CN108866414A - A kind of high tough molybdenum alloy and preparation method - Google Patents
A kind of high tough molybdenum alloy and preparation method Download PDFInfo
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- 229910001182 Mo alloy Inorganic materials 0.000 title claims abstract description 74
- 238000002360 preparation method Methods 0.000 title claims description 23
- 150000004678 hydrides Chemical class 0.000 claims abstract description 38
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims abstract description 29
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims abstract description 29
- 229910052735 hafnium Inorganic materials 0.000 claims abstract description 12
- 239000002994 raw material Substances 0.000 claims abstract description 12
- 238000005984 hydrogenation reaction Methods 0.000 claims abstract description 11
- 239000007789 gas Substances 0.000 claims abstract description 9
- VBJZVLUMGGDVMO-UHFFFAOYSA-N hafnium atom Chemical compound [Hf] VBJZVLUMGGDVMO-UHFFFAOYSA-N 0.000 claims abstract description 8
- 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
- 239000000843 powder Substances 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 7
- 238000002156 mixing Methods 0.000 claims description 7
- 238000005096 rolling process Methods 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 6
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 5
- 229910052786 argon Inorganic materials 0.000 claims description 5
- 239000001257 hydrogen Substances 0.000 claims description 5
- 229910052739 hydrogen Inorganic materials 0.000 claims description 5
- USPBSVTXIGCMKY-UHFFFAOYSA-N hafnium Chemical compound [Hf].[Hf] USPBSVTXIGCMKY-UHFFFAOYSA-N 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
- 229910052719 titanium Inorganic materials 0.000 claims description 3
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims 1
- 238000010438 heat treatment Methods 0.000 claims 1
- 239000010936 titanium Substances 0.000 claims 1
- 239000011777 magnesium Substances 0.000 abstract description 13
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 9
- 239000001301 oxygen Substances 0.000 abstract description 9
- 229910052760 oxygen Inorganic materials 0.000 abstract description 9
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 abstract description 6
- 229910052750 molybdenum Inorganic materials 0.000 abstract description 6
- 239000011733 molybdenum Substances 0.000 abstract description 6
- 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
- 239000000470 constituent Substances 0.000 abstract description 3
- 239000000395 magnesium oxide Substances 0.000 abstract description 3
- 238000005204 segregation Methods 0.000 abstract description 3
- 229910052710 silicon Inorganic materials 0.000 abstract description 3
- 239000010703 silicon Substances 0.000 abstract description 3
- 239000000758 substrate Substances 0.000 abstract description 3
- 239000003638 chemical reducing agent Substances 0.000 abstract description 2
- RKTYLMNFRDHKIL-UHFFFAOYSA-N copper;5,10,15,20-tetraphenylporphyrin-22,24-diide Chemical compound [Cu+2].C1=CC(C(=C2C=CC([N-]2)=C(C=2C=CC=CC=2)C=2C=CC(N=2)=C(C=2C=CC=CC=2)C2=CC=C3[N-]2)C=2C=CC=CC=2)=NC1=C3C1=CC=CC=C1 RKTYLMNFRDHKIL-UHFFFAOYSA-N 0.000 abstract description 2
- 238000002050 diffraction method Methods 0.000 abstract description 2
- 230000009467 reduction Effects 0.000 abstract description 2
- 230000000052 comparative effect Effects 0.000 description 14
- 229910000568 zirconium hydride Inorganic materials 0.000 description 10
- 229910000048 titanium hydride Inorganic materials 0.000 description 9
- 239000000956 alloy Substances 0.000 description 5
- 229910052749 magnesium Inorganic materials 0.000 description 5
- 238000007254 oxidation reaction Methods 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
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 230000003647 oxidation Effects 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
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 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
- 239000000428 dust Substances 0.000 description 2
- 238000010348 incorporation Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 229910001404 rare earth metal oxide Inorganic materials 0.000 description 2
- 229910003178 Mo2C Inorganic materials 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
- 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
- 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
- 230000003760 hair shine Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000004519 manufacturing process Methods 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
- 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
-
- 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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- Chemical Kinetics & Catalysis (AREA)
- Powder Metallurgy (AREA)
Abstract
The present invention provides a kind of high tough molybdenum alloys to be prepared from the following raw materials based on parts by weight：Titantium hydride is 5~20 parts, and zircoium hydride is 0.8~2 part, and magnesium powder is 0.2~0.4 part, and molybdenum powder is 1000 parts；Or titantium hydride is 5~20 parts, hydrogenation hafnium is 0.8~2 part, and magnesium powder is 0.2~0.4 part, and molybdenum powder is 1000 parts.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 the stronger Mg element of reproducibility as reducing agent, it on the one hand can be in conjunction with oxygen, the content of harmful element oxygen in molybdenum system is effectively reduced, it reduces C element reduction and generates the hole that gas generates, generate in the segregation of intrinsic silicon and with matrix the influence of the second coarse phase, on the other hand, Mg element and oxygen element can form the magnesia hardening constituent with high-temperature stability.The magnesia phase of tetragonal is similar to body-centred cubic Mo substrate structure, and coherence or half coherence crystallography relationship can be formed with matrix, and 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 high tough molybdenum alloy 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 high tough molybdenum alloy and preparation side
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 high tough molybdenum alloy, including following raw material are made：Titantium hydride, zircoium hydride, magnesium powder and molybdenum powder；Or titantium hydride,
Hydrogenate hafnium, magnesium powder and molybdenum powder.
