CN106676325A - As-cast fine-grain high-strength titanium-zirconium-aluminum-niobium alloy and preparation method thereof - Google Patents
As-cast fine-grain high-strength titanium-zirconium-aluminum-niobium alloy and preparation method thereof Download PDFInfo
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- CN106676325A CN106676325A CN201710036688.2A CN201710036688A CN106676325A CN 106676325 A CN106676325 A CN 106676325A CN 201710036688 A CN201710036688 A CN 201710036688A CN 106676325 A CN106676325 A CN 106676325A
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Abstract
Disclosed is an as-cast fine-grain high-strength titanium-zirconium-aluminum-niobium alloy. The as-cast fine-grain high-strength titanium-zirconium-aluminum-niobium alloy comprises the following chemical components of 10-40 wt% of Zr, 5.6-6.5 wt% of Al, 6.25-7.26 wt% of Nb, 46.8-77.4 wt% of Ti and the balance unavoidable impurities. A preparation method of the alloy mainly includes the steps that zirconium and niobium are put in a smelting furnace, vacuumizing is performed till the vacuum degree reaches 8.5*10<-3> Pa, argon is fed, smelting is performed at least 6 times, and a zirconium-niobium intermediate alloy is obtained; and the zirconium-niobium intermediate alloy, titanium and aluminum are put in an electric arc furnace, vacuumizing is performed till the vacuum degree reaches 8.5*10<-3> Pa, argon is fed, smelting is performed at 160-190 A to form a liquid alloy, smelting is performed for 2 to 3 minutes at 200-240 A, smelting is performed for 3 to 5 minutes at 280-300 A, the pressure intensity of cooling water in a crucible is adjusted within the range of 1-1.8 bar, and smelting is repeatedly performed at least 6 times. According to the as-cast fine-grain high-strength titanium-zirconium-aluminum-niobium alloy and the preparation method thereof, forging and deformation are not needed, the production period is short, the manufacturing cost is low, and the mechanical properties of the prepared as-cast fine-grain high-strength titanium-zirconium-aluminum-niobium alloy are good.
Description
Technical field
The invention belongs to field of material technology, more particularly to a kind of alloy and preparation method thereof.
Background technology
Metal zirconium or Titanium have similar crystal structure and close physical and chemical performance, with traditional iron structure
Material is compared, the knot such as all significantly larger than conventional steel alloy of relatively low density, good corrosion resistance and high-temperature resistance
Structure material.But the mechanical property of pure metal zirconium or Titanium is not high, its tensile strength is mostly in below 400MPa, it is impossible to as
Structural material is used, and its excellent physicochemical property also cannot be fully played.If added in metal zirconium or Titanium
Other metallic elements such as aluminum, vanadium or niobium, by technologies such as solution strengthening, obtain can metal zirconium or the mechanical property of Titanium
Significantly improve.Currently as structural material using relatively more titanium alloys be TC4 (concrete composition is Ti6Al4V,
Wt% there is) alloy, the alloy higher mechanical property (tensile strength is 900MPa) and heat-resisting ability (to be adapted at 600 DEG C
Use under environment), but the deficiency of the alloy is hardness relatively low (RHC28~32), and anti-wear performance is poor, is not suitable for for manufacturing tool
There is the mechanism member of relative motion.TC20 (concrete composition be Ti-6Al-7Nb, wt%) alloy of the another kind with commercial grades, it is main
If being applied in bio-medical field, it is not employed as structural material to use.The zircaloys such as common Zr-2 or Zr-4
Also the cladding materials being mainly used as in nuclear industry in reactor, as the zirconium of structural material applications in other industrial circles
Alloy is simultaneously few, and composition is limited.
At present industrial as cast condition titanium alloy or zircaloy, cause its intensity relatively low because its crystallite dimension is thick, are
The Strengthening and Toughening of this kind of alloy is realized, conventional process meanses are to carry out working hardening to improve its mechanical property by cogging forging
Energy.The principle of working hardening is the forging process by multiple upsetting pull, makes thick die break become tiny crystal grain, while
It is aided with the heat treatment technics such as solution hardening or annealing so as to which mechanical property is improved.It is with Authorization Notice No.
