CN109518037A - A kind of Ti-18Mo-xSi alloy material and preparation method thereof of SPS preparation - Google Patents
A kind of Ti-18Mo-xSi alloy material and preparation method thereof of SPS preparation Download PDFInfo
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- 239000000956 alloy Substances 0.000 title claims abstract description 57
- 238000002360 preparation method Methods 0.000 title claims abstract description 31
- 238000005245 sintering Methods 0.000 claims abstract description 41
- 239000000843 powder Substances 0.000 claims abstract description 30
- 238000000498 ball milling Methods 0.000 claims abstract description 20
- 239000011812 mixed powder Substances 0.000 claims abstract description 20
- 229910052750 molybdenum Inorganic materials 0.000 claims abstract description 14
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 14
- 238000005275 alloying Methods 0.000 claims abstract description 9
- 239000011863 silicon-based powder Substances 0.000 claims abstract description 9
- 238000000713 high-energy ball milling Methods 0.000 claims abstract description 6
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 5
- 239000010439 graphite Substances 0.000 claims abstract description 5
- 238000002156 mixing Methods 0.000 claims abstract 2
- 229910045601 alloy Inorganic materials 0.000 claims description 28
- 238000000034 method Methods 0.000 claims description 19
- 229910052710 silicon Inorganic materials 0.000 claims description 9
- 230000008569 process Effects 0.000 claims description 8
- 238000010438 heat treatment Methods 0.000 claims description 7
- 238000001035 drying Methods 0.000 claims description 6
- 238000000227 grinding Methods 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 4
- 238000010792 warming Methods 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 2
- 238000003825 pressing Methods 0.000 claims description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims 1
- 238000004321 preservation Methods 0.000 claims 1
- 229910001069 Ti alloy Inorganic materials 0.000 abstract description 18
- 239000010936 titanium Substances 0.000 abstract description 18
- 239000004615 ingredient Substances 0.000 abstract 1
- 238000007254 oxidation reaction Methods 0.000 description 20
- 230000003647 oxidation Effects 0.000 description 18
- 230000000052 comparative effect Effects 0.000 description 12
- 230000003026 anti-oxygenic effect Effects 0.000 description 8
- 239000011248 coating agent Substances 0.000 description 5
- 238000000576 coating method Methods 0.000 description 5
- 239000004677 Nylon Substances 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 229920001778 nylon Polymers 0.000 description 4
- 238000009792 diffusion process Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 229910000765 intermetallic Inorganic materials 0.000 description 3
- 238000002490 spark plasma sintering Methods 0.000 description 3
- 229910016006 MoSi Inorganic materials 0.000 description 2
- 229910017305 Mo—Si Inorganic materials 0.000 description 2
- 229910000676 Si alloy Inorganic materials 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 2
- 229910011214 Ti—Mo Inorganic materials 0.000 description 2
- 238000005054 agglomeration Methods 0.000 description 2
- 230000002776 aggregation Effects 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000003701 mechanical milling Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 238000001291 vacuum drying Methods 0.000 description 2
- 238000005303 weighing Methods 0.000 description 2
- 208000037656 Respiratory Sounds Diseases 0.000 description 1
- 229910004339 Ti-Si Inorganic materials 0.000 description 1
- 229910009871 Ti5Si3 Inorganic materials 0.000 description 1
- 229910000883 Ti6Al4V Inorganic materials 0.000 description 1
- 229910010978 Ti—Si Inorganic materials 0.000 description 1
- UGACIEPFGXRWCH-UHFFFAOYSA-N [Si].[Ti] Chemical compound [Si].[Ti] UGACIEPFGXRWCH-UHFFFAOYSA-N 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000003064 anti-oxidating effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010316 high energy milling Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000010309 melting process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229910021344 molybdenum silicide Inorganic materials 0.000 description 1
- GALOTNBSUVEISR-UHFFFAOYSA-N molybdenum;silicon Chemical compound [Mo]#[Si] GALOTNBSUVEISR-UHFFFAOYSA-N 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- 229910021332 silicide Inorganic materials 0.000 description 1
