CN104120325B - Low thermal expansion coefficient NaMxAlySiz high entropy alloy and preparation method thereof - Google Patents
Low thermal expansion coefficient NaMxAlySiz high entropy alloy and preparation method thereof Download PDFInfo
- Publication number
- CN104120325B CN104120325B CN201410319113.8A CN201410319113A CN104120325B CN 104120325 B CN104120325 B CN 104120325B CN 201410319113 A CN201410319113 A CN 201410319113A CN 104120325 B CN104120325 B CN 104120325B
- Authority
- CN
- China
- Prior art keywords
- alloy
- ingot
- prealloy
- expansion
- crucible
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Abstract
The invention relates to a low thermal expansion coefficient NaMxAlySiz high entropy alloy and a preparation method thereof, the chemical components of the alloy are as follows: 75 <= a <= 100%, 0 <= x <= 10%, 0<= y<= 10%, 0<= z<= 5%, N is arbitrary three or more than three of Ta, Nb, Hf, Zr, Ti, Mo and W, and M is any one or more than one of V, Mn, Fe, Co, Ni and Cr. The alloy phase structure is as follows: a body centered cubic solid solution and an intermetallic compound. The alloy is prepared by arc melting method in three stages. The NaMxAlySiz high entropy alloy has a low thermal expansion coefficient at the temperature in the range of room temperature to 1000 DEG C, the change rate is less than 20%, and the alloy has a broad application prospect in the high temperature industrial field.
Description
Technical field
The invention belongs to high-temperature alloy material field is and in particular to a kind of low thermal coefficient of expansion namxalysizHigh-entropy alloy
And preparation method thereof.
Background technology
The expansion principle of metal and its alloy is the raw anharmonic vibration of lattice-site paroxysm, and the composition by material,
The impact of structure and phase transformation etc..Expansion characteristics linear expansion coefficient or the coefficient of volume expansion represent.Common metal be heated after with temperature
Degree raises the coefficient of volume expansion and almost ramps, within the temperature range of 20-800 DEG C, the linear expansion coefficient α of ordinary metallic material
It is about 10-20 × 10-6/ DEG C.French physician c.e.guialme in 1896 finds when studying 36ni-fe alloy, its
(α is about 1. 2 × 10 to have very little thermal coefficient of expansion near room temperature-6/ DEG C), this alloy is referred to as low-expansion alloy.Boat
The fast development of empty cause and the outburst of energy crisis, cause jumping up of fuel price, have promoted commercial low bulk
The appearance of high temperature alloy.The high temperature alloy of low expansion character can strictly control the gap between engine rotation part and stationary parts
And tolerance, greatly improve energy output and fuel efficiency, be widely used in aerospace field.As certain electromotor outer shroud, by
Other alloys are changed to ni-fe-co system low expansion superalloy, only use this part instead, and oil consumption rate just have dropped about 2%.This
Outward, aerospace field also commonly uses the ceramic material of high temperature resistance, with the connection with more low-expansion ceramic material
Low expansion superalloy need to be used.
For meeting required various low-expansion alloy under different temperatures, people have developed large quantities of low bulks or fixed expansion is closed
Gold, from earliest commercial low bulk fe-ni alloy to ni-co-fe series low-expansion alloy again to the in738 being recently developed etc..
But, the deficiency of three aspects of these low-expansion alloy presence at present:
1) thermal expansion rates are not little
2) because the heat stability of microstructure is not enough, the coefficient of expansion improves with temperature and increases too fast
3) because fusing point is not high, service temperature is too low
Due to above reason, it is unfavorable for controlling between engine rotation part and stationary parts using existing low-expansion alloy
Gap and tolerance.Further, since the use temperature of conventional Lo-Ex close to its fusion temperature it is impossible to meet
Inlet temperature before higher turbine, hinders raising engine fuel efficiency further.Therefore research and development can be used for high temperature, larger
Temperature range can keep more low-expansion novel alloy to become the recent studies on direction in this field.
Content of the invention
The use temperature that present invention is directed to current high temperature low-expansion alloy presence is limited, and expansion rate is larger, and swollen
The shortcomings of swollen curve is precipitous is it is proposed that a kind of low-thermal-expansion namxalysizHigh-entropy alloy, alloy and preparation method thereof.
The technical scheme is that: a kind of low thermal coefficient of expansion namxalysizHigh-entropy alloy, the atom hundred of this alloying component
Dividing than expression formula is namxalysiZ,Wherein, 75≤a ＜ 100 at%, 0≤x≤10 at %, 0≤y≤10 at %, 0≤z
≤5at %.
