CN106119649B - A kind of Nb Si Ti Mo B sheet alloys and preparation method thereof - Google Patents
A kind of Nb Si Ti Mo B sheet alloys and preparation method thereof Download PDFInfo
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- 239000000956 alloy Substances 0.000 title claims abstract description 87
- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 84
- 238000002360 preparation method Methods 0.000 title description 10
- 239000000843 powder Substances 0.000 claims abstract description 164
- 238000002844 melting Methods 0.000 claims abstract description 33
- 239000011863 silicon-based powder Substances 0.000 claims abstract description 31
- 238000000034 method Methods 0.000 claims abstract description 25
- 239000000463 material Substances 0.000 claims abstract description 23
- 238000005266 casting Methods 0.000 claims abstract description 21
- 239000000203 mixture Substances 0.000 claims abstract description 19
- 239000011812 mixed powder Substances 0.000 claims abstract description 14
- 238000000227 grinding Methods 0.000 claims abstract description 13
- 239000012535 impurity Substances 0.000 claims abstract description 13
- 238000005245 sintering Methods 0.000 claims abstract description 11
- 238000001291 vacuum drying Methods 0.000 claims abstract description 4
- 239000010936 titanium Substances 0.000 claims abstract description 3
- 229910017262 Mo—B Inorganic materials 0.000 claims description 70
- 239000002245 particle Substances 0.000 claims description 40
- 238000001816 cooling Methods 0.000 claims description 35
- 238000012545 processing Methods 0.000 claims description 21
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 18
- 238000001125 extrusion Methods 0.000 claims description 14
- 238000000498 ball milling Methods 0.000 claims description 12
- 238000005096 rolling process Methods 0.000 claims description 12
- 238000009413 insulation Methods 0.000 claims description 10
- 230000008018 melting Effects 0.000 claims description 10
- 239000002270 dispersing agent Substances 0.000 claims description 9
- 238000010891 electric arc Methods 0.000 claims description 3
- 238000001192 hot extrusion Methods 0.000 abstract description 4
- 238000005098 hot rolling Methods 0.000 abstract description 3
- 239000010955 niobium Substances 0.000 description 63
- 229910020010 Nb—Si Inorganic materials 0.000 description 9
- 229910000765 intermetallic Inorganic materials 0.000 description 8
- 230000005611 electricity Effects 0.000 description 7
- 229910052758 niobium Inorganic materials 0.000 description 7
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 description 7
- 239000006104 solid solution Substances 0.000 description 6
- 239000000243 solution Substances 0.000 description 5
- 239000002023 wood Substances 0.000 description 5
- 238000005275 alloying Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 239000003870 refractory metal Substances 0.000 description 4
- 239000002131 composite material Substances 0.000 description 3
- 230000003026 anti-oxygenic effect Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000005728 strengthening Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 208000010392 Bone Fractures Diseases 0.000 description 1
- 241000555268 Dendroides Species 0.000 description 1
- 206010017076 Fracture Diseases 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 229910001092 metal group alloy Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008450 motivation Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 229910000753 refractory alloy Inorganic materials 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C27/00—Alloys based on rhenium or a refractory metal not mentioned in groups C22C14/00 or C22C16/00
- C22C27/02—Alloys based on vanadium, niobium, or tantalum
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- 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
- C22C1/02—Making non-ferrous alloys by melting
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/16—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of other metals or alloys based thereon
- C22F1/18—High-melting or refractory metals or alloys based thereon
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- Metallurgy (AREA)
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Abstract
The invention provides a kind of Nb Si Ti Mo B sheet alloys, it is made up of the composition of following atomic percent：Si 8%~18%, Ti 7%~13%, Mo 4%~12%, B 0.5%~2.5%, surplus are Nb and inevitable impurity.Present invention also offers a kind of method for preparing the sheet material, comprise the following steps：First, Nb powder, Si powder, Ti powder, Mo powder and B powder are well mixed using the method for wet ball grinding, mixed-powder is obtained after vacuum drying；2nd, vacuum-sintering is carried out, obtains sintered body；3rd, vacuum consumable arc-melting, ingot casting is obtained；4th, hot extrusion, bar stock is obtained；5th, hot rolling, Nb Si Ti Mo B sheet alloys are obtained.Nb Si Ti Mo B sheet alloys of the present invention have high room temperature and elevated temperature strength, excellent high temperature plasticity and preferable temperature-room type plasticity.
Description
Technical field
The invention belongs to alloy material preparing technical field, and in particular to a kind of Nb-Si-Ti-Mo-B sheet alloys and its
Preparation method.
Background technology
Following Aero-Space engine service temperature further improves, and Service Environment is harsher, and refractory metal is solid
Fused gold can not meet the needs of high performance advanced engine of future generation, thereby promote the fast of refractory metal based composites
Hail exhibition.Meanwhile development and updated as science and technology is maked rapid progress, social development is rapid and the living standard of people
Increasingly improving so that people are continuously increased to the demand of refractory alloy and its composite, while also to refractory metal alloy
And its performance of composite proposes higher requirement.In all refractory metals, niobium (Nb) is most likely at aviation hair
It is applied in motivation.Niobium has good ductility and shapes performance at room temperature, but in the case of single-phase, significantly carries
The limited promise that its high mechanical property is applied with reaching on high thrust-weight ratio engine, and the antioxygenic property extreme difference of niobium, resistance
Its application in high temperature oxidative atmosphere is hindered.Nb-Si systems alloy by in-situ authigenic Nb5Si3Intermetallic compound phase and niobium are consolidated
Solution (Nbss) mutually compound composition, the material have the characteristics that high-melting-point, low-density and high intensity, can improve it by alloying
High-temperature oxidation resistance.Therefore, the most possible candidate material as advanced jet engine of future generation of Nb-Si systems alloy.