All it is by the titanium-zirconium alloy or zirconium to as cast condition as a example by two patent documentations of the B of CN102260805 B and CN 102260807
Alloy is carried out after multiple upsetting pull deformation, then annealed process is improving the intensity of alloy.The two granted patent reports
The alloy strength in road is respectively 1028MPa and 1292MPa.The technology of preparing of above-mentioned alloy is using the as cast condition obtained to melting
Alloy carries out cogging forging, the technique for then carrying out multiple upsetting pull process, thus cause complex technical process, long the production cycle,
Preparation cost is high.
The content of the invention
It is an object of the invention to provide a kind of do not need forging deformation technique, can shorten the production cycle, reduce manufacture
Good as cast condition fine grain high strength titanium zirconium aluminum niobium alloy of cost, mechanical property and preparation method thereof.
The as cast condition fine grain high strength titanium zirconium aluminum niobium alloy of the present invention, its chemical composition mass percent (wt%) is:Zr:10
~40;Al:5.6~6.5;Nb:6.25~7.26;Ti:46.8~77.4%, remaining is inevitable impurity;
The raw material of described various composition is respectively technical grade sponge zirconium and titanium sponge and fine aluminium and pure niobium.
The preparation method of above-mentioned as cast condition fine grain high strength titanium zirconium aluminum niobium alloy:
(1) preparation of intermediate alloy:Because metal zirconium and metal niobium belong to high-melting-point refractory metal, if directly by metal zirconium
With metal niobium and titanium, aluminum etc. together with melting be likely to result in melt completely and cause materials microstructure performance uneven, therefore,
Before the preparation of titanium zirconium aluminum niobium alloy is carried out, zirconium niobium intermediate alloy is first prepared;Metal zirconium and metal niobium is clean and dry
Afterwards, it is put in the water jacketed copper crucible in vacuum non-consumable smelting furnace, copper crucible inwall is cleared up in advance and dry with alcohol wipe
Only, it is to avoid introduce other impurities, in fusion process, vacuum in furnace chamber is evacuated to into 8.5 × 10 using vacuum system-3Pa, then
High-purity argon gas are filled with as protective gas, conventional melting is carried out to zirconium niobium intermediate alloy, at least melt back 6 times is guaranteeing zirconium niobium
Intermediate alloy composition is uniform;
(2) preparation of titanium zirconium aluminum niobium alloy:According to metal zirconium in intermediate alloy and the content of metal niobium, using titanium and metal
The characteristics of zirconium and niobium infinitely dissolve, it is equipped with Titanium and metallic aluminium;By the zirconium niobium intermediate alloy of step (1) and Titanium and metal
Aluminum is put in the cold-crucible of vacuum non-consumable arc furnace carries out melting, and the process of melting is to take out vacuum in furnace chamber
To 8.5 × 10-3Pa, is then filled with high-purity argon gas as protective gas, and to titanium zirconium aluminum niobium alloy melting is carried out;
1. first under the electric current of 160~190A by raw material melting be liquid alloy solution, then in the electricity of 200~240A
Melting is flowed down 2~3 minutes, then using melting 3~5 minutes under the electric current of 280~300A.
2. the pressure of water jacketed copper crucible cooling water is adjusted in the range of 1~1.8bar, by the pressure for changing cooling water
Can Indirect method water jacketed copper crucible cooling water 0.4~0.6m/s of flowing velocity, reach adjustment water jacketed copper crucible cooling capacity,
Realize 300~400 DEG C/min of control of alloy melt solidification cooling rate.Change the electric current of fusion process or change water-cooled copper earthenware
The flowing velocity of crucible cooling water, can indirectly change the temperature of liquid alloy melt and the solidification cooling capacity of water jacketed copper crucible.
Its objective is the temperature and solidification behavior for controlling alloy melt, to guarantee to obtain the high strength titanium zirconium aluminum niobium of tiny as-cast structure
Alloy;
3. when titanium zirconium aluminum niobium alloy is cast in melting, melt back more than 6 times are at least wanted, it is ensured that titanium zirconium aluminum niobium alloy ingot casting
Composition is uniform.