Specifically, based on parts by weight, being prepared from the following raw materials：Titantium hydride is 5~20 parts, and zircoium hydride is 0.8~2 part,
Magnesium powder is 0.2~0.4 part, and molybdenum powder is 1000 parts；
Or titantium hydride is 5~20 parts, hydrogenation hafnium is 0.8~2 part, and magnesium powder is 0.2~0.4 part, and molybdenum powder is 1000 parts.
The room temperature tensile intensity of the tough molybdenum alloy of height is greater than 1200MPa, and elongation is greater than 8.0%.
The present invention also has following technical characteristic：
The present invention also protects a kind of preparation method of high tough molybdenum alloy, and this method is closed using high tough molybdenum as described above
Gold formula.
This method includes the following steps：
Step 1, a mixing：According to formula rate ingredient, titantium hydride, zircoium hydride or hydrogenation hafnium and magnesium powder are used three
Tie up batch mixer mixing 1h；
Step 2, rerolling：Titantium hydride, zircoium hydride or hydrogenation hafnium and magnesium powder and molybdenum powder are mixed again by what is be uniformly mixed
Close 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 the gas that C element is formed can generate hole in intrinsic silicon, C element is easy to be segregated, and can generate with Mo substrate coarse
Mo2C generates adverse effect to the mechanical property of molybdenum alloy.
By the stronger Mg element of reproducibility, as reducing agent, on the one hand molybdenum can be effectively reduced in conjunction with oxygen in the present invention
The content of harmful element oxygen in system, reduce C element reduction generate gas generate hole, intrinsic silicon segregation and with
Matrix generates the influence of the second coarse phase, and on the other hand, Mg element and oxygen element can form the oxidation with high-temperature stability
Magnesium fortified phase.The magnesia phase of tetragonal is similar to body-centred cubic Mo substrate structure, and coherence or half can be formed with matrix
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/Hf element plays invigoration effect, because
This prevents TiH2、ZrH2/HfH2The key for being oxidized into the high tough molybdenum alloy of preparation.Traditional preparation methods pass through full element powder
A last mixing-ball milling-compacting-sintering-processing is prepared, due to TiH2、ZrH2/HfH2, magnesium elements easily aoxidize,
Magnesium elements are relative to TiH2、ZrH2/HfH2With stronger reproducibility, TiH2、ZrH2/HfH2It can be effective when being coexisted with magnesium elements
Prevent TiH2、ZrH2/HfH2Oxidation.Therefore, this preparation uses a mixing, first by TiH2、ZrH2/HfH2It is mixed with Mg machinery
It closes, can be improved TiH2、ZrH2/HfH2With the distribution that coexists of Mg, furthermore by rerolling by TiH2、ZrH2/HfH2It is mixed with Mg
It closes material to mix with molybdenum powder, TiH is again prevented from using argon gas protection ball milling2、ZrH2/HfH2, Mg and molybdenum powder aoxidize, it is mixed to improve powder
The uniformity of conjunction.Be conducive to TiH2、ZrH2/HfH2Pyrolytic simultaneously generates the second phase of effective solution strengthening and high-temperature oxydation magnesium
Formation.
Detailed description of the invention
Fig. 1 is high tough molybdenum alloy stress strain curve.
Fig. 2 is the SEM photograph of high tough molybdenum alloy.
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 high tough molybdenum alloy and is prepared from the following raw materials based on parts by weight：Titantium hydride is
5.0g, zircoium hydride 0.8g, magnesium 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 magnesium powder are used into three-dimensional material mixer
Mix 1h；
Step 2, rerolling：Titantium hydride, zircoium hydride and magnesium powder are mixed into 2~4h with molybdenum powder again by what is be uniformly mixed；
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.
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 1215MPa, elongation 8.2%.
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.The magnesium powder in the formula of embodiment 1 is replaced with into carbon dust.
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 high tough molybdenum alloy and is prepared from the following raw materials based on parts by weight：Titantium hydride is
10.0g, zircoium hydride 1.0g, magnesium powder 0.2g, molybdenum powder 1000g.
The preparation method of the tough molybdenum alloy of height of the present embodiment is substantially the same manner as Example 1.
The tough molybdenum alloy stress strain curve of height and Fig. 1 of the present embodiment are essentially identical, the tough molybdenum alloy of height of the present embodiment
SEM photograph is essentially identical with Fig. 2.