Further, described n is 99% for purity tantalum ta, niobium nb, hafnium hf, zirconium zr, titanium ti, three kinds in molybdenum mo, tungsten w with
On.
Further, one of described m is 99% for purity vanadium v, manganese mn, ferrum fe, cobalt co, nickel ni, chromium cr element or many
Kind.
In alloy, the effect of essential element: n is high-melting point alloy element, is also to promote to form body-centered cubic structure simultaneously
Element；The interpolation of si can form siliceous oxide on surface, puies forward heavy alloyed non-oxidizability, promote shape between crystal boundary simultaneously
Become silicide；The aluminium oxide that the interpolation surface of al forms densification puies forward heavy alloyed non-oxidizability.
The hot expansibility of alloy, in addition to the composition influence by alloy, is also affected by the organizational structure of alloy.This
Bright low heat expansion alloy adopts vacuum arc melting furnace melting, direct pouring molding, and technique is very simple.
It is a further object of the present invention to provide above-mentioned low thermal coefficient of expansion namxalysizThe preparation method of high-entropy alloy, bag
Include following steps:
Step 1: first the atomic percent expression formula of design alloying component is namxalysiZ,The atom of raw material after determining again
Percentage ratio is converted into mass ratio and weighs each raw material respectively；
Step 2: in the range of the n that step 1 is weighed, two kinds of metals of raw metal are one group of addition vacuum arc melting furnace,
It is placed in crucible and the angle horizontal by 20 ° -40 °, melt back 2 times, obtain the prealloy ingot of two kinds of metals, then by institute
The prealloy ingot having two kinds of metals melts together, obtains the prealloy ingot containing n；
Step 3: the prealloy ingot containing n that in the range of the m that step 1 is weighed, raw metal and step 2 obtain together is put
Enter vacuum melting furnace, will the initial alloy ingot that be formed after fusing, be placed in crucible and horizontal by 20 ° -40 ° angle repeatedly
Melting 3 times, obtains prealloy ingot；
Step 4: si and al that weigh step 1 and step 3 obtain prealloy ingot and together put into vacuum melting furnace, will melt
The initial alloy ingot being formed after change, is placed in crucible and the angle melt back 5 times horizontal by 20 ° -40 °, smelting and pouring
Become alloy pig, this alloy pig average coefficient of linear expansion between room temperature is to 1000 DEG C is not more than 12 × 10-6/ DEG C, and thermal expansion system
Number rate of change is less than 20%, and this alloy is mainly body center cubic solid solution and a small amount of intermetallic compound for structure.
The low-thermal-expansion n that the preparation method of the present invention is madeamxalysizHigh-entropy alloy is average between room temperature is to 1000 DEG C
Linear expansion coefficient is not more than 12 × 10-6/DEG C, thermal coefficient of expansion rate of change is less than 20%.The low bulk high-entropy alloy of the present invention is suitable
It is applied to the part working under hot conditionss.
The present invention is compared with prior art had an advantage in that
(1) alloy melting point of the present invention is higher than 1600 DEG C, and more existing low-expansion alloy at least improves 300 DEG C using temperature；
(2) with existing low expansion superalloy, the thermal coefficient of expansion of alloy of the present invention reduces 3-10 × 10-6/DEG C model
Enclose, and thermal coefficient of expansion rate of change reduces 10%-20%.
(3) by the xrd spectral line in the range of 50 DEG C -1000 DEG C of thermal dilatometry and Fig. 9 embodiment 2 of Fig. 8 embodiment 2
Find out, in temperature-rise period, alloy structure does not undergo phase transition, alloy of the present invention is described, and microstructure is highly stable at high temperature.
Specific embodiment
Below in conjunction with embodiment, the present invention is described in further detail.
Embodiment 1
1. alloying component
The alloying component of embodiment 1 is ta5nb17.5hf17.5zr17.5ti17.5mo5w5al10si5.
2. the melting of alloy
The melting of alloy comprises the following steps:
Step 1: design alloying component atomic percent expression formula be
ta5nb17.5hf17.5zr17.5ti17.5mo5w5al10si5, then the atomic percent of raw material is converted into mass ratio and claims respectively after determining
Take each raw material；
Step 2: mo, ti are set to one group, w, hf are set to one group, ta, nb, zr are set to one group, are separately added into vacuum electric
Arc smelting furnace, is placed in crucible and the angle horizontal by 20 ° -40 °, melt back 2 times, obtains the prealloy of two kinds of metals
Ingot, then the prealloy ingot of all two kinds of metals is melted together, obtain the prealloy ingot containing n；
Step 3: si, the al that weigh step 1 and step 2 obtain prealloy ingot and together put into vacuum melting furnace, will melt
The initial alloy ingot being formed after change, is placed in crucible and the angle melt back 5 times horizontal by 20 ° -40 °, smelting and pouring
Become alloy pig.