Compared with the prior art the present invention has advantages below:
(1) in the technology of preparing of existing zircaloy or titanium alloy, the zircaloy (such as zirconium titanium aluminium vanadium system alloy) of as cast condition
Or titanium alloy (such as TC4 alloys) causes its as cast condition intensity very low because its tissue is thick, it is necessary to made by forging deformation thick
Historrhexis carries out crystal grain refinement and could obtain the intensity of requirement.The titanium zirconium aluminum niobium alloy of the present invention, without by forging deformation
Comparatively fine α phases lath and equiax crystal can be obtained, due to not needing forging deformation technical process, production week can be shortened
Phase, reduce manufacturing cost;
(2) by changing the electric current of fusion process or changing the flowing velocity of water jacketed copper crucible cooling water, can control indirectly
The temperature of liquid alloy melt processed and the solidification cooling capacity of water jacketed copper crucible.Guarantee to obtain tiny to realize quick cooling
α phases lath and equiax crystal mixing as-cast structure;
(3) the titanium zirconium aluminum niobium alloy for obtaining room temperature uniaxial tension mechanical property and documents (Wang Weimin, Luo Binli.
China YouSe Acta Metallurgica Sinica, 2013,23 (1):S336-s342) mechanical property of the titanium alloy (TC20 alloys) of report is compared,
Up to 1123MPa, maximum pulling strength is 1490MPa to maximum yield strength under as-cast condition, than documents 845MPa and
985MPa has been respectively increased 32.90% and 51.27%.
Description of the drawings
Fig. 1 is the tensile sample dimensional drawing of as cast condition fine grain high strength titanium zirconium aluminum niobium alloy prepared by the present invention.
Fig. 2 is the metallographic optical microscopy map of titanium zirconium aluminum niobium alloy prepared by embodiment 4.
Fig. 3 is the true stress-true strain figure of as cast condition fine grain high strength titanium zirconium aluminum niobium alloy prepared by the present invention.
Specific embodiment
Embodiment 1
(1) intermediate alloy is prepared:The mass ratio for first taking technical grade sponge zirconium and pure niobium is 9.3463g and pure niobium 6.5424g,
After by above-mentioned metal zirconium and metal niobium cleaning and drying, vacuum non-consumable smelting furnace (DHL-400 types, Chinese Academy of Sciences Shen are put into
Positive instrument development centered finite company) in water jacketed copper crucible in, copper crucible inwall is cleared up in advance and dry with alcohol wipe
Only, it is to avoid introduce other impurities.In fusion process, vacuum in furnace chamber is evacuated to into 8.5 × 10 using vacuum system-3Pa, then
High-purity argon gas are filled with as protective gas, melting is carried out to zirconium niobium intermediate alloy, melt back 6 times is guaranteeing zirconium niobium intermediate alloy
Composition is uniform;
(2) preparation of titanium zirconium aluminum niobium alloy:Take above-mentioned zirconium niobium intermediate alloy 15.8887g, titanium sponge 72.3404g and fine aluminium
5.2339g;Zirconium niobium intermediate alloy is put in the cold-crucible of vacuum non-consumable arc furnace with Titanium and metallic aluminium and is melted
Refining, by vacuum in furnace chamber 8.5 × 10 are evacuated to-3Pa, is then filled with high-purity argon gas as protective gas, first in the electric current of 160A
Lower is liquid alloy solution by raw material melting, then melting 2 minutes under the electric current of 200A, then using under the electric current of 280A
Melting 3 minutes;The pressure of water jacketed copper crucible cooling water is adjusted in the range of 1bar, the flowing of water jacketed copper crucible cooling water is adjusted
Speed is 0.4m/s, reaches the cooling capacity of adjustment water jacketed copper crucible, realizes that alloy melt solidification cooling rate is controlled 300
DEG C/min, melt back 6 times, it is ensured that the composition of titanium zirconium aluminum niobium alloy ingot casting is uniform.