However, a popular feature of these Nb-Si systems alloys is highly brittle at room temperature, this is due to Nb-Si systems alloy
Microstructure is by thick dendroid Nb5Si3Intermetallic compound and niobium solid solution (Nbss) composition.This tissue makes Nb-Si systems
Alloy At Room Temperature fracture toughness is very low, even if also not having plasticity at high temperature, it is difficult to shapes；Also reduce alloy material simultaneously
Testing Tensile Strength at Elevated Temperature.Therefore, it is necessary to by multicomponent alloying and technology controlling and process, obtaining has that fine and close, uniform particle is thin
The shortcomings of small alloy microscopic structure is to overcome Nb-Si systems Alloy At Room Temperature fragility and be difficult to, make the Alloy At Room Temperature modeling of Nb-Si systems
Toughness, elevated temperature strength and antioxygenic property reach well balanced.
The content of the invention
The technical problems to be solved by the invention are to be directed to above-mentioned the deficiencies in the prior art, there is provided a kind of Nb-Si-Ti-
Mo-B sheet alloys, the room temperature tensile intensity of the Nb-Si-Ti-Mo-B sheet alloys is 617MPa~709MPa, elongation percentage is
3.1%~5.2%, 1450 DEG C of tensile strength is 185MPa~306MPa, and stretch percentage elongation is 89%~216%, the Nb-
Si-Ti-Mo-B sheet alloys have high room temperature and elevated temperature strength, excellent high temperature plasticity and preferable temperature-room type plasticity, can
As superhigh temperature structural material of future generation.
In order to solve the above technical problems, the technical solution adopted by the present invention is：A kind of Nb-Si-Ti-Mo-B sheet alloys,
Characterized in that, it is made up of the composition of following atomic percent：Si 8%~18%, Ti7%~13%, Mo 4%~12%, B
0.5%~2.5%, surplus is Nb and inevitable impurity.
Above-mentioned a kind of Nb-Si-Ti-Mo-B sheet alloys, it is characterised in that by following atomic percent into packet
Into：Si 10%~16%, Ti 8%~12%, Mo 6%~10%, B 1%~2%, surplus be Nb and inevitably it is miscellaneous
Matter.
Above-mentioned a kind of Nb-Si-Ti-Mo-B sheet alloys, it is characterised in that by following atomic percent into packet
Into：Si 13%, Ti 10%, Mo 8%, B 1.5%, surplus are Nb and inevitable impurity.
In addition, present invention also offers a kind of method for preparing above-mentioned Nb-Si-Ti-Mo-B sheet alloys, its feature exists
In this method comprises the following steps：
It is well mixed Step 1: Si powder, Ti powder, Mo powder, B powder and the Nb spheres of powder are ground, mixed-powder is obtained after vacuum drying；
Step 2: mixed-powder described in step 1 is compressing, blank is obtained, the blank is then placed in vacuum
In sintering furnace, it is not more than 3 × 10 in vacuum-1Pa, insulation 1h~2h is burnt under conditions of temperature is 1400 DEG C~1500 DEG C
Knot processing, sintered body is obtained after furnace cooling；
Step 3: sintered body described in step 2 is placed in vacuum consumable electrode arc furnace, it is not more than 5 × 10 in vacuum- 2Vacuum consumable arc-melting 2~4 times under conditions of Pa, carry out the processing that strips off the skin, obtain ingot casting after natural cooling；The vacuum is certainly
The electric current for consuming electric arc melting is 7kA~9kA, and the voltage of the vacuum consumable arc-melting is 35V~45V；
Step 4: by ingot casting described in step 3 temperature be 1100 DEG C~1300 DEG C, extrusion ratio be 6~8 under conditions of
Extruded, the processing that strips off the skin is carried out after natural cooling, obtains bar stock；
Step 5: by bar stock described in step 4 rolling temperature be 1000 DEG C~1200 DEG C, thickness deformation amount be 80%
Under conditions of rolled, after natural cooling remove surface oxide skin, obtain Nb-Si-Ti-Mo-B sheet alloys.
Above-mentioned method, it is characterised in that Si powder described in step 1, Ti powder, Mo powder, the quality purity of B powder and Nb powder
It is not less than 99%.
Above-mentioned method, it is characterised in that the particle diameter of Si powder described in step 1 and B powder is no more than 10 μm, the Ti
For the particle diameter of powder and Nb powder no more than 20 μm, the particle diameter of the Mo powder is not more than 15 μm.