3. the tissue signature of alloy
Prepared by tissue topography's figure of the as cast condition of Fig. 1 embodiment 1 and the as cast condition xrd figure of Fig. 2 embodiment 1 can be seen that
The alloy microstructure of embodiment, wherein dendrite are body center cubic solid solution, and intercrystalline is distributed intermetallic compound on a small quantity.
Embodiment 2
1. alloying component
The alloying component of embodiment 2 is ta10nb19hf5zr5ti7mo8w35v10si1.
2. the melting of alloy
The melting of alloy comprises the following steps:
Step 1: the atomic percent expression formula of design alloying component is ta10nb19hf5zr5ti7mo8w35v10si1, then will
After determination, the atomic percent of raw material is converted into mass ratio and weighs each raw material respectively；
Step 2: mo, ti are set to one group, w, hf are set to one group, ta, nb, zr are set to one group, are separately added into vacuum electric
Arc smelting furnace, is placed in crucible and the angle horizontal by 20 ° -40 °, melt back 2 times, obtains the prealloy of two kinds of metals
Ingot, then the prealloy ingot of all two kinds of metals is melted together, obtain the prealloy ingot containing n；
Step 3: vacuum melting furnace together put into by the prealloy ingot containing n that the v that step 1 is weighed is obtained with step 2, will
The initial alloy ingot being formed after fusing, is placed in crucible and the angle melt back 3 times horizontal by 20 ° -40 °, obtains pre-
Alloy pig；
Step 4: si, the al that weigh step 1 and step 3 obtain prealloy ingot and together put into vacuum melting furnace, will melt
The initial alloy ingot being formed after change, is placed in crucible and the angle melt back 5 times horizontal by 20 ° -40 °, smelting and pouring
Become alloy pig.
3. the tissue signature of alloy
The alloy microstructure of prepared embodiment be can be seen that by tissue topography's figure of Fig. 3 embodiment alloy 2 as cast condition,
Wherein dendrite is body center cubic solid solution, and intercrystalline is distributed intermetallic compound on a small quantity.Fig. 8,9 can be seen that alloy of the present invention is high
The lower microstructure of temperature is highly stable.
Embodiment 3
1. alloying component
The alloying component of embodiment 3 is ta8nb5hf35zr12ti5mo15w15co1al1si3.
2. the melting of alloy
The melting of alloy comprises the following steps:
Step 1: the atomic percent expression formula of design alloying component is ta8nb5hf35zr12ti5mo15w15co1al1si3, then
After determining, the atomic percent of raw material is converted into mass ratio and weighs each raw material respectively；
Step 2: mo, ti are set to one group, w, hf are set to one group, ta, nb, zr are set to one group, are separately added into vacuum electric
Arc smelting furnace, is placed in crucible and the angle horizontal by 20 ° -40 °, melt back 2 times, obtains the prealloy of two kinds of metals
Ingot, then the prealloy ingot of all two kinds of metals is melted together, obtain the prealloy ingot containing n；
Step 3: the prealloy ingot containing n that the co that step 1 is weighed is obtained with step 2 together puts into vacuum melting furnace,
Will the initial alloy ingot that be formed after fusing, be placed in crucible and the angle melt back 3 times horizontal by 20 ° -40 °, obtain
Prealloy ingot；
Step 4: si, the al that weigh step 1 and step 3 obtain prealloy ingot and together put into vacuum melting furnace, will melt
The initial alloy ingot being formed after change, is placed in crucible and the angle melt back 5 times horizontal by 20 ° -40 °, smelting and pouring
Become alloy pig.
3. the tissue signature of alloy
The alloy microstructure of prepared embodiment be can be seen that by tissue topography's figure of Fig. 4 embodiment alloy 3 as cast condition,
Wherein dendrite is body center cubic solid solution, and intercrystalline is distributed intermetallic compound on a small quantity.
Embodiment 4
1. alloying component
The alloying component of embodiment 4 is ta35nb5.2hf5.2zr5.2ti5.2mo35w5.2fe2si2.
