CN108866413A - A kind of tough molybdenum alloy of composite high-strength and preparation method - Google Patents
A kind of tough molybdenum alloy of composite high-strength and preparation method Download PDFInfo
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- 229910001182 Mo alloy Inorganic materials 0.000 title claims abstract description 71
- 239000002131 composite material Substances 0.000 title claims abstract description 53
- 238000002360 preparation method Methods 0.000 title claims abstract description 24
- 239000000843 powder Substances 0.000 claims abstract description 37
- 150000004678 hydrides Chemical class 0.000 claims abstract description 32
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims abstract description 26
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 21
- 230000009467 reduction Effects 0.000 claims abstract description 17
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 14
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 13
- 239000000428 dust Substances 0.000 claims abstract description 13
- 239000002994 raw material Substances 0.000 claims abstract description 12
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims abstract description 11
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000004411 aluminium Substances 0.000 claims abstract description 11
- 239000000203 mixture Substances 0.000 claims abstract description 6
- 239000011812 mixed powder Substances 0.000 claims abstract description 3
- 238000000498 ball milling Methods 0.000 claims description 12
- 238000005245 sintering Methods 0.000 claims description 12
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 10
- 238000002156 mixing Methods 0.000 claims description 9
- 238000005096 rolling process Methods 0.000 claims description 7
- 239000007789 gas Substances 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 6
- 229910052786 argon Inorganic materials 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 5
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 4
- 239000001257 hydrogen Substances 0.000 claims description 4
- 229910052739 hydrogen Inorganic materials 0.000 claims description 4
- 239000004615 ingredient Substances 0.000 claims description 4
- 238000005056 compaction Methods 0.000 claims description 3
- 238000003825 pressing Methods 0.000 claims description 3
- 229910052796 boron Inorganic materials 0.000 abstract description 10
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 7
- 239000001301 oxygen Substances 0.000 abstract description 7
- 229910052760 oxygen Inorganic materials 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 5
- 239000011159 matrix material Substances 0.000 abstract description 5
- 238000005728 strengthening Methods 0.000 abstract description 5
- 238000005204 segregation Methods 0.000 abstract description 3
- 239000003638 chemical reducing agent Substances 0.000 abstract description 2
- 238000002050 diffraction method Methods 0.000 abstract description 2
- 229910052710 silicon Inorganic materials 0.000 abstract description 2
- 239000010703 silicon Substances 0.000 abstract description 2
- 230000002195 synergetic effect Effects 0.000 abstract 1
- 230000000052 comparative effect Effects 0.000 description 14
- 229910000568 zirconium hydride Inorganic materials 0.000 description 10
- 229910052750 molybdenum Inorganic materials 0.000 description 8
- 239000011733 molybdenum Substances 0.000 description 8
- 229910000048 titanium hydride Inorganic materials 0.000 description 7
- 239000000956 alloy Substances 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 229910045601 alloy Inorganic materials 0.000 description 4
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 4
- 239000010931 gold Substances 0.000 description 4
- 229910052737 gold Inorganic materials 0.000 description 4
- 239000000470 constituent Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 239000000758 substrate Substances 0.000 description 3
- 229910052726 zirconium Inorganic materials 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 229960004424 carbon dioxide Drugs 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000010348 incorporation Methods 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 229910001404 rare earth metal oxide Inorganic materials 0.000 description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 235000003283 Pachira macrocarpa Nutrition 0.000 description 1
- 241001083492 Trapa Species 0.000 description 1
- 235000014364 Trapa natans Nutrition 0.000 description 1
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002090 carbon oxide Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000003760 hair shine Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000320 mechanical mixture Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000003758 nuclear fuel Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000004663 powder metallurgy Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000001953 recrystallisation Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 235000009165 saligot Nutrition 0.000 description 1
- 229910052594 sapphire Inorganic materials 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000000844 transformation Methods 0.000 description 1
Classifications
-
- 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
- C22C27/04—Alloys based on tungsten or molybdenum
-
- B22F1/0003—
-
- 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
- B22F3/18—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces by using pressure rollers
-
- 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
- C22C1/05—Mixtures of metal powder with non-metallic powder
- C22C1/058—Mixtures of metal powder with non-metallic powder by reaction sintering (i.e. gasless reaction starting from a mixture of solid metal compounds)