The as cast condition titanium zirconium aluminum niobium alloy prepared is cut into into shape as shown in Figure 1 with wire cutting, tension test is carried out, thus
Obtain its mechanical property related data;Uniaxial tensile test is carried out using the universal testing machine of model Instron5982
(band extensometer), rate of extension is set as 5 × 10-4s-1, its mechanical experimental results is as shown in table 1;Its trus stress-very should
In varied curve such as Fig. 3 shown in the curve of embodiment 1, the maximum tensile strength is 1022MPa;
Embodiment 2
(1) intermediate alloy is prepared:Technical grade sponge zirconium 18.7939g and pure niobium 5.873g is first taken, by above-mentioned metal zirconium and gold
After category niobium is clean and dry, (DHL-400 types, Chinese Academy of Sciences Shenyang instrument development center have to be put into vacuum non-consumable smelting furnace
Limit company) in water jacketed copper crucible in, copper crucible inwall is cleared up in advance and clean with alcohol wipe, it is to avoid introduce other miscellaneous
Matter.In fusion process, vacuum in furnace chamber is evacuated to into 8.5 × 10 using vacuum system-3Pa, is then filled with high-purity argon gas as guarantor
Shield gas, carries out melting to zirconium niobium intermediate alloy, and melt back 7 times is uniform to guarantee zirconium niobium intermediate alloy composition;
(2) preparation of titanium zirconium aluminum niobium alloy:Take above-mentioned zirconium niobium intermediate alloy 24.667g, titanium sponge 63.1945g and fine aluminium
6.108g, zirconium niobium intermediate alloy is put in the cold-crucible of vacuum non-consumable arc furnace with Titanium and metallic aluminium and is melted
Refining, by vacuum in furnace chamber 8.5 × 10 are evacuated to-3Pa, is then filled with high-purity argon gas as protective gas, first in the electric current of 170A
Lower is liquid alloy solution by raw material melting, then melting 2 minutes under the electric current of 210A, then using under the electric current of 290A
Melting 3 minutes;The pressure of water jacketed copper crucible cooling water is adjusted in the range of 1.3bar, the stream of water jacketed copper crucible cooling water is adjusted
Dynamic speed is 0.5m/s, reaches the cooling capacity of adjustment water jacketed copper crucible, realizes that alloy melt solidification cooling rate is controlled 325
DEG C/min, melt back 7 times, it is ensured that the composition of titanium zirconium aluminum niobium alloy ingot casting is uniform.
The as cast condition titanium zirconium aluminum niobium alloy prepared is cut into into shape as shown in Figure 1 with wire cutting, tension test is carried out, thus
Obtain its mechanical property related data;Uniaxial tensile test is carried out using the universal testing machine of model Instron5982
(band extensometer), rate of extension is set as 5 × 10-4s-1, its mechanical experimental results as shown in table 1, its trus stress-very should
In varied curve such as Fig. 3 shown in the curve of embodiment 2, the maximum tensile strength is 1068MPa;
Embodiment 3
(1) intermediate alloy is prepared:First take technical grade sponge zirconium 27.5741g and pure niobium 6.6729g, by above-mentioned metal zirconium with
After metal niobium is clean and dry, vacuum non-consumable smelting furnace (DHL-400 types, Chinese Academy of Sciences Shenyang instrument development center are put into
Company limited) in water jacketed copper crucible in, copper crucible inwall is cleared up in advance and clean with alcohol wipe, it is to avoid introduce other
Impurity;In fusion process, vacuum in furnace chamber is evacuated to into 8.5 × 10 using vacuum system-3Pa, is then filled with high-purity argon gas conduct
Protective gas, carries out melting to zirconium niobium intermediate alloy, and melt back 8 times is uniform to guarantee zirconium niobium intermediate alloy composition;
(2) preparation of titanium zirconium aluminum niobium alloy:Take above-mentioned zirconium niobium intermediate alloy 34.247, titanium sponge 52.1518g and fine aluminium
5.5148g, zirconium niobium intermediate alloy is put in the cold-crucible of vacuum non-consumable arc furnace with Titanium and metallic aluminium and is melted
Refining, by vacuum in furnace chamber 8.5 × 10 are evacuated to-3Pa, is then filled with high-purity argon gas as protective gas, first in the electric current of 180A
Lower is liquid alloy solution by raw material melting, then melting 3 minutes under the electric current of 220A, then using under the electric current of 290A
Melting 4 minutes;The pressure of water jacketed copper crucible cooling water is adjusted in the range of 1.6bar, the stream of water jacketed copper crucible cooling water is adjusted
Dynamic speed is 0.6m/s, reaches the cooling capacity of adjustment water jacketed copper crucible, realizes that alloy melt solidification cooling rate is controlled 350
DEG C/min, melt back 8 times, it is ensured that the composition of titanium zirconium aluminum niobium alloy ingot casting is uniform.