- FVBUAEGBCNSCDD-UHFFFAOYSA-N silicide(4-) Chemical compound [Si-4] FVBUAEGBCNSCDD-UHFFFAOYSA-N 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000010301 surface-oxidation reaction Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 229910021350 transition metal silicide Inorganic materials 0.000 description 1
- 230000004584 weight gain Effects 0.000 description 1
- 235000019786 weight gain Nutrition 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C14/00—Alloys based on titanium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/10—Sintering only
- B22F3/105—Sintering only by using electric current other than for infrared radiant energy, laser radiation or plasma ; by ultrasonic bonding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/04—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/04—Making non-ferrous alloys by powder metallurgy
- C22C1/045—Alloys based on refractory metals
- C22C1/0458—Alloys based on titanium, zirconium or hafnium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/04—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling
- B22F2009/043—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling by ball milling
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
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Abstract
A kind of Ti-18Mo-xSi alloy material and preparation method thereof of SPS preparation, it is related to titanium alloy preparation field, the preparation method is first, Ti powder, Mo powder and Si powder are subjected to high-energy ball milling after mixing, keep its partially-alloyed, the resulting powder of ball milling is sieved again, it is dry, then mixed-powder is poured intoGraphite jig in, discharge plasma sintering is carried out in DR.SINTER type SPS-3.20 equipment, so that the further alloying of Ti, Mo and Si powder.Uniform inoxidizability of Ti-18Mo-xSi alloy material ingredient provided by the invention etc. is improved to some extent, and is with a wide range of applications in fields such as aerospace, war industry, navigation, automobiles.
Description
Technical field
The present invention relates to a kind of titanium alloy preparation field, especially a kind of high-energy ball milling-discharge plasma sintering prepares Ti-
18Mo-xSi field of alloy material preparation.
Background technique
Titanium alloy has many advantages, such as that specific strength is high, plasticity is good, corrosion-resistant, good biocompatibility, aerospace, navigation,
The fields such as biomedicine, automobile have a wide range of applications.However, titanium alloy under high temperature environment titanium alloy antioxygenic property compared with
Difference limits it and widely applies.For example, widely used Ti6Al4V alloy high-temp antioxygenic property is mutually on duty in business,
Up to 550 DEG C or so of operating temperature of the compressor blade of traditional titanium-base alloy production.It can be seen that high-temperature oxidation resistance
The problem of being titanium alloy broader applications urgent need to resolve.
Currently, many domestic and foreign scholars can be carried out a large amount of research to the inoxidizability of titanium alloy, by titanium alloy
The methods of surface prepares coating, addition alloy element are transformed existing titanium alloy, to improve its antioxygenic property.
The influence of Dai Jingjie et al. research Nb coating on titanium alloy surface oxidation-resistant performance, the results showed that Nb coating makes titanium alloy surface shape
At fine and close oxidation film, effectively oxygen is prevented further to spread.However as the increase of oxidization time, surface Nb coating is easy
It peels off and fails, so that titanium alloy antioxygenic property drastically reduces, while excessive Nb coating can reduce the power of titanium alloy instead
Performance is learned, and improves the density of titanium alloy, is widely applied to limit it.Si is as a kind of very important alloy member
The silica in surface oxide layer can be generated in element in oxidation process, hinders oxygen to be diffused into inside alloy, to make Ti-
Si alloy has excellent antioxygenic property.Meanwhile with other intermetallic compound phase ratios, transition metal silicide (such as density
Lower Ti5Si3The best MoSi with oxidation susceptibility2) fusing point height, medium density, at high temperature with excellent mechanical property.
