CN105154872B - A kind of laser manufacturing process that Ni based alloy functionally gradient material (FGM)s are prepared on titanium alloy - Google Patents
A kind of laser manufacturing process that Ni based alloy functionally gradient material (FGM)s are prepared on titanium alloy Download PDFInfo
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- CN105154872B CN105154872B CN201510560572.XA CN201510560572A CN105154872B CN 105154872 B CN105154872 B CN 105154872B CN 201510560572 A CN201510560572 A CN 201510560572A CN 105154872 B CN105154872 B CN 105154872B
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Abstract
The invention belongs to technical field of laser processing, is related to a kind of laser manufacture method that Ni based alloy high temperature resistant functionally gradient material (FGM)s are prepared on titanium alloy, is mainly used in the preparation of titanium alloy high-temperature-resistant layer, improves the hot properties of titanium alloy.From Ni based alloy of the high-temperature stability better than titanium alloy as high-temperature-resistant layer, using laser melting and coating process, by adding two kinds of intermediate layers of V Cr and stainless steel, Ni based alloy gradient exotic materials are finally prepared on titanium alloy.The Ni based alloys high-temperature-resistant layer of preparation is combined very well with titanium alloy substrate, surface flawless defect.
Description
Technical field
The invention belongs to technical field of laser processing, it is related to and a kind of swashing for Ni based alloy functionally gradient material (FGM)s is prepared on titanium alloy
Light manufacturing process, it is mainly used in the preparation of titanium alloy surface high-temperature-resistant layer, improves the hot properties of titanium alloy.
Background technology
The development of hypersonic aircraft and high-performance fighter aircraft of new generation, the airframe high-temperature component such as leading edge of a wing,
Vertical fin leading edge, engine hot parts such as outer combustion case proposes higher requirement to heat-resisting quantity, but it is also contemplated that flies
The problem of machine loss of weight, therefore could meet to design there is an urgent need to develop lightweight, high-performance, resistant to elevated temperatures new structure functional material
It is required that.At present aircraft and engine hot parts it is more use Ni based high-temperature alloys, as outside engine combustion room casing use
GH4169, and the more titanium alloy material that uses of light-weight high-strength material, it is contemplated that the characteristic of two kinds of materials, two kinds of materials are combined,
Ni based high-temperature alloys are prepared i.e. on titanium alloy substrate, a kind of new structure functional material is formed, meets two kinds of lightening fire resistant
Performance, so the development of titanium alloy/Ni based high-temperature alloy temperature function functionally gradient material (FGM)s just has its clear and definite Project R＆D demand back of the body
Scape.
Two kinds of material thermal expansion coefficient differences of titanium alloy and Ni based high-temperature alloys are big, and two kinds of material reactions can produce a variety of gold
Compound between category, cause two kinds of material compatibility extreme differences, directly in conjunction with can not realize.Need to carry out dividing for intermediate layer transition composition
Analysis and development.
The content of the invention
The purpose of the present invention is to propose to a kind of laser that Ni based alloy high temperature resistant functionally gradient material (FGM)s are prepared on titanium alloy material
Manufacture method, it is mainly used in the preparation of titanium alloy surface high-temperature-resistant layer, improves the hot properties of titanium alloy.
The particular content of technical solution of the present invention is：
(1) Ni based alloys and intermediate layer dusty material, intermediate layer material are prepared using argon gas powder by atomization mode
Expect for two kinds, respectively V-Cr alloys and stainless steel alloy, the Cr content volumes fraction ranges 5.0% of V-Cr alloys~
12.0%, the C content of stainless steel is controlled below 0.05%, and Cr contents 8%~20%, Ni contents are controlled below 10%, powder
Last granularity is the mesh of 150 mesh~325；
(2) the thick V-Cr alloy-layers of 0.3~0.5mm are prepared on titanium alloy base material using the method for laser melting coating first,
Then stainless steel alloy thick 0.2~0.5mm of laser melting coating on V-Cr layers, finally on stainless steel layer laser melting coating 0.2~
Ni based high-temperature alloys thick 0.5mm, realize titanium alloy to the gradient transition of Ni based alloys；
(3) under Ar gas shieldeds or vacuum environment, overall stress relief annealing process, annealing region are carried out：650 DEG C~
750℃。
The present invention has the advantage that and beneficial effect
The present invention prepares Ni based alloy high temperature resistant functionally gradient material (FGM)s, laser using laser melting and coating technique on titanium alloy material surface
Cladding has the advantage that when preparing functionally gradient material (FGM)：The energy density of laser beam is high, and firing rate is fast, to titanium alloy base material
Heat affecting is smaller, and the depth for fusing into titanium alloy base material can be controlled in below 0.1mm, and residual stress caused by postwelding is small, causes base
The deformation of material is small, the generation of control surface crackle；The thickness range of cladding layer is larger, 0.1~2.0mm of individual layer cladding thickness；Can
The forming thickness of accurate control functionally gradient material (FGM).