The as cast condition titanium zirconium aluminum niobium alloy prepared is cut into into shape as shown in Figure 1 with wire cutting, tension test is carried out, thus
Obtain its mechanical property related data;Uniaxial tensile test is carried out using the universal testing machine of model Instron5982
(band extensometer), rate of extension is set as 5 × 10-4s-1, its mechanical experimental results is as shown in table 1;Its trus stress-very should
In varied curve such as Fig. 3 shown in the curve of embodiment 3, the maximum tensile strength is 1378MPa;
Embodiment 4
(1) intermediate alloy is prepared:Technical grade sponge zirconium 37.2519g and pure niobium 6.7054g is taken, by above-mentioned metal zirconium and gold
After category niobium is clean and dry, (DHL-400 types, Chinese Academy of Sciences Shenyang instrument development center have to be put into vacuum non-consumable smelting furnace
Limit company) in water jacketed copper crucible in, copper crucible inwall is cleared up in advance and clean with alcohol wipe, it is to avoid introduce other miscellaneous
Matter;In fusion process, vacuum in furnace chamber is evacuated to into 8.5 × 10 using vacuum system-3Pa, is then filled with high-purity argon gas as guarantor
Shield gas, carries out melting to zirconium niobium intermediate alloy, and melt back 7 times is uniform to guarantee zirconium niobium intermediate alloy composition;
(2) preparation of titanium zirconium aluminum niobium system alloy:Take zirconium niobium intermediate alloy 43.9573g, titanium sponge 43.5847g and fine aluminium
5.5878g, zirconium niobium intermediate alloy is put in the cold-crucible of vacuum non-consumable arc furnace with Titanium and metallic aluminium and is melted
Refining, by vacuum in furnace chamber 8.5 × 10 are evacuated to-3Pa, is then filled with high-purity argon gas as protective gas, first in the electric current of 190A
Lower is liquid alloy solution by raw material melting, then melting 3 minutes under the electric current of 240A, then using under the electric current of 300A
Melting 5 minutes;The pressure of water jacketed copper crucible cooling water is adjusted in the range of 1.8bar, the stream of water jacketed copper crucible cooling water is adjusted
Dynamic speed is 0.6m/s, reaches the cooling capacity of adjustment water jacketed copper crucible, realizes that alloy melt solidification cooling rate is controlled 400
DEG C/min, melt back 7 times, it is ensured that the composition of titanium zirconium aluminum niobium alloy ingot casting is uniform.
The as cast condition titanium zirconium aluminum niobium alloy prepared is cut into into shape as shown in Figure 1 with wire cutting, tension test is carried out, thus
Obtain its mechanical property related data;Uniaxial tensile test is carried out using the universal testing machine of model Instron5982
(band extensometer), rate of extension is set as 5 × 10-4s-1, its mechanical experimental results is as shown in table 1;Meanwhile, using metallographic
Test pointing machine (XQ-1, Shanghai metallographic plant equipment company limited) prepares metallographic specimen, by tested face sand paper after taking-up
It is polishing to be polished post-etching after 3000#, under metallurgical microscope (Axiovert 200MAT, Germany) its tissue shape is observed
Looks, as shown in Figure 2.By the analysis to Fig. 2, it is found that the titanium zirconium aluminum niobium alloy for preparing tissue is by tiny α phases lath and waits
Axialite is constituted.Illustrate by the electric current and water jacketed copper crucible cooling water pressure in adjustment fusion process, it is possible to obtain tiny
As-cast structure.In its true stress-true strain curve such as Fig. 3 shown in the curve of embodiment 4, the maximum tensile strength is 1490MPa.
Table 1 is by forging in as cast condition fine grain high strength titanium zirconium aluminum niobium alloy prepared by embodiment 1,2,3,4 and documents 1
Make the comparison of the titanium aluminum niobium alloy mechanical property of working hardening
Table 1
Note:The literature reference of comparative alloy
1. Wang Weimin, Luo Binli. Srgery grafting Ti6Al7Nb and Ti13Nb13Zr alloy structures and performance. China YouSe
Acta Metallurgica Sinica .2013,23 (1) p:336-342.
Claims (3)
1. a kind of as cast condition fine grain high strength titanium zirconium aluminum niobium alloy, it is characterised in that:Its chemical composition mass percent wt% is
Zr:10~40, Al:5.6~6.5, Nb:6.25~7.26, Ti:46.8~77.4, other are inevitable impurity.