Above-mentioned method, it is characterised in that ball milling described in step 1 is wet ball grinding, during the wet ball grinding
Absolute ethyl alcohol is used as dispersant, the volume of the absolute ethyl alcohol is the 3 of Nb powder, Si powder, Ti powder, Mo powder and B powder quality sums
~5 times, the wherein unit of volume is mL, and the unit of quality is g.
Above-mentioned method, it is characterised in that the speed of wet ball grinding described in step 1 is 100rpm~300rpm, ball material
Mass ratio is (4~8): 1, Ball-milling Time is 10h~20h.
Above-mentioned method, it is characterised in that extrusion temperature described in step 4 is 1150 DEG C~1250 DEG C, and extrusion ratio is
6.5~7.5.
Above-mentioned method, it is characterised in that rolling temperature described in step 5 is 1050 DEG C~1150 DEG C.
The present invention has advantages below compared with prior art：
1st, the present invention prepares Nb- using multicomponent alloying+vacuum consumable arc-melting+hot extrusion+hot rolled process
Si-Ti-Mo-B sheet alloys, the room temperature tensile intensity of prepared Nb-Si-Ti-Mo-B sheet alloys for 617MPa~
709MPa, elongation percentage are 3.1%~5.2%, and 1450 DEG C of tensile strength is 185MPa~306MPa, stretch percentage elongation 89%
~216%, the Nb-Si-Ti-Mo-B sheet alloys have high room temperature and elevated temperature strength, excellent high temperature plasticity and preferably
Temperature-room type plasticity, superhigh temperature structural material of future generation can be used as.
2nd, the present invention adds Ti elements in Nb-Si systems alloy material, improves the ductility and toughness at room temperature of material, and reduce
Density；Addition B and Mo elements significantly improve Nb-Si-Ti-Mo-B sheet alloy mechanical properties.
3rd, the present invention prepares Nb-Si-Ti-Mo-B sheet alloys using hot extrusion+hot rolled process, on the one hand eliminates
The microdefect such as caused cavity during vacuum consumable arc-melting, while avoid and produce fine fisssure in the hot rolling
Line；On the other hand, Nbss becomes threadiness in the presence of stress, and the fibrous Nbss tissues of this interconnection make Nb-
Si-Ti-Mo-B sheet alloys have preferable plasticity and toughness at room temperature；Crush and refine using hot extrusion+hot rolling technology simultaneously
Dendritic structure, and microstructure is reset under stress, make tiny Nb5Si3Intermetallic compound phase is uniform
Be distributed in threadiness Nbss matrixes in, it is this tissue make Nb-Si-Ti-Mo-B sheet alloys have excellent mechanical property and
Preferable temperature-room type plasticity.
4th, Nb-Si-Ti-Mo-B sheet alloys of the present invention have superplasticity under certain condition, can be straight by superplastic forming
Connect the precise thin-wall complex parts produced close to dead size.
The present invention is described in further detail with reference to the accompanying drawings and examples.
Brief description of the drawings
Fig. 1 is the micro-organization chart of Nb-Si-Ti-Mo-B sheet alloys prepared by the embodiment of the present invention 1.
Embodiment
Embodiment 1
The present embodiment Nb-Si-Ti-Mo-B sheet alloys are made up of the composition of following atomic percent：Si13%, Ti
10%, Mo 8%, B 1.5%, surplus are Nb and inevitable impurity.
The preparation method of the present embodiment Nb-Si-Ti-Mo-B sheet alloys comprises the following steps：
Step 1: Si powder, Ti powder, Mo powder, B powder and Nb powder are placed in ball mill, using absolute ethyl alcohol as dispersant, turning
Speed is 200rpm, and ball material mass ratio is 6:Wet ball grinding 15h under conditions of 1, dry after ball milling, mixed under vacuum
Powder；The volume of the absolute ethyl alcohol is 4 times of Si powder, Ti powder, Mo powder, B powder and Nb powder quality sums, the wherein unit of volume
For mL, the unit of quality is g, and the Si powder, Ti powder, Mo powder, the quality purity of B powder and Nb powder are not less than 99%, the Si
The particle diameter of powder is not more than 10 μm, and the particle diameter of the Ti powder is not more than 20 μm, and the particle diameter of the Mo powder is not more than 15 μm, the B powder
Particle diameter be not more than 10 μm, the particle diameter of the Nb powder is not more than 20 μm；
Step 2: a kind of mixed-powder of step is compressing, blank is obtained, the blank is then placed in vacuum
In sintering furnace, it is not more than 3 × 10 in vacuum-1Pa, insulation 1.5h is sintered under conditions of temperature is 1450 DEG C, with stove
Sintered body is obtained after cooling；
Step 3: sintered body described in step 2 is placed in vacuum consumable electrode arc furnace, it is not more than 5 × 10 in vacuum- 2Vacuum consumable arc-melting 3 times under conditions of Pa, carry out the processing that strips off the skin, obtain ingot casting after natural cooling；The vacuum consumable electricity
The electric current of arc melting is 8kA, and the voltage of the vacuum consumable arc-melting is 40V；
Step 4: by ingot casting described in step 3 temperature be 1200 DEG C, extrusion ratio be 7 under conditions of extruded, from
The processing that strips off the skin so is carried out after cooling, obtains bar stock；
Step 5: by bar stock described in step 4 rolling temperature be 1100 DEG C, thickness deformation amount be 80% under conditions of
Rolled, the oxide skin on surface is removed after natural cooling, obtains Nb-Si-Ti-Mo-B sheet alloys.