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C32/00—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ
- C22C32/0005—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ with at least one oxide and at least one of carbides, nitrides, borides or silicides as the main non-metallic constituents
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- 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
- B22F3/18—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces by using pressure rollers
- B22F2003/185—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces by using pressure rollers by hot rolling, below sintering temperature
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- 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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- 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
- B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy
- B22F2998/10—Processes characterised by the sequence of their steps
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- 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
- B22F2999/00—Aspects linked to processes or compositions used in powder metallurgy
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Abstract
The present invention provides a kind of tough molybdenum alloy of composite high-strength and preparation methods to be prepared from the following raw materials based on parts by weight：Titantium hydride is 5~20 parts, and zircoium hydride is 0~2 part, and composite reduction powder is 0.6~1.2 part, and molybdenum powder is 1000 parts；It according to mass ratio is 1 that the composite reduction powder, which is carbon dust, boron powder and aluminium powder,:1:The mixed powder of 1 composition.The good combination property of the tough molybdenum alloy of height of the invention, room temperature tensile intensity are greater than 1200MPa, and elongation is greater than 8.0%.The present invention is by stronger C, B, Al element of reproducibility as complex reducing agent, synergistic effect, it on the one hand can be in conjunction with oxygen, C element can be reduced in the segregation of intrinsic silicon and generate with matrix the influence of the second coarse phase, on the other hand, coherence or half coherence crystallography relationship can be formed with matrix, Strengthening and Toughening effect is significant.
Description
Technical field
The invention belongs to field of powder metallurgy, are related to molybdenum alloy, and in particular to a kind of tough molybdenum alloy of composite high-strength and preparation
Method.
Background technique
There is molybdenum the advantages that elevated temperature strength is high, fusing point is high, and thermal conductivity is good, corrosion resistance and good be widely used in it
Electronics glass closure material, nuclear power cladding nuclear fuels material, heater heat generating component, medical instrument rotary anode, the illiteracy of aerospace
Skin material, the important components such as nozzle of engine.But molybdenum seriously limits the use of molybdenum alloy because of black brittleness, and it is crisp to influence low temperature
The main reason for property is wherein oxygen, the segregation of nitrogen and high porosity.Therefore, oxygen, nitrogen reinforcing and low hole are developed and used
The novel molybdenum alloy of gap rate is raising molybdenum alloy performance and improves molybdenum alloy production technology, improves product quality to be molybdenum alloy research
The Main way that person and the producer make great efforts.
It is main to be realized by incorporation internal oxidation alloying in the method for design molybdenum alloy and improvement molybdenum alloy performance.
Wherein TZM alloy mainly passes through Ti, Zr solution strengthening and forms second-phase strength, rare-earth oxide doping molybdenum alloys with C element
Mainly by rare earth oxide doping strengthen, existing dipping molybdenum alloy mainly by incorporation hardening constituent based on, they it is each leisure not
Same application field shows superior performance.With the development of modern industry, the single performance of molybdenum alloy cannot be at present
The requirement for meeting client, to mechanical behavior under high temperature, low temperature moulding, high toughness and high recrystallization temperature excellent combination property
Molybdenum alloy exploitation and preparation seem very necessary and urgently.
Summary of the invention
In view of the deficiencies of the prior art, the present invention intends to provide a kind of tough molybdenum alloy of composite high-strength and system
Preparation Method, solves that molybdenum alloy performance in the prior art is single, the technical problem of comprehensive performance deficiency.
In order to solve the above-mentioned technical problem, the present invention is realised by adopting the following technical scheme：
A kind of tough molybdenum alloy of composite high-strength, including following raw material are made：Titantium hydride, composite reduction powder and molybdenum powder；Described
Composite reduction powder is carbon dust, boron powder and aluminium powder.
The present invention also has following technical characteristic：
Based on parts by weight, it is prepared from the following raw materials：Titantium hydride is 5~20 parts, and zircoium hydride is 0~2 part, composite reduction powder
It is 0.6~1.2 part, molybdenum powder is 1000 parts；
It according to mass ratio is 1 that the composite reduction powder, which is carbon dust, boron powder and aluminium powder,:1:The mixed powder of 1 composition.