Ti-Mo-Si intermetallic compound has the advantages that Ti-Si and Mo-Si, and the alloying between Ti and Mo improves Ti-Mo-
The Room-Temperature Fracture Toughness and elevated temperature strength of Si alloy.KIM et al. is applied using plasma thermal sprayed technique on the surface of Ti-Mo alloy
Si studies its antioxygenic property, the results showed that laser surface melting process can improve the antioxygenic property of Si spraying alloy, together
When, molybdenum silicides (main component MoSi is formd in subsequent technique2), antioxygenic property is further improved.
But traditional vacuum sintering technology titanium alloy obtained is of low quality, there are more hole, the defects of crackle, and discharges
Plasma agglomeration has many advantages, such as that warming and cooling rate is fast, sintering time is short, sintering temperature is low, consistency is high, can be effectively improved
The problems such as component segregation caused by traditional vacuum is sintered and nonuniform organization.Wherein, discharge plasma sintering (Spark Plasma
Sintering, abbreviation SPS)
Summary of the invention
The purpose of the present invention is the problems not high for existing titanium alloy overall performance, invent a kind of using " high energy ball
The Ti-18Mo-xSi alloy material of mill-discharge plasma sintering " technique preparation.This method is easy to operate, low in cost, obtains
Titanium alloy material in titanium silicon and molybdenum silicon intermetallic compound content it is higher, comprehensive performance is preferable.
Technical solution of the present invention first is that:
A kind of Ti-18Mo-xSi alloy material of high-energy ball milling-discharge plasma sintering preparation, by Ti powder, Mo powder and Si
Powder discharge plasma agglomeration is prepared；The component of Ti-18Mo-xSi mixed-powder is to calculate by percentage to the quality, wherein
Ti powder: (82-x) wt.%, Mo powder: 18wt.%, Si powder: the value range of xwt.%, x are 0,0.5,1 and 2, the quality of matrix
The sum of percentage is 100%.
Technical solution of the present invention second is that:
A kind of high-energy ball milling described in claim 1-discharge plasma sintering preparation Ti-18Mo-xSi alloy material
Preparation method is prepared by following steps:
High-energy ball milling mixes powder: first pressing composition and prepares Ti-18Mo-xSi mixed-powder, is put into ball grinder, is placed in ball mill
With certain ball milling parameter ball milling, so that three kinds of powder of Ti, Mo and Si powder are partially-alloyed, by gained mixed-powder mistake after ball milling
300 meshes are placed in drying in vacuum oven.
Discharge plasma sintering: mixed-powder pours intoGraphite jig in, in DR.SINTER type SPS-3.20
Discharge plasma sintering is carried out in equipment so that Ti, Mo, Si and its with the further alloying of nanometer GNP.
Further, the high-energy-milling are as follows: ratio of grinding media to material (8~12): 1,300~500r/min of revolving speed, ball milling
Time at least 48h, every ball milling 50min shut down 10min.Such ratio of grinding media to material can make mixed metal powder uniformly thin enough
Change, and can guarantee that mixed-powder first reaches alloying at high speed；Secondly, in order to guarantee the subsequent safety for taking powder,
In mechanical milling process, needs time enough that entire ball milling system pause is allowed to buffer, reduce the energy in alloyed powder.
Further, the alloy powder after the ball milling is placed in vacuum oven, is warming up to 60~80 DEG C with drying box
After keep the temperature at least 4h, cross 300 meshes.The excessive moisture in alloyed powder can be removed in this way, be conducive to the molding matter of subsequent idiosome
Amount.It is brought rapidly up, the reaction time of whole system can be saved, elements diffusion can be improved in pressure maintaining process especially therein
Rate, further increase alloying；Meanwhile the Forming Quality of sintering can be improved in pressure maintaining, improves the consistency of alloy.
Further, the discharge plasma sintering process are as follows: heating rate is 100 DEG C/min, and sintering temperature is extremely
1200 DEG C, and 5min is kept the temperature at this temperature, pressure 50Mpa, furnace cooling after heating, rate is 25 DEG C/min.