The microscopic structure of Nb-Si-Ti-Mo-B sheet alloys manufactured in the present embodiment is as shown in Figure 1.Can from Fig. 1
Go out, the microscopic structure of Nb-Si-Ti-Mo-B sheet alloys manufactured in the present embodiment is by Nb5Si3Intermetallic compound phase and niobium solid solution
Body (Nbss) phase composition, not the defects of empty and micro-crack, dendritic structure is broken and refined completely, tiny Nb5Si3
Intermetallic compound phase is evenly distributed in the Nbss of threadiness.The fibrous Nbss matrixes of interconnection make Nb-Si-Ti-Mo-
B sheet alloys have preferable plasticity, tiny equally distributed Nb at room temperature5Si3Intermetallic compound hardening constituent makes Nb-
Si-Ti-Mo-B sheet alloys have excellent room temperature and mechanical behavior under high temperature.The Nbss phases softened at high temperature coordinate crystal boundary cunning
Move, release Grain Boundary Sliding in stress concentration caused by triangle grain boundaries, early fracture is avoided, so as to result in Nb-Si-
The great plasticity of Ti-Mo-B sheet alloys or superplasticity.Nb-Si systems alloy is due to the effect of intermetallic compound, it is difficult to processes
Shaping, because superplasticity can obtain big uniform extension under low stress, so superplastic forming be solve this problem it is effective
Method.
Further test in Nb-Si-Ti-Mo-B sheet alloys manufactured in the present embodiment niobium solid solution phase (Nbss) and
Nb5Si3The chemical composition of intermetallic compound phase, the results are shown in Table 1.
The chemical composition of Nb-Si-Ti-Mo-B sheet alloys prepared by the embodiment 1 of table 1
As shown in table 1, Mo elements are mainly solid-solubilized in Nb forms solid solution with Nb, produces strong solution strengthening, greatly
Improve Nbss elevated temperature strength；B element is mainly solid-solubilized in Nb forms solid solution with Nb, produces strong solution strengthening, carries
High Nbss room temperature strength.Therefore, by Mo and B element alloying, Nb-Si-Ti-Mo-B sheet alloys are not only increased
Room temperature strength, and improve the elevated temperature strength of Nb-Si-Ti-Mo-B sheet alloys.Ti elements are also mainly solid-solubilized in Nb, with Nb
Solid solution is formed, the density of material is reduced and improves the ductility and toughness at room temperature of Nb-Si-Ti-Mo-B sheet alloys.
The room temperature tensile intensity of Nb-Si-Ti-Mo-B sheet alloys manufactured in the present embodiment is 709MPa, elongation percentage is
5.2%, 1450 DEG C of tensile strength is 306MPa, stretch percentage elongation 216%, and the Nb-Si-Ti-Mo-B sheet alloys have
High room temperature and elevated temperature strength, excellent high temperature plasticity and preferable temperature-room type plasticity, superhigh temperature structural wood of future generation can be used as
Material.
Embodiment 2
The present embodiment Nb-Si-Ti-Mo-B sheet alloys are made up of the composition of following atomic percent：Si10%, Ti
8%, Mo 6%, B 1%, surplus are Nb and inevitable impurity.
The preparation method of the present embodiment Nb-Si-Ti-Mo-B sheet alloys comprises the following steps：
Step 1: Si powder, Ti powder, Mo powder, B powder and Nb powder are placed in ball mill, using absolute ethyl alcohol as dispersant, turning
Speed is 100rpm, and ball material mass ratio is 4:Wet ball grinding 10h under conditions of 1, dry after ball milling, mixed under vacuum
Powder；The volume of the absolute ethyl alcohol is 3 times of Si powder, Ti powder, Mo powder, B powder and Nb powder quality sums, the wherein unit of volume
For mL, the unit of quality is g, and the Si powder, Ti powder, Mo powder, the quality purity of B powder and Nb powder are not less than 99%, the Si
The particle diameter of powder is not more than 10 μm, and the particle diameter of the Ti powder is not more than 20 μm, and the particle diameter of the Mo powder is not more than 15 μm, the Nb powder
Particle diameter be not more than 20 μm；
Step 2: a kind of mixed-powder of step is compressing, blank is obtained, the blank is then placed in vacuum
In sintering furnace, it is not more than 3 × 10 in vacuum-1Pa, insulation 1h is sintered under conditions of temperature is 1400 DEG C, cold with stove
But sintered body is obtained afterwards；
Step 3: sintered body described in step 2 is placed in vacuum consumable electrode arc furnace, it is not more than 5 × 10 in vacuum- 2Vacuum consumable arc-melting 2 times under conditions of Pa, carry out the processing that strips off the skin, obtain ingot casting after natural cooling；The vacuum consumable electricity
The electric current of arc melting is 7kA, and the voltage of the vacuum consumable arc-melting is 35V；
Step 4: by ingot casting described in step 3 temperature be 1100 DEG C, extrusion ratio be 6 under conditions of extruded, from
The processing that strips off the skin so is carried out after cooling, obtains bar stock；
Step 5: by bar stock described in step 4 rolling temperature be 1000 DEG C, thickness deformation amount be 80% under conditions of
Rolled, the oxide skin on surface is removed after natural cooling, obtains Nb-Si-Ti-Mo-B sheet alloys.