The room temperature tensile intensity of the tough molybdenum alloy of height is greater than 1200MPa, and elongation is greater than 8.0%.
A kind of preparation method of the tough molybdenum alloy of composite high-strength, this method are matched using the tough molybdenum alloy of composite high-strength as described above
Side.
This method includes the following steps：
Step 1, a mixing：According to formula rate ingredient, titantium hydride, zircoium hydride and composite reduction powder are used three-dimensional
Batch mixer mixing 1h；
Step 2, rerolling：Titantium hydride, zircoium hydride and composite reduction powder are mixed again with molybdenum powder by what is be uniformly mixed
2~4h；
Step 3, ball milling：Powder after rerolling is packed into ball grinder, is filled with argon gas, is not higher than 200r/ in revolving speed
Ball milling 2h in the low energy ball mill of min；
Step 4, compacting：Powder cold isostatic compaction after ball milling, pressing pressure 180MPa, dwell time 15min；
Step 5, sintering：By the blank obtained after compacting multi-steps sintering in a hydrogen atmosphere, heat up 6h to 900 DEG C, then
2h is kept the temperature, is heated up 2h to 1200 DEG C, 3h is then kept the temperature, is heated up 3h to 1600 DEG C, 2h is then kept the temperature, is heated up 2h to 1900 DEG C, so
After keep the temperature 6h；
Step 6, rolling：To sintering blank rolling deformation, 1200 DEG C of cogging temperature, it is thick to roll rear plate for total deformation 90%
Spend 1.0mm.
Compared with prior art, the present invention having the following technical effect that：
(I) good combination property of the tough molybdenum alloy of height of the invention, room temperature tensile intensity are greater than 1200MPa, and elongation is big
In 8.0%.
(II) in terms of composition design, in TZM and MHC alloy system, on the one hand C element needs to form an oxidation in conjunction with oxygen
Matrix is discharged in carbon or carbon dioxide gas, on the other hand, C element hardening constituent oxide particle is restored to be formed it is carbide reinforced
Phase.But individually C element is easy to be segregated in Mo substrate, can generate coarse Mo with Mo substrate2C, to the mechanics of molybdenum alloy
Performance generates adverse effect.
The present invention is used as complex reducing agent by stronger C, B, Al element of reproducibility, acts synergistically, on the one hand can be with
Oxygen combines, and the content of harmful element oxygen in molybdenum system is effectively reduced, and reduces C element and gives birth in the segregation of intrinsic silicon and with matrix
At the influence of the second coarse phase, on the other hand, B, Al element and oxygen element can form the α-Al with high-temperature stability2O3、
B4C hardening constituent.α-the Al of water chestnut square structure2O3、B4C phase is similar to body-centred cubic Mo substrate structure, can form coherence with matrix
Or half coherence crystallography relationship, Strengthening and Toughening effect are significant.
(III) in preparation method, traditional TZM alloy is mainly that the solution strengthening of Ti, Zr element plays invigoration effect, therefore
Prevent TiH2、ZrH2The key for being oxidized into the high tough molybdenum alloy of preparation.Traditional preparation methods are once mixed by full element powders
Material-ball milling-compacting-sintering-processing is prepared, due to TiH2、ZrH2, C, B, Al element easily aoxidize, C, B, Al element
Relative to TiH2、ZrH2With stronger reproducibility, TiH2、ZrH2TiH can be effectively prevent when coexisting with C, B, Al element2、
ZrH2Oxidation.Therefore, this preparation uses a mixing, first by TiH2、ZrH2With C, B, Al mechanical mixture, TiH can be improved2、
ZrH2With the distribution that coexists of C, B, Al, furthermore by rerolling by TiH2、ZrH2It mixes, adopts with C, B, Al mixture with molybdenum powder
TiH is again prevented from argon gas protection ball milling2、ZrH2, C, B, Al and molybdenum powder aoxidize, improve the uniformity of powder mixing.Be conducive to
TiH2、ZrH2Pyrolytic simultaneously generates effective solution strengthening and high temperature α-Al2O3、B4The formation of the second phase of C.