The beneficial effects of the present invention are:
(1) present invention innovatively proposes a kind of novel " high-energy ball milling-discharge plasma sintering " preparation process, in mixed powder
Stage keeps Ti, Mo and Si powder partially-alloyed by high-energy ball milling, in sintering process, further alloying.With ordinary powder
Metallurgical technology is compared, this technique makes four kinds of powder metallurgyizatioies more abundant, provides a kind of industrialization for titanium composite material
The preparation method of production.
(2) a kind of " high-energy ball milling-discharge plasma sintering " preparation Ti-18Mo-xSi alloy material provided by the invention and
Preparation method is easy to operate, Yi Shixian, economical.
(3) i-18Mo-xSi alloy material prepared by the present invention is compared to common titanium maxter alloy material, hardness and anti-
Oxidation susceptibility etc. is improved to some extent.
(4) it has well solved to high-strength, the demand problem of the high performance titanium alloy such as oxidation resistent susceptibility.
Detailed description of the invention
Fig. 1 is comparative example Ti-18Mo of the present invention and embodiment Ti-18Mo-0.5Si alloy sintering XRD diffraction pattern；
Fig. 2 is the sintering microscopic appearance of Ti-18Mo-1Si alloy material in comparative example Ti-18Mo of the present invention and embodiment；
Fig. 3 is Ti-18Mo-2Si alloy oxidation kinetic curve in comparative example Ti-18Mo of the present invention and embodiment.
Specific embodiment
Specific embodiments of the present invention will be described in detail with reference to the accompanying drawings and examples, but the present invention not only limits
In embodiment.
Embodiment 1.
As shown in Figure 1.
A kind of high-energy ball milling-discharge plasma sintering prepares Ti-18Mo-xSi alloy material: Ti-18Mo-0.5Si by with
Lower section method is prepared:
Firstly, preparing the mixed-powder of Ti, Si and Mo powder of 30g, wherein Ti silty amount is 82wt.% (24.45g), Mo
Silty amount is 18wt.% (5.4g), and Si silty amount is 0.5wt.% (0.15g), and mixed-powder is placed in a beaker and is stirred evenly；
It is placed in 500ml nylon ball grinder secondly, first weighing 240g agate ball according to ratio of grinding media to material 8:1, then by mixed-powder
It is placed in nylon ball grinder, seals；
Then, ball grinder is mounted on planetary ball mill, starts ball milling, ball milling parameter is set as 500r/min, ball milling
After 50min shutdown 10min, ball milling 48h, the powder in ball grinder is taken out；
The mixed-powder of taking-up is crossed into 300 meshes, after obtaining the powder of uniform granularity, is placed it in vacuum oven
60~80 DEG C of vacuum drying at least 4h, obtain required powder；
Finally, mixed-powder pours intoGraphite jig in, carried out in DR.SINTER type SPS-3.20 equipment
Discharge plasma sintering, so that the further alloying of Ti, Mo and Si powder.Discharge plasma sintering process are as follows: heating rate is
100 DEG C/min, sintering temperature keeps the temperature 5min to 1200 DEG C at this temperature, pressure 50Mpa, cold with furnace after heating
But, rate is 25 DEG C/min.
Comparative example.
The preparation method of Ti-18Mo alloy.
The hardness of Ti-18Mo alloy is 724.32Hv, Ti-18Mo alloy average oxidation speed K at 700 DEG C+It is 0.18.
Fig. 1 is comparative example Ti-18Mo of the present invention and embodiment Ti-18Mo-0.5Si alloy sintering XRD diffraction pattern.Comparison is real
It applies example 1 and comparative example to find, the comprehensive performance of Ti-18Mo-0.5Si alloy material obtained is more excellent after addition 0.5wt.%Si
It is different, wherein the hardness ratio Ti-18Mo alloy of Ti-18Mo-0.5Si alloy material improves 21% (876.43Hv VS
724.32Hv), the average oxidation speed K at 700 DEG C+To reduce 50% (0.09gm-2·h-1VS 0.18g·m-2·h-1)。
Embodiment 2.