The room temperature tensile intensity of Nb-Si-Ti-Mo-B sheet alloys manufactured in the present embodiment is 617MPa, elongation percentage is
3.1%, 1450 DEG C of tensile strength is 185MPa, and stretch percentage elongation 89%, the Nb-Si-Ti-Mo-B sheet alloys have high
Room temperature and elevated temperature strength, excellent high temperature plasticity and preferable temperature-room type plasticity, superhigh temperature structural material of future generation can be used as.
Embodiment 3
The present embodiment Nb-Si-Ti-Mo-B sheet alloys are made up of the composition of following atomic percent：Si16%, Ti
12%, Mo 10%, B 2%, surplus are Nb and inevitable impurity.
The preparation method of the present embodiment Nb-Si-Ti-Mo-B sheet alloys comprises the following steps：
Step 1: Si powder, Ti powder, Mo powder, B powder and Nb powder are placed in ball mill, using absolute ethyl alcohol as dispersant, turning
Speed is 100rpm, and ball material mass ratio is 8:Wet ball grinding 20h under conditions of 1, dry after ball milling, mixed under vacuum
Powder；The volume of the absolute ethyl alcohol is 5 times of Si powder, Ti powder, Mo powder, B powder and Nb powder quality sums, the wherein unit of volume
For mL, the unit of quality is g, and the Si powder, Ti powder, Mo powder, the quality purity of B powder and Nb powder are not less than 99%, the Si
The particle diameter of powder is not more than 10 μm, and the particle diameter of the Ti powder is not more than 20 μm, and the particle diameter of the Mo powder is not more than 15 μm, the Nb powder
Particle diameter be not more than 20 μm；
Step 2: a kind of mixed-powder of step is compressing, blank is obtained, the blank is then placed in vacuum
In sintering furnace, it is not more than 3 × 10 in vacuum-1Pa, insulation 1h is sintered under conditions of temperature is 1500 DEG C, cold with stove
But sintered body is obtained afterwards；
Step 3: sintered body described in step 2 is placed in vacuum consumable electrode arc furnace, it is not more than 5 × 10 in vacuum- 2Vacuum consumable arc-melting 4 times under conditions of Pa, carry out the processing that strips off the skin, obtain ingot casting after natural cooling；The vacuum consumable electricity
The electric current of arc melting is 9kA, and the voltage of the vacuum consumable arc-melting is 45V；
Step 4: by ingot casting described in step 3 temperature be 1300 DEG C, extrusion ratio be 8 under conditions of extruded, from
The processing that strips off the skin so is carried out after cooling, obtains bar stock；
Step 5: by bar stock described in step 4 rolling temperature be 1200 DEG C, thickness deformation amount be 80% under conditions of
Rolled, the oxide skin on surface is removed after natural cooling, obtains Nb-Si-Ti-Mo-B sheet alloys.
The room temperature tensile intensity of Nb-Si-Ti-Mo-B sheet alloys manufactured in the present embodiment is 635MPa, elongation percentage is
4.3%, 1450 DEG C of tensile strength 215MPa, stretch percentage elongation 173%, the Nb-Si-Ti-Mo-B sheet alloys have height
Room temperature and elevated temperature strength, excellent high temperature plasticity and preferable temperature-room type plasticity, superhigh temperature structural material of future generation can be used as.
Embodiment 4
The present embodiment Nb-Si-Ti-Mo-B sheet alloys are made up of the composition of following atomic percent：Si8%, Ti 7%,
Mo 4%, B 0.5%, surplus are Nb and inevitable impurity.
The preparation method of the present embodiment Nb-Si-Ti-Mo-B sheet alloys comprises the following steps：
Step 1: Si powder, Ti powder, Mo powder, B powder and Nb powder are placed in ball mill, using absolute ethyl alcohol as dispersant, turning
Speed is 200rpm, and ball material mass ratio is 6:Wet ball grinding 20h under conditions of 1, dry after ball milling, mixed under vacuum
Powder；The volume of the absolute ethyl alcohol is 5 times of Si powder, Ti powder, Mo powder, B powder and Nb powder quality sums, the wherein unit of volume
For mL, the unit of quality is g, and the Si powder, Ti powder, Mo powder, the quality purity of B powder and Nb powder are not less than 99%, the Si
The particle diameter of powder is not more than 10 μm, and the particle diameter of the Ti powder is not more than 20 μm, and the particle diameter of the Mo powder is not more than 15 μm, the B powder
Particle diameter be not more than 10 μm, the particle diameter of the Nb powder is not more than 20 μm；
Step 2: a kind of mixed-powder of step is compressing, blank is obtained, the blank is then placed in vacuum
In sintering furnace, it is not more than 3 × 10 in vacuum-1Pa, insulation 1h is sintered under conditions of temperature is 1500 DEG C, cold with stove
But sintered body is obtained afterwards；
Step 3: sintered body described in step 2 is placed in vacuum consumable electrode arc furnace, it is not more than 5 × 10 in vacuum- 2Vacuum consumable arc-melting 3 times under conditions of Pa, carry out the processing that strips off the skin, obtain ingot casting after natural cooling；The vacuum consumable electricity
The electric current of arc melting is 9kA, and the voltage of the vacuum consumable arc-melting is 45V；
Step 4: by ingot casting described in step 3 temperature be 1150 DEG C, extrusion ratio be 6.5 under conditions of extruded,
The processing that strips off the skin is carried out after natural cooling, obtains bar stock；
Step 5: by bar stock described in step 4 rolling temperature be 1050 DEG C, thickness deformation amount be 80% under conditions of
Rolled, the oxide skin on surface is removed after natural cooling, obtains Nb-Si-Ti-Mo-B sheet alloys.
