percent of simple substance is 59~85.5%, the mass percent of alloy for 3.5~
13.5%, the mass percent of nitrogen-containing compound is 1~11%, and the mass percent of binding agent is 10~30%.
4. the titanium alloy laser strengthened coat as described in one of claims 1 to 3, it is characterised in that：Described nitrogen-containing compound
It is following a kind of or any several combination：TiN、BN、Ti(C,N).
5. the titanium alloy laser strengthened coat as described in one of claims 1 to 3, it is characterised in that：The alloy is Al, V, Mo
With the combination of Zr, the wherein mass ratio of Al, V, Mo and Zr is 1：0.05~0.95：0.05~0.45：0.05~0.55；Or institute
The combination that alloy is Al, V and Mo is stated, the wherein mass ratio of Al, V and Mo is 1：0.10~0.76：0.05~0.35；Or it is described
Alloy is the combination of Al and V, and the mass ratio of wherein Al and V is 1：0.45~0.85.
6. the titanium alloy laser strengthened coat as described in one of claims 1 to 3, it is characterised in that：Preparing special strengthening material
During the mixture of feed powder end and binding agent, Ti simple substance and alloy are first made pre-made powder, are then mixed with nitrogen-containing compound again,
Or Ti simple substance is directly mixed with alloy and nitrogen-containing compound three.
7. the titanium alloy laser strengthened coat as described in one of claims 1 to 3, it is characterised in that：Described binding agent is glue
Water, banana oil, cellulose or epoxy resin.
8. the titanium alloy laser strengthened coat as described in one of claims 1 to 3, it is characterised in that：According to surface geometry configuration
Selection it is certain it is shaped after light beam carry out laser treatment, it is described it is shaped after light beam be circular light spot or ring-shaped light spot light
Beam；During using circular light spot, focal point spot diameter is between 0.5mm~60mm；During using ring-shaped light spot, in focal point hot spot
Diameter is not less than 0.5mm, and overall diameter is not more than 60mm；The technological parameter of described laser treatment is as follows：Using the continuous spoke of laser
According to laser power >=300W, laser power density >=104W/cm2, sweep speed >=0.01m/min, amount of lap 5 when multiple tracks is scanned
~90%.
9. titanium alloy laser strengthened coat as claimed in claim 8, it is characterised in that：The technological parameter of described laser treatment
It is as follows：Using laser continuous irradiation, 600~2500W of laser power, laser power density 104~106W/cm2, sweep speed
0.05~0.8m/min, amount of lap 10~30% when multiple tracks is scanned.
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| CN109957801A (en) * | 2017-12-25 | 2019-07-02 | 财团法人金属工业研究发展中心 | Surface modification method and products thereof |
| CN108070740B (en) * | 2017-12-28 | 2020-04-21 | 沈阳大陆激光技术有限公司 | Laser repair material for repairing titanium alloy valve core and valve seat |
| CN111485137B (en) * | 2020-05-19 | 2021-11-05 | 北京工业大学 | Preparation method of coating material for strengthening ocean lifting platform bolt oil cylinder rod |
| CN112522663A (en) * | 2020-11-05 | 2021-03-19 | 浙江工业大学 | Titanium alloy surface texturing synchronous nitriding process based on scanning galvanometer |
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| DE3917211A1 (en) * | 1989-05-26 | 1990-11-29 | Aesculap Ag | METHOD FOR PRODUCING A HARDENED SURFACE IN JOINT ENDOPROTHESES |
| CN103042759B (en) * | 2012-09-27 | 2015-10-07 | 浙江工业大学 | A kind of class sandwich structure strengthened coat of precipitate hardened stainless steel face |
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