Detailed description of the invention
Fig. 1 is the tough molybdenum alloy stress strain curve of composite high-strength.
Fig. 2 is the SEM photograph of the tough molybdenum alloy of composite high-strength.
Explanation is further explained in detail to particular content of the invention with reference to embodiments.
Specific embodiment
Specific embodiments of the present invention are given below, it should be noted that the invention is not limited to implement in detail below
Example, all equivalent transformations made on the basis of the technical solutions of the present application each fall within protection scope of the present invention.
Embodiment 1：
The present embodiment provides a kind of tough molybdenum alloy of composite high-strength and is prepared from the following raw materials based on parts by weight：Titantium hydride is
5.0g, zircoium hydride 0.8g, carbon dust 0.4g, boron powder are 0.4g, aluminium powder 0.4g, molybdenum powder 1000g.
The preparation method of the tough molybdenum alloy of height of the present embodiment includes the following steps：
Step 1, a mixing：According to formula rate ingredient, titantium hydride, zircoium hydride and composite reduction powder are used three-dimensional
Batch mixer mixing 1h；
Step 2, rerolling：Titantium hydride, zircoium hydride and composite reduction powder are mixed again with molybdenum powder by what is be uniformly mixed
2~4h；
Step 3, ball milling：Powder after rerolling is packed into ball grinder, is filled with argon gas, is not higher than 200r/ in revolving speed
Ball milling 2h in the low energy ball mill of min；
Step 4, compacting：Powder cold isostatic compaction after ball milling, pressing pressure 180MPa, dwell time 15min；
Step 5, sintering：The blank obtained after compacting is sintered in a hydrogen atmosphere, 1900 DEG C of sintering temperature, segmentation is burnt
Knot keeps the temperature 2h respectively in 900 DEG C of heating 6h, and 1200 DEG C of heating 2h keep the temperature 3h, and 1600 DEG C of heating 3h keep the temperature 2h, 1900 DEG C of heatings
2h keeps the temperature 6h；
Step 6, rolling：To sintering blank rolling deformation, 1200 DEG C of cogging temperature, it is thick to roll rear plate for total deformation 90%
Spend 1.0mm.
The tough molybdenum alloy stress strain curve of height of the present embodiment is as shown in Figure 1, the SEM of the tough molybdenum alloy of height of the present embodiment shines
Piece is as shown in Figure 2.
The room temperature tensile intensity of height made from the present embodiment is tough molybdenum alloy is 1210MPa, elongation 8.4%.
Comparative example 1：
The present embodiment provides a kind of tough molybdenum alloy and is prepared from the following raw materials based on parts by weight：Titantium hydride is 5.0g, hydrogen
Change zirconium is 0.8g, carbon dust 0.4g, molybdenum powder 1000g.Only use the carbon dust in the composite reduction powder in embodiment 1.
The preparation method of the molybdenum alloy of this comparative example is substantially the same manner as Example 1.
The room temperature tensile intensity of molybdenum alloy made from this comparative example is 1026MPa, elongation 7.5%.
Comparative example 2：
The present embodiment provides a kind of tough molybdenum alloy, is formulated identical as the formula of embodiment 1.Difference is the molybdenum of this comparative example
The preparation method of alloy is different from embodiment 1.
The preparation method of the molybdenum alloy of this comparative example includes the following steps：
Step 1, mixing：According to formula rate ingredient, by titantium hydride, zircoium hydride, magnesium powder and with molybdenum powder three-dimensional blender is used
Machine mixes 3~5h；
Step 2, ball milling：Powder after rerolling is packed into ball grinder, is filled with argon gas, is not higher than 400r/ in revolving speed
Ball milling 2h in the low energy ball mill of min；
Step 3, compacting：It is essentially identical with the step of embodiment 1 four.
Step 4, sintering：The blank obtained after compacting is sintered under vacuum atmosphere, 1900 DEG C of sintering temperature, when sintering
Between 30 hours, furnace cooling obtains molybdenum alloy material；
Step 5, rolling：It is essentially identical with the step of embodiment 1 six.
The room temperature tensile intensity of molybdenum alloy made from this comparative example is 1084MPa, elongation 7.8%.