The room temperature tensile intensity of Nb-Si-Ti-Mo-B sheet alloys manufactured in the present embodiment is 697MPa, elongation percentage is
3.5%, 1450 DEG C of tensile strength is 235MPa, stretch percentage elongation 216%, and the Nb-Si-Ti-Mo-B sheet alloys have
High room temperature and elevated temperature strength, excellent high temperature plasticity and preferable temperature-room type plasticity, superhigh temperature structural wood of future generation can be used as
Material.
Embodiment 5
The present embodiment Nb-Si-Ti-Mo-B sheet alloys are made up of the composition of following atomic percent：Si18%, Ti
13%, Mo 12%, B 2.5%, surplus are Nb and inevitable impurity.
The preparation method of the present embodiment Nb-Si-Ti-Mo-B sheet alloys comprises the following steps：
Step 1: Si powder, Ti powder, Mo powder, B powder and Nb powder are placed in ball mill, using absolute ethyl alcohol as dispersant, turning
Speed is 300rpm, and ball material mass ratio is 8:Wet ball grinding 20h under conditions of 1, dry after ball milling, mixed under vacuum
Powder；The volume of the absolute ethyl alcohol is 4 times of Si powder, Ti powder, Mo powder, B powder and Nb powder quality sums, the wherein unit of volume
For mL, the unit of quality is g, and the Si powder, Ti powder, Mo powder, the quality purity of B powder and Nb powder are not less than 99%, the Si
The particle diameter of powder is not more than 10 μm, and the particle diameter of the Ti powder is not more than 20 μm, and the particle diameter of the Mo powder is not more than 15 μm, the B powder
Particle diameter be not more than 10 μm, the particle diameter of the Nb powder is not more than 20 μm；
Step 2: a kind of mixed-powder of step is compressing, blank is obtained, the blank is then placed in vacuum
In sintering furnace, it is not more than 3 × 10 in vacuum-1Pa, insulation 1h is sintered under conditions of temperature is 1400 DEG C, cold with stove
But sintered body is obtained afterwards；
Step 3: sintered body described in step 2 is placed in vacuum consumable electrode arc furnace, it is not more than 5 × 10 in vacuum- 2Vacuum consumable arc-melting 3 times under conditions of Pa, carry out the processing that strips off the skin, obtain ingot casting after natural cooling；The vacuum consumable electricity
The electric current of arc melting is 8kA, and the voltage of the vacuum consumable arc-melting is 40V；
Step 4: by ingot casting described in step 3 temperature be 1250 DEG C, extrusion ratio be 7.5 under conditions of extruded,
The processing that strips off the skin is carried out after natural cooling, obtains bar stock；
Step 5: by bar stock described in step 4 rolling temperature be 1150 DEG C, thickness deformation amount be 80% under conditions of
Rolled, the oxide skin on surface is removed after natural cooling, obtains Nb-Si-Ti-Mo-B sheet alloys.
The room temperature tensile intensity of Nb-Si-Ti-Mo-B sheet alloys manufactured in the present embodiment is 632MPa, elongation percentage is
3.7%, 1450 DEG C of tensile strength is 215MPa, stretch percentage elongation 193%, and the Nb-Si-Ti-Mo-B sheet alloys have
High room temperature and elevated temperature strength, excellent high temperature plasticity and preferable temperature-room type plasticity, superhigh temperature structural wood of future generation can be used as
Material.
Embodiment 6
The present embodiment Nb-Si-Ti-Mo-B sheet alloys are made up of the composition of following atomic percent：Si8%, Ti 7%,
Mo 12%, B 2.5%, surplus are Nb and inevitable impurity.