As shown in Figure 2.
A kind of high-energy ball milling-discharge plasma sintering preparation Ti-18Mo-xSi alloy material: Ti-18Mo-1Si is by following
Method is prepared:
The present embodiment and embodiment 1 are similar, the difference is that the mass fraction of Si powder is mentioned by 0.5wt.% (0.15g)
Up to 1wt.% (0.3g), correspondingly, the mass fraction of Ti powder are reduced to 81wt.% by 81.5wt.% (24.45g)
(24.3g)。
Comparative example
The preparation method of Ti-18Mo alloy.
Fig. 2 is the sintering microscopic appearance of Ti-18Mo-1Si alloy material in comparative example Ti-18Mo of the present invention and embodiment；
Through analyzing, the solid-solid diffusion reaction between Ti-Mo, the white of alloy surface mainly occur during the sintering process for Ti-18Mo alloy
Particle is likely to be the impurity introduced in mechanical milling process.Add Si element after Ti-18Mo-0.5Si alloy compactness some
Perhaps on the one hand raising is to generate metal silicide since Si and Ti, Mo can react at high temperature, be on the other hand due to
Si fusing is filled with the stomata of alloy；The comprehensive performance ratio of Ti-18Mo-1Si alloy material made from after addition 1wt.%Si
Ti-18Mo is more excellent, wherein the hardness ratio Ti-18Mo alloy of Ti-18Mo-1Si alloy material improves 28.5%
(931.46Hv VS 724.32Hv), the average oxidation speed K at 700 DEG C+To reduce 38.8% than Ti-18Mo alloy
(0.11g·m-2·h-1VS 0.18g·m-2·h-1)。
Embodiment 3.
A kind of high-energy ball milling-discharge plasma sintering preparation Ti-18Mo-xSi alloy material: Ti-18Mo-2Si is by following
Method is prepared:
Firstly, preparing the mixed-powder of Ti, Si and Mo powder of 30g, wherein Ti silty amount is 80wt.% (24g), Mo silty
Amount is 18wt.% (5.4g), and Si silty amount is 2wt.% (0.6g), and mixed-powder is placed in a beaker and is stirred evenly；
It is placed in 500ml nylon ball grinder secondly, first weighing 240g agate ball according to ratio of grinding media to material 8:1, then by mixed-powder
It is placed in nylon ball grinder, seals；
Then, ball grinder is mounted on planetary ball mill, starts ball milling, ball milling parameter is set as 500r/min, ball milling
After 50min shutdown 10min, ball milling 48h, the powder in ball grinder is taken out；
The mixed-powder of taking-up is crossed into 300 meshes, after obtaining the powder of uniform granularity, is placed it in vacuum oven
60~80 DEG C of vacuum drying at least 4h, obtain required powder；
Finally, mixed-powder pours intoGraphite jig in, carried out in DR.SINTER type SPS-3.20 equipment
Discharge plasma sintering so that Ti, Mo, Si and its with the further alloying of nanometer GNP.Discharge plasma sintering process are as follows: rise
Warm rate is 100 DEG C/min, and sintering temperature keeps the temperature 5min to 1200 DEG C at this temperature, and pressure 50Mpa, heating terminates
Furnace cooling afterwards, rate are 25 DEG C/min.
Comparative example
The preparation method of Ti-18Mo alloy.