The room temperature tensile intensity of height made from the present embodiment is tough molybdenum alloy is 1223MPa, elongation 8.2%.
Embodiment 3：
The present embodiment provides a kind of high tough molybdenum alloy and is prepared from the following raw materials based on parts by weight：Titantium hydride is
20.0g, zircoium hydride 2.0g, magnesium powder 0.4g, molybdenum powder 1000g.
The preparation method of the tough molybdenum alloy of height of the present embodiment is substantially the same manner as Example 1.
The tough molybdenum alloy stress strain curve of height and Fig. 1 of the present embodiment are essentially identical, the tough molybdenum alloy of height of the present embodiment
SEM photograph is essentially identical with Fig. 2.
The room temperature tensile intensity of height made from the present embodiment is tough molybdenum alloy is 1226MPa, elongation 8.1%.
Embodiment 4：
The present embodiment provides a kind of high tough molybdenum alloy and is prepared from the following raw materials based on parts by weight：Titantium hydride is
5.0g, hydrogenation hafnium are 0.8g, magnesium powder 0.4g, molybdenum powder 1000g.
The preparation method of the tough molybdenum alloy of height of the present embodiment is substantially the same manner as Example 1.
The tough molybdenum alloy stress strain curve of height and Fig. 1 of the present embodiment are essentially identical, the tough molybdenum alloy of height of the present embodiment
SEM photograph is essentially identical with Fig. 2.
The room temperature tensile intensity of height made from the present embodiment is tough molybdenum alloy is 1247MPa, elongation 8.3%.
Embodiment 5：
The present embodiment provides a kind of high tough molybdenum alloy and is prepared from the following raw materials based on parts by weight：Titantium hydride is
10.0g, hydrogenation hafnium are 1.0g, magnesium powder 0.2g, molybdenum powder 1000g.
The preparation method of the tough molybdenum alloy of height of the present embodiment is substantially the same manner as Example 1.
The tough molybdenum alloy stress strain curve of height and Fig. 1 of the present embodiment are essentially identical, the tough molybdenum alloy of height of the present embodiment
SEM photograph is essentially identical with Fig. 2.
The room temperature tensile intensity of height made from the present embodiment is tough molybdenum alloy is 1257MPa, elongation 8.3%.
Embodiment 6：
The present embodiment provides a kind of high tough molybdenum alloy and is prepared from the following raw materials based on parts by weight：Titantium hydride is
20.0g, hydrogenation hafnium are 2.0g, magnesium powder 0.4g, molybdenum powder 1000g.
The preparation method of the tough molybdenum alloy of height of the present embodiment is substantially the same manner as Example 1.
The tough molybdenum alloy stress strain curve of height and Fig. 1 of the present embodiment are essentially identical, the tough molybdenum alloy of height of the present embodiment
SEM photograph is essentially identical with Fig. 2.
The room temperature tensile intensity of height made from the present embodiment is tough molybdenum alloy is 1284MPa, elongation 8.6%.
Claims (5)
1. a kind of high tough molybdenum alloy, which is characterized in that be made including following raw material：Titantium hydride, zircoium hydride, magnesium powder and molybdenum powder；
Or titantium hydride, hydrogenation hafnium, magnesium powder and molybdenum powder.
2. high tough molybdenum alloy as described in claim 1, which is characterized in that based on parts by weight, be prepared from the following raw materials：Hydrogen
Changing titanium is 5~20 parts, and zircoium hydride is 0.8~2 part, and magnesium powder is 0.2~0.4 part, and molybdenum powder is 1000 parts；
Or titantium hydride is 5~20 parts, hydrogenation hafnium is 0.8~2 part, and magnesium powder is 0.2~0.4 part, and molybdenum powder is 1000 parts.
3. high tough molybdenum alloy as described in claim 1, which is characterized in that the room temperature tensile of the tough molybdenum alloy of height is strong
Degree is greater than 1200MPa, and elongation is greater than 8.0%.
4. a kind of preparation method of high tough molybdenum alloy, which is characterized in that this method is using as claimed in claim 2 high tough
Molybdenum alloy formula.
5. the preparation method of high tough molybdenum alloy as claimed in claim 4, which is characterized in that this method includes the following steps：
Step 1, a mixing：According to formula rate ingredient, titantium hydride, zircoium hydride or hydrogenation hafnium and magnesium powder are used three-dimensional mixed
Material machine mixing 1h；
Step 2, rerolling：Titantium hydride, zircoium hydride or hydrogenation hafnium and magnesium powder are mixed 2 with molybdenum powder again by what is be uniformly mixed
~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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| CN104651696A (en) * | 2015-03-13 | 2015-05-27 | 潍坊学院 | TiC dispersion-strengthened molybdenum alloy and preparation method thereof |
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| CN104651696A (en) * | 2015-03-13 | 2015-05-27 | 潍坊学院 | TiC dispersion-strengthened molybdenum alloy and preparation method thereof |
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