The present invention prepares titanium alloy/Ni based alloy high temperature resistant functionally gradient material (FGM)s, most critical be exactly intermediate layer design
And optimization, realize that titanium alloy is that V- is prepared on titanium alloy first to the gradient transition of nickel base superalloy from two kinds of materials
Cr alloys, because Ti and V and Cr is uniform grain phasor, it can completely dissolve each other, stainless steel alloy, Fe are then prepared on V-Cr layers
It is uniform grain phasor with V and Cr, can also dissolves each other completely, while controls the C content in stainless steel material to make below 0.05%
Stainless steel intermediate layer has preferable ductility to alleviate the residual stress in functionally gradient material (FGM) preparation process, controls in stainless steel
Ni contents, to prevent generation Ti-Ni weld metal zone brittle intermetallic things after the Ti phase counterdiffusion in Ni and titanium alloy, are led below 5%
Cracking is caused, Fe and Ni can also dissolve each other completely in addition, by the design and optimization of above intermediate layer material, realize titanium alloy/Ni
The intact preparation of based alloy high temperature resistant functionally gradient material (FGM), surface flawless defect, fusion rate is reachable between each layer of functionally gradient material (FGM)
100%, with reference to fine.The functionally gradient material (FGM) has the good characteristic such as lightweight, high-strength, unilateral high temperature resistant, may extend to high-speed flight
The material development of device and high thrust-weight ratio engine hot-end component.Embodiment：
Technical solution of the present invention is described in further detail below with reference to example：
The step of this method is：
(1) Ni based alloys and intermediate layer dusty material are prepared using argon gas powder by atomization mode, intermediate layer material is
Two kinds are respectively V-Cr alloys and stainless steel alloy, and the Cr content volumes fraction range 8.0%~10.0% of V-Cr alloys is stainless
The C content of steel is controlled below 0.03%, Cr contents 10%~15%, and Ni contents are controlled below 5%.Powder size is 150
The mesh of mesh~325；
(2) removing surface before preparing, is polished using wire wheel and removes oxidation film on titanium alloy surface, and metal is exposed in visual inspection
Background color, then scrubbed with acetone；
(3) the thick V-Cr alloy-layers of 0.3~0.5mm are prepared on titanium alloy base material using the method for laser melting coating first,
Then stainless steel alloy thick 0.3~0.5mm of laser melting coating on V-Cr layers, finally Laser Cladding Ni-base is high on stainless steel layer
Temperature alloy, realize titanium alloy to the gradient transition of Ni based alloys；
(4) after the completion of prepared by high temperature resistant functionally gradient material (FGM), under Ar gas shieldeds or vacuum environment, overall stress relief annealing is carried out
Processing, annealing region：650 DEG C~750 DEG C, furnace cooling.
Example one
GH4169 high temperature resistant functionally gradient material (FGM)s are prepared on TC4 titanium alloy sheets
1.TC4 titanium alloy quasis are standby
TC4 titanium alloy sheets are processed, size is 50mm × 50mm × 10mm.