Comparative example 3：
The present embodiment provides a kind of tough molybdenum alloy, and difference is, the formula preparation method of this comparative example with embodiment 1 not
Together.
The formula of this comparative example is identical as comparative example 1.
The preparation method of the molybdenum alloy of this comparative example and comparative example 2 are essentially identical.
The room temperature tensile intensity of molybdenum alloy made from this comparative example is 965MPa, elongation 6.8%.
Embodiment 2：
The present embodiment provides a kind of tough molybdenum alloy of composite high-strength and is prepared from the following raw materials based on parts by weight：Titantium hydride is
10.0g, zircoium hydride 1.0g, carbon dust 0.2g, boron powder are 0.2g, aluminium powder 0.2g, molybdenum powder 1000g.
The preparation method of the tough molybdenum alloy of the composite high-strength of the present embodiment is substantially the same manner as Example 1.
The tough molybdenum alloy stress strain curve of the composite high-strength of the present embodiment and Fig. 1 are essentially identical, and the composite high-strength of the present embodiment is tough
The SEM photograph of molybdenum alloy and Fig. 2 are essentially identical.
The room temperature tensile intensity of the tough molybdenum alloy of composite high-strength made from the present embodiment is 1218MPa, elongation 8.3%.
Embodiment 3：
The present embodiment provides a kind of tough molybdenum alloy of composite high-strength and is prepared from the following raw materials based on parts by weight：Titantium hydride is
20.0g, zircoium hydride 2.0g, carbon dust 0.4g, boron powder are 0.4g, aluminium powder 0.4g, molybdenum powder 1000g.
The preparation method of the tough molybdenum alloy of the composite high-strength of the present embodiment is substantially the same manner as Example 1.
The tough molybdenum alloy stress strain curve of the composite high-strength of the present embodiment and Fig. 1 are essentially identical, and the tough molybdenum of height of the present embodiment closes
The SEM photograph and Fig. 2 of gold are essentially identical.
The room temperature tensile intensity of the tough molybdenum alloy of composite high-strength made from the present embodiment is 1220MPa, elongation 8.2%.
Embodiment 4：
The present embodiment provides a kind of tough molybdenum alloy of composite high-strength and is prepared from the following raw materials based on parts by weight：Titantium hydride is
5.0g, carbon dust 0.4g, boron powder are 0.4g, aluminium powder 0.4g, molybdenum powder 1000g.
The preparation method of the tough molybdenum alloy of the composite high-strength of the present embodiment is substantially the same manner as Example 1.
The tough molybdenum alloy stress strain curve of the composite high-strength of the present embodiment and Fig. 1 are essentially identical, and the tough molybdenum of height of the present embodiment closes
The SEM photograph and Fig. 2 of gold are essentially identical.
The room temperature tensile intensity of the tough molybdenum alloy of composite high-strength made from the present embodiment is 1245MPa, elongation 8.4%.
Embodiment 5：
The present embodiment provides a kind of tough molybdenum alloy of composite high-strength and is prepared from the following raw materials based on parts by weight：Titantium hydride is
10.0g, carbon dust 0.2g, boron powder are 0.2g, aluminium powder 0.2g, molybdenum powder 1000g.
The preparation method of the tough molybdenum alloy of the composite high-strength of the present embodiment is substantially the same manner as Example 1.
The tough molybdenum alloy stress strain curve of the composite high-strength of the present embodiment and Fig. 1 are essentially identical, and the tough molybdenum of height of the present embodiment closes
The SEM photograph and Fig. 2 of gold are essentially identical.
The room temperature tensile intensity of height made from the present embodiment is tough molybdenum alloy is 1253MPa, elongation 8.4%.
Embodiment 6：
The present embodiment provides a kind of tough molybdenum alloy of composite high-strength and is prepared from the following raw materials based on parts by weight：Titantium hydride is
20.0g, carbon dust 0.4g, boron powder are 0.4g, aluminium powder 0.4g, molybdenum powder 1000g.
The preparation method of the tough molybdenum alloy of the composite high-strength of the present embodiment is substantially the same manner as Example 1.