Fig. 3 is Ti-18Mo-2Si alloy oxidation kinetic curve in comparative example Ti-18Mo of the present invention and embodiment, through dividing
Analysis, oxidation are broadly divided into 3 stages, and oxidation initial stage belongs to oxidation boost phase, and weight gain is very fast, this is because each element is in high temperature
It spreads rapidly and is oxidized under effect；Oxidation transition stage is subsequently entered, the chemical reaction between element is obstructed at this time, diffusion resistance
Power continues to increase, and oxidation film continues to thicken；With the increase of oxidization time, curve tends towards stability, and oxidation enters " blunt oxidation " rank
Section.Comparative example 3 and comparative example find, Ti-18Mo-1Si alloy material obtained is comprehensive after addition 2wt.%Si
It can be more more excellent than Ti-18Mo, wherein the hardness ratio Ti-18Mo alloy of Ti-18Mo-2Si alloy material improves 58%
(1146.21Hv VS 724.32Hv), the average oxidation speed K at 700 DEG C+To reduce 33.3% than Ti-18Mo alloy
(0.12g·m-2·h-1VS 0.18g·m-2·h-1).Part that the present invention does not relate to is the same as those in the prior art or can be used existing
There is technology to be realized.
The embodiment is a preferred embodiment of the present invention, but present invention is not limited to the embodiments described above, not
In the case where substantive content of the invention, any conspicuous improvement that those skilled in the art can make, replacement
Or modification all belongs to the scope of protection of the present invention.
Claims (6)
1. the preparation method that a kind of high-energy ball milling-discharge plasma sintering prepares alloy material, which is characterized in that including walking as follows
It is rapid:
High-energy ball milling mixes powder: first pressing composition and prepares Ti-18Mo-xSi mixed-powder, be put into ball grinder, is placed in ball mill and carries out
Gained mixed-powder after ball milling is sieved, is subsequently placed in true so that three kinds of powder of Ti, Mo and Si powder are partially-alloyed by ball milling
Drying in empty drying box；
Discharge plasma sintering: the mixed-powder after drying in vacuum oven is poured into graphite jig, is discharged etc.
Ion sintering, so that the further alloying of Ti, Mo, Si.
2. high-energy ball milling-discharge plasma sintering according to claim 1 prepares the preparation method of alloy material, feature
It is, in high-energy ball milling blending processes of powders: ratio of grinding media to material (8~12): 1,300~500r/min of revolving speed, Ball-milling Time is no less than 48h,
Every ball milling 50min shuts down 10min.
3. high-energy ball milling-discharge plasma sintering according to claim 1 prepares the preparation method of alloy material, feature
It is, the technique in vacuum oven are as follows: after heat preservation is no less than 4h after being warming up to 60~80 DEG C with drying box, cross 300 meshes.
4. high-energy ball milling-discharge plasma sintering according to claim 1 prepares the preparation method of alloy material, feature
It is, discharge plasma sintering are as follows: heating rate is 100 DEG C/min, and sintering temperature is kept the temperature at such a temperature to 1200 DEG C
5min, pressure 50Mpa, furnace cooling after heating, rate are 25 DEG C/min.
5. the preparation method that high-energy ball milling-discharge plasma sintering according to any one of claims 1-4 prepares alloy material
The Ti-18Mo-xSi of preparation, which is characterized in that wherein, Ti powder: (82-x) wt.%, Mo powder: 18wt.%, Si powder: x wt.%,
The value range of x is 0-2, and the sum of mass percent of alloy is 100%.
6. high-energy ball milling-discharge plasma sintering according to claim 5 prepares the preparation method preparation of alloy material
Ti-18Mo-xSi, which is characterized in that x value is 0 or 0.5 or 1 or 2.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110157947A (en) * | 2019-04-04 | 2019-08-23 | 江苏大学 | A kind of SPS sintering Ti-18Mo-0.5Si-xGNP composite material and preparation method |
| CN112663012A (en) * | 2020-12-15 | 2021-04-16 | 南京航空航天大学 | TC11 titanium alloy composite material and preparation method thereof |
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| CN115466869A (en) * | 2022-08-19 | 2022-12-13 | 西安建筑科技大学 | Preparation method of low-cost high-strength Ti-Al-V-Fe alloy material |
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