2. as cast condition fine grain high strength titanium zirconium aluminum niobium alloy according to claim 1, it is characterised in that:Described various composition
Raw material be respectively technical grade sponge zirconium and titanium sponge and fine aluminium and pure niobium.
3. the preparation method of the as cast condition fine grain high strength titanium zirconium aluminum niobium alloy of claim 1, it is characterised in that:
(1) preparation of intermediate alloy:After metal zirconium and metal niobium cleaning and drying, the water being put in vacuum non-consumable smelting furnace
In cold copper crucible, copper crucible inwall is cleared up in advance and clean with alcohol wipe, it is to avoid introduce other impurities, fusion process
In, vacuum in furnace chamber is evacuated to into 8.5 × 10 using vacuum system-3Pa, is then filled with high-purity argon gas as protective gas, to zirconium
Niobium intermediate alloy carries out conventional melting, and at least melt back 6 times is uniform to guarantee zirconium niobium intermediate alloy composition;
(2) preparation of titanium zirconium aluminum niobium alloy:The zirconium niobium intermediate alloy of step (1) and Titanium and metallic aluminium are put into into vacuum non-certainly
Melting is carried out in the cold-crucible of consumption electric arc furnace, the process of melting is that vacuum in furnace chamber is evacuated to into 8.5 × 10-3Pa, connects
And be filled with high-purity argon gas as protective gas, melting is carried out to titanium zirconium aluminum niobium alloy;
1. first under the electric current of 160~190A by raw material melting be liquid alloy solution, then under the electric current of 200~240A
Melting 2~3 minutes, then using melting 3~5 minutes under the electric current of 280~300A;
2. in the range of 1~1.8bar adjust water jacketed copper crucible cooling water pressure, by change cooling water pressure can between
The flowing velocity for connecing adjustment water jacketed copper crucible cooling water is 0.4~0.6m/s, reaches the cooling capacity of adjustment water jacketed copper crucible, real
The control of existing alloy melt solidification cooling rate reaches 300~400 DEG C/min;
3. when titanium zirconium aluminum niobium alloy is cast in melting, melt back more than 6 times are at least wanted, it is ensured that the composition of titanium zirconium aluminum niobium alloy ingot casting
Uniformly.
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CN111218582A (en) * | 2020-02-27 | 2020-06-02 | 北京理工大学 | Titanium alloy with large-opening effect for shaped charge liner |
CN111575572A (en) * | 2020-05-29 | 2020-08-25 | 中国科学院金属研究所 | B-doped TiZrNb multi-principal-element alloy and preparation method thereof |
CN111809081A (en) * | 2020-07-23 | 2020-10-23 | 河北科技师范学院 | High-strength and high-plasticity ZrTiAlNb zirconium-based alloy and preparation method thereof |
CN112226647A (en) * | 2020-10-23 | 2021-01-15 | 河北工业大学 | High-strength-toughness corrosion-resistant zirconium-titanium-vanadium alloy and preparation method thereof |
CN115627387A (en) * | 2022-11-09 | 2023-01-20 | 沈阳航空航天大学 | High-strength TiZr-based alloy and preparation method thereof |
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CN111575572A (en) * | 2020-05-29 | 2020-08-25 | 中国科学院金属研究所 | B-doped TiZrNb multi-principal-element alloy and preparation method thereof |
CN111575572B (en) * | 2020-05-29 | 2021-05-18 | 中国科学院金属研究所 | B-doped TiZrNb multi-principal-element alloy and preparation method thereof |
CN111809081A (en) * | 2020-07-23 | 2020-10-23 | 河北科技师范学院 | High-strength and high-plasticity ZrTiAlNb zirconium-based alloy and preparation method thereof |
CN111809081B (en) * | 2020-07-23 | 2021-10-29 | 河北科技师范学院 | High-strength and high-plasticity ZrTiAlNb zirconium titanium-based alloy and preparation method thereof |
CN112226647A (en) * | 2020-10-23 | 2021-01-15 | 河北工业大学 | High-strength-toughness corrosion-resistant zirconium-titanium-vanadium alloy and preparation method thereof |
CN115627387A (en) * | 2022-11-09 | 2023-01-20 | 沈阳航空航天大学 | High-strength TiZr-based alloy and preparation method thereof |
CN115627387B (en) * | 2022-11-09 | 2023-11-10 | 沈阳航空航天大学 | High-strength TiZr-based alloy and preparation method thereof |
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