The tough molybdenum alloy stress strain curve of the composite high-strength of the present embodiment and Fig. 1 are essentially identical, and the tough molybdenum of height of the present embodiment closes
The SEM photograph and Fig. 2 of gold are essentially identical.
The room temperature tensile intensity of the tough molybdenum alloy of composite high-strength made from the present embodiment is 1280MPa, elongation 8.7%.
Claims (5)
1. a kind of tough molybdenum alloy of composite high-strength, which is characterized in that be made including following raw material：Titantium hydride, composite reduction powder and molybdenum
Powder；The composite reduction powder is carbon dust, boron powder and aluminium powder.
2. the tough molybdenum alloy of composite high-strength as described in claim 1, which is characterized in that based on parts by weight, by following raw material system
At：Titantium hydride is 5~20 parts, and zircoium hydride is 0~2 part, and composite reduction powder is 0.6~1.2 part, and molybdenum powder is 1000 parts；
It according to mass ratio is 1 that the composite reduction powder, which is carbon dust, boron powder and aluminium powder,:1:The mixed powder of 1 composition.
3. the tough molybdenum alloy of composite high-strength as claimed in claim 2, which is characterized in that the room temperature of the tough molybdenum alloy of height is anti-
Tensile strength is greater than 1200MPa, and elongation is greater than 8.0%.
4. a kind of preparation method of the tough molybdenum alloy of composite high-strength, which is characterized in that this method is using as claimed in claim 2 multiple
Close high tough molybdenum alloy formula.
5. the preparation method of the tough molybdenum alloy of composite high-strength as claimed in claim 4, which is characterized in that this method includes following step
Suddenly：
Step 1, a mixing：According to formula rate ingredient, titantium hydride, zircoium hydride and composite reduction powder are used into three-dimensional blender
Machine mixing 1h；
Step 2, rerolling：To be uniformly mixed titantium hydride, zircoium hydride and composite reduction powder mix with molybdenum powder to 2 again~
4h；
Step 3, ball milling：Powder after rerolling is packed into ball grinder, is filled with argon gas, in revolving speed not higher than 200r/min's
Ball milling 2h in low energy ball mill；
Step 4, compacting：Powder cold isostatic compaction after ball milling, pressing pressure 180MPa, dwell time 15min；
Step 5, sintering：By the blank obtained after compacting, in a hydrogen atmosphere then multi-steps sintering, 6h to 900 DEG C of heating are kept the temperature
2h heats up 2h to 1200 DEG C, then keeps the temperature 3h, heats up 3h to 1600 DEG C, then keeps the temperature 2h, heats up 2h to 1900 DEG C, then protects
Warm 6h；
Step 6, rolling：To sintering blank rolling deformation, 1200 DEG C of cogging temperature, total deformation 90% rolls rear plate thickness
1.0mm。
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| CN110184487A (en) * | 2019-06-03 | 2019-08-30 | 东睦新材料集团股份有限公司 | A kind of powder metallurgy alumina-base material and preparation method thereof |
| CN110983090A (en) * | 2019-12-31 | 2020-04-10 | 金堆城钼业股份有限公司 | Sintering method of carbon-containing molybdenum alloy |
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| CN102534334A (en) * | 2012-02-21 | 2012-07-04 | 西安建筑科技大学 | High-strength and high-toughness molybdenum alloy and preparation method thereof |
| CN104150908A (en) * | 2014-08-22 | 2014-11-19 | 攀枝花学院 | Titanium-molybdenum carbide ceramic powder and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102534334A (en) * | 2012-02-21 | 2012-07-04 | 西安建筑科技大学 | High-strength and high-toughness molybdenum alloy and preparation method thereof |
| CN104150908A (en) * | 2014-08-22 | 2014-11-19 | 攀枝花学院 | Titanium-molybdenum carbide ceramic powder and preparation method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110184487A (en) * | 2019-06-03 | 2019-08-30 | 东睦新材料集团股份有限公司 | A kind of powder metallurgy alumina-base material and preparation method thereof |
| CN110983090A (en) * | 2019-12-31 | 2020-04-10 | 金堆城钼业股份有限公司 | Sintering method of carbon-containing molybdenum alloy |
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