2. implementation process
(1) GH4169 powder and V-Cr and stainless steel intermediate layer alloy powder, V- are prepared using argon gas powder by atomization mode
The percentage by volume of Cr alloys is respectively 91.3% and 8.7%, the C content 0.03% of stainless steel, Cr contents 13%, Ni contents
5%, powder size is the mesh of 150 mesh~325；
(2) removing surface before preparing, polished using wire wheel and remove TC4 titanium alloy plate surface film oxides, visual inspection
Expose metal background color, then scrubbed with acetone；
(3) V-Cr for being prepared 50mm × 50mm × 0.5mm on titanium alloy base material using the method for laser melting coating first is closed
Layer gold, then on V-Cr layers laser melting coating 50mm × 50mm × 0.5mm stainless steel alloy, the last laser on stainless steel layer
Cladding 50mm × 50mm × 0.5mm GH4169 high temperature resistants once, realize TC4 titanium alloys to the gradient mistake of GH4169 high temperature alloys
Cross；
(4) after the completion of prepared by high temperature resistant functionally gradient material (FGM), under Ar gas shieldeds or vacuum environment, overall stress relief annealing is carried out
Processing, annealing schedule：650 DEG C × 2h, furnace cooling.
Compared with prior art, the GH4169 high temperature resistant gradients prepared using technical solution of the present invention on TC4 titanium alloys
Material, through fluoroscopic examination flawless defect, while TC4 titanium alloy lightweight natures are ensured, significantly improve TC4 material surfaces
High-temperature stability.
Claims (2)
- A kind of 1. laser manufacturing process that Ni based alloy functionally gradient material (FGM)s are prepared on titanium alloy, it is characterised in that：The step of this method Suddenly it is：(1) Ni based alloys and intermediate layer dusty material are prepared using argon gas powder by atomization mode, middle transition layer material is Two kinds, respectively V-Cr alloys and stainless steel, the Cr content volumes fraction range 5.0%~12.0% of V-Cr alloys, stainless steel C content control below 0.05%, Cr contents 8%~20%, Ni contents control below 10%, Ni base alloy powders and in Between transition zone powder size be the mesh of 150 mesh~325；(2) the thick V-Cr alloy-layers of 0.3~0.5mm are prepared on titanium alloy base material using the method for laser melting coating first, then The stainless steel thick 0.2~0.5mm of laser melting coating on V-Cr alloy-layers, finally 0.2~0.5mm of laser melting coating on stainless steel layer Thick Ni based high-temperature alloys, realize titanium alloy to the gradient transition of Ni based alloys；(3) under Ar gas shieldeds or vacuum environment, overall stress relief annealing process, annealing region are carried out：650 DEG C~750 ℃。
- 2. a kind of laser manufacturing process that Ni based alloy functionally gradient material (FGM)s are prepared on titanium alloy according to claim 1, V- The Cr content volumes fraction of Cr alloys is 8.0%~10.0%, and the C content of stainless steel is controlled below 0.03%, Cr contents 10%~15%, Ni content are controlled below 5%.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108216650A (en) * | 2017-12-19 | 2018-06-29 | 北京有色金属研究总院 | A kind of gradient-structure air intake duct |
| CN108216574A (en) * | 2017-12-21 | 2018-06-29 | 北京有色金属研究总院 | A kind of gradient-structure lattice fin |
| CN108480630B (en) | 2018-03-30 | 2019-03-12 | 北京科技大学 | A kind of device and method preparing functionally gradient material (FGM) based on selective laser melting process |
| CN109513925B (en) * | 2018-12-03 | 2021-05-25 | 航天特种材料及工艺技术研究所 | Thin-wall large-temperature-gradient structural component and laser direct deposition preparation method thereof |
| CN109570765B (en) * | 2019-01-04 | 2020-12-18 | 沈阳工业大学 | Manufacturing method for laser material increase connection of titanium alloy and nickel-based superalloy |
| CN111074269A (en) * | 2020-01-02 | 2020-04-28 | 沈阳中钛装备制造有限公司 | Titanium alloy wear-resistant coating and preparation method thereof |
| CN111230114A (en) * | 2020-02-28 | 2020-06-05 | 沈阳工业大学 | Laser additive manufacturing method of TC4/IN625 functional gradient composite material |
| CN111560611A (en) * | 2020-05-07 | 2020-08-21 | 上海交通大学 | Method for preparing transition layer of nickel-based coating on titanium alloy surface by laser cladding |
| CN112497864A (en) * | 2020-11-05 | 2021-03-16 | 中国航发北京航空材料研究院 | High-temperature-resistant light metal cladding material and preparation method thereof |
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