The preparation method of the present embodiment Nb-Si-Ti-Mo-B sheet alloys comprises the following steps：
Step 1: Si powder, Ti powder, Mo powder, B powder and Nb powder are placed in ball mill, using absolute ethyl alcohol as dispersant, turning
Speed is 300rpm, and ball material mass ratio is 6:Wet ball grinding 15h under conditions of 1, dry after ball milling, mixed under vacuum
Powder；The volume of the absolute ethyl alcohol is 5 times of Si powder, Ti powder, Mo powder, B powder and Nb powder quality sums, the wherein unit of volume
For mL, the unit of quality is g, and the Si powder, Ti powder, Mo powder, the quality purity of B powder and Nb powder are not less than 99%, the Si
The particle diameter of powder is not more than 10 μm, and the particle diameter of the Ti powder is not more than 20 μm, and the particle diameter of the Mo powder is not more than 15 μm, the B powder
Particle diameter be not more than 10 μm, the particle diameter of the Nb powder is not more than 20 μm；
Step 2: a kind of mixed-powder of step is compressing, blank is obtained, the blank is then placed in vacuum
In sintering furnace, it is not more than 3 × 10 in vacuum-1Pa, insulation 2h is sintered under conditions of temperature is 1450 DEG C, cold with stove
But sintered body is obtained afterwards；
Step 3: sintered body described in step 2 is placed in vacuum consumable electrode arc furnace, it is not more than 5 × 10 in vacuum- 2Vacuum consumable arc-melting 3 times under conditions of Pa, carry out the processing that strips off the skin, obtain ingot casting after natural cooling；The vacuum consumable electricity
The electric current of arc melting is 7kA, and the voltage of the vacuum consumable arc-melting is 35V；
Step 4: by ingot casting described in step 3 temperature be 1200 DEG C, extrusion ratio be 7 under conditions of extruded, from
The processing that strips off the skin so is carried out after cooling, obtains bar stock；
Step 5: by bar stock described in step 4 rolling temperature be 1100 DEG C, thickness deformation amount be 80% under conditions of
Rolled, the oxide skin on surface is removed after natural cooling, obtains Nb-Si-Ti-Mo-B sheet alloys.
The room temperature tensile intensity of Nb-Si-Ti-Mo-B sheet alloys manufactured in the present embodiment is 676MPa, elongation percentage is
4.9%, 1450 DEG C of tensile strength is 259MPa, stretch percentage elongation 206%, and the Nb-Si-Ti-Mo-B sheet alloys have
High room temperature and elevated temperature strength, excellent high temperature plasticity and preferable temperature-room type plasticity, superhigh temperature structural wood of future generation can be used as
Material.
Embodiment 7
The present embodiment Nb-Si-Ti-Mo-B sheet alloys are made up of the composition of following atomic percent：Si18%, Ti
13%, Mo 4%, B 0.5%, surplus are Nb and inevitable impurity.
The preparation method of the present embodiment Nb-Si-Ti-Mo-B sheet alloys comprises the following steps：
Step 1: Si powder, Ti powder, Mo powder, B powder and Nb powder are placed in ball mill, using absolute ethyl alcohol as dispersant, turning
Speed is 200rpm, and ball material mass ratio is 6:Wet ball grinding 20h under conditions of 1, dry after ball milling, mixed under vacuum
Powder；The volume of the absolute ethyl alcohol is 3 times of Si powder, Ti powder, Mo powder, B powder and Nb powder quality sums, the wherein unit of volume
For mL, the unit of quality is g, and the Si powder, Ti powder, Mo powder, the quality purity of B powder and Nb powder are not less than 99%, the Si
The particle diameter of powder is not more than 10 μm, and the particle diameter of the Ti powder is not more than 20 μm, and the particle diameter of the Mo powder is not more than 15 μm, the B powder
Particle diameter be not more than 10 μm, the particle diameter of the Nb powder is not more than 20 μm；
Step 2: a kind of mixed-powder of step is compressing, blank is obtained, the blank is then placed in vacuum
In sintering furnace, it is not more than 3 × 10 in vacuum-1Pa, insulation 1.8h is sintered under conditions of temperature is 1480 DEG C, with stove
Sintered body is obtained after cooling；
Step 3: sintered body described in step 2 is placed in vacuum consumable electrode arc furnace, it is not more than 5 × 10 in vacuum- 2Vacuum consumable arc-melting 3 times under conditions of Pa, carry out the processing that strips off the skin, obtain ingot casting after natural cooling；The vacuum consumable electricity
The electric current of arc melting is 8.2kA, and the voltage of the vacuum consumable arc-melting is 41V；
Step 4: by ingot casting described in step 3 temperature be 1200 DEG C, extrusion ratio be 8 under conditions of extruded, from
The processing that strips off the skin so is carried out after cooling, obtains bar stock；
Step 5: by bar stock described in step 4 rolling temperature be 1100 DEG C, thickness deformation amount be 80% under conditions of
Rolled, the oxide skin on surface is removed after natural cooling, obtains Nb-Si-Ti-Mo-B sheet alloys.
The room temperature tensile intensity of Nb-Si-Ti-Mo-B sheet alloys manufactured in the present embodiment is 703MPa, elongation percentage is
5.1%, 1450 DEG C of tensile strength is 295MPa, stretch percentage elongation 210%, and the Nb-Si-Ti-Mo-B sheet alloys have
High room temperature and elevated temperature strength, excellent high temperature plasticity and preferable temperature-room type plasticity, superhigh temperature structural wood of future generation can be used as
Material.
It is described above, only it is presently preferred embodiments of the present invention, not the present invention is imposed any restrictions.It is every according to invention skill
Any simple modification, change and equivalence change that art is substantially made to above example, still fall within technical solution of the present invention
Protection domain in.
Claims (10)
1. a kind of Nb-Si-Ti-Mo-B sheet alloys, it is characterised in that be made up of the composition of following atomic percent：Si 8%
~18%, Ti 7%~13%, Mo 4%~12%, B 0.5%~2.5%, surplus are Nb and inevitable impurity；Prepare
The method of the Nb-Si-Ti-Mo-B sheet alloys comprises the following steps：
It is well mixed Step 1: Si powder, Ti powder, Mo powder, B powder and the Nb spheres of powder are ground, mixed-powder is obtained after vacuum drying；
Step 2: mixed-powder described in step 1 is compressing, blank is obtained, the blank is then placed in vacuum-sintering
In stove, it is not more than 3 × 10 in vacuum-1Pa, insulation 1h~2h is sintered place under conditions of temperature is 1400 DEG C~1500 DEG C
Reason, sintered body is obtained after furnace cooling；
Step 3: sintered body described in step 2 is placed in vacuum consumable electrode arc furnace, it is not more than 5 × 10 in vacuum-2Pa's
Under the conditions of vacuum consumable arc-melting 2~4 times, the processing that strips off the skin is carried out after natural cooling, obtains ingot casting；The vacuum consumable electric arc
The electric current of melting is 7kA~9kA, and the voltage of the vacuum consumable arc-melting is 35V~45V；
Step 4: by ingot casting described in step 3 temperature be 1100 DEG C~1300 DEG C, extrusion ratio be 6~8 under conditions of carry out
Extrude, carry out the processing that strips off the skin after natural cooling, obtain bar stock；
Step 5: by bar stock described in step 4 rolling temperature be 1000 DEG C~1200 DEG C, thickness deformation amount be 80% bar
Rolled under part, the oxide skin on surface is removed after natural cooling, obtains Nb-Si-Ti-Mo-B sheet alloys.
2. a kind of Nb-Si-Ti-Mo-B sheet alloys according to claim 1, it is characterised in that by following atomic percent
The composition composition of ratio：Si 10%~16%, Ti 8%~12%, Mo 6%~10%, B 1%~2%, surplus is for Nb and not
Evitable impurity.
3. a kind of Nb-Si-Ti-Mo-B sheet alloys according to claim 2, it is characterised in that by following atomic percent
The composition composition of ratio：Si 13%, Ti 10%, Mo 8%, B 1.5%, surplus are Nb and inevitable impurity.
A kind of 4. method for preparing the Nb-Si-Ti-Mo-B sheet alloys as described in claim 1,2 or 3, it is characterised in that the party
Method comprises the following steps：
It is well mixed Step 1: Si powder, Ti powder, Mo powder, B powder and the Nb spheres of powder are ground, mixed-powder is obtained after vacuum drying；
Step 2: mixed-powder described in step 1 is compressing, blank is obtained, the blank is then placed in vacuum-sintering
In stove, it is not more than 3 × 10 in vacuum-1Pa, insulation 1h~2h is sintered place under conditions of temperature is 1400 DEG C~1500 DEG C
Reason, sintered body is obtained after furnace cooling；
Step 3: sintered body described in step 2 is placed in vacuum consumable electrode arc furnace, it is not more than 5 × 10 in vacuum-2Pa's
Under the conditions of vacuum consumable arc-melting 2~4 times, the processing that strips off the skin is carried out after natural cooling, obtains ingot casting；The vacuum consumable electric arc
The electric current of melting is 7kA~9kA, and the voltage of the vacuum consumable arc-melting is 35V~45V；
Step 4: by ingot casting described in step 3 temperature be 1100 DEG C~1300 DEG C, extrusion ratio be 6~8 under conditions of carry out
Extrude, carry out the processing that strips off the skin after natural cooling, obtain bar stock；
Step 5: by bar stock described in step 4 rolling temperature be 1000 DEG C~1200 DEG C, thickness deformation amount be 80% bar
Rolled under part, the oxide skin on surface is removed after natural cooling, obtains Nb-Si-Ti-Mo-B sheet alloys.
5. according to the method for claim 4, it is characterised in that Si powder described in step 1, Ti powder, Mo powder, B powder and Nb powder
Quality purity be not less than 99%.
6. according to the method for claim 4, it is characterised in that the particle diameter of Si powder described in step 1 and B powder no more than
10 μm, for the particle diameter of the Ti powder and Nb powder no more than 20 μm, the particle diameter of the Mo powder is not more than 15 μm.
7. according to the method for claim 4, it is characterised in that ball milling described in step 1 is wet ball grinding, the wet method
Absolute ethyl alcohol is used during ball milling as dispersant, the volume of the absolute ethyl alcohol is Nb powder, Si powder, Ti powder, Mo powder and B powder
3~5 times of quality sum, the wherein unit of volume are mL, and the unit of quality is g.
8. according to the method for claim 7, it is characterised in that the speed of wet ball grinding described in step 1 be 100rpm~
300rpm, ball material mass ratio are (4~8): 1, Ball-milling Time is 10h~20h.
9. according to the method for claim 4, it is characterised in that extrusion temperature described in step 4 is 1150 DEG C~1250
DEG C, extrusion ratio is 6.5~7.5.
10. according to the method for claim 4, it is characterised in that rolling temperature described in step 5 is 1050 DEG C~1150
℃。
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