2. the melting of alloy
The melting of alloy comprises the following steps:
Step 1: design alloying component atomic percent expression formula be
ta35nb5.2hf5.2zr5.2ti5.2mo35w5.2fe2si2, then the atomic percent of raw material is converted into mass ratio and claims respectively after determining
Take each raw material；
Step 2: mo, ti are set to one group, w, hf are set to one group, ta, nb, zr are set to one group, are separately added into vacuum electric
Arc smelting furnace, is placed in crucible and the angle horizontal by 20 ° -40 °, melt back 2 times, obtains the prealloy of two kinds of metals
Ingot, then the prealloy ingot of all two kinds of metals is melted together, obtain the prealloy ingot containing n；
Step 3: the prealloy ingot containing n that the fe that step 1 is weighed is obtained with step 2 together puts into vacuum melting furnace,
Will the initial alloy ingot that be formed after fusing, be placed in crucible and the angle melt back 3 times horizontal by 20 ° -40 °, obtain
Prealloy ingot；
Step 4: the si step 3 that step 1 is weighed obtains prealloy ingot and together puts into vacuum melting furnace, shape after melting
The initial alloy ingot becoming, is placed in crucible and the angle melt back 5 times horizontal by 20 ° -40 °, smelting and pouring becomes alloy
Ingot.
3. the tissue signature of alloy
The alloy microstructure of prepared embodiment be can be seen that by tissue topography's figure of Fig. 5 embodiment alloy 4 as cast condition,
Wherein dendrite is body center cubic solid solution, and intercrystalline is distributed intermetallic compound on a small quantity.
Embodiment 5
1. alloying component
The alloying component of embodiment 5 is ta8nb11hf15zr35ti15mo15w15al4ni2.
2. the melting of alloy
The melting of alloy comprises the following steps:
Step 1: the atomic percent expression formula of design alloying component is ta8nb11hf15zr35ti15mo15w15al4ni2, then
After determining, the atomic percent of raw material is converted into mass ratio and weighs each raw material respectively；
Step 2: mo, ti are set to one group, w, hf are set to one group, ta, nb, zr are set to one group, are separately added into vacuum electric
Arc smelting furnace, is placed in crucible and the angle horizontal by 20 ° -40 °, melt back 2 times, obtains the prealloy of two kinds of metals
Ingot, then the prealloy ingot of all two kinds of metals is melted together, obtain the prealloy ingot containing n；
Step 3: the prealloy ingot containing n that the ni that step 1 is weighed is obtained with step 2 together puts into vacuum melting furnace,
Will the initial alloy ingot that be formed after fusing, be placed in crucible and the angle melt back 3 times horizontal by 20 ° -40 °, obtain
Prealloy ingot；
Step 4: the si step 3 that step 1 is weighed obtains prealloy ingot and together puts into vacuum melting furnace, shape after melting
The initial alloy ingot becoming, is placed in crucible and the angle melt back 5 times horizontal by 20 ° -40 °, smelting and pouring becomes alloy
Ingot.
3. the tissue signature of alloy
By tissue topography's figure of Fig. 6 embodiment 5 it can be seen that the phase structure of alloy of prepared embodiment is: body-centered cubic is solid
Solution.
Implement to grin 6
1. alloying component
The alloying component of embodiment 2 is ta8nb35hf10zr10ti10mo10w10al4cr1si2.
2. the melting of alloy
The melting of alloy comprises the following steps:
Step 1: the atomic percent expression formula of design alloying component is ta8nb35hf10zr10ti10mo10w10al4cr1
si2, then the atomic percent of raw material is converted into mass ratio and weighs each raw material respectively after determining；
Step 2: mo, ti are set to one group, w, hf are set to one group, ta, nb, zr are set to one group, are separately added into vacuum electric
Arc smelting furnace, is placed in crucible and the angle horizontal by 20 ° -40 °, melt back 2 times, obtains the prealloy of two kinds of metals
Ingot, then the prealloy ingot of all two kinds of metals is melted together, obtain the prealloy ingot containing n；
Step 3: the prealloy ingot containing n that the cr that step 1 is weighed is obtained with step 2 together puts into vacuum melting furnace,
Will the initial alloy ingot that be formed after fusing, be placed in crucible and the angle melt back 3 times horizontal by 20 ° -40 °, obtain
Prealloy ingot；
Step 4: al, si step 3 that step 1 is weighed obtains prealloy ingot and together puts into vacuum melting furnace, will melt
The initial alloy ingot being formed afterwards, is placed in crucible and the angle melt back 5 times horizontal by 20 ° -40 °, smelting and pouring becomes
Alloy pig.
3. the tissue signature of alloy
Can be seen that the phase structure of alloy of prepared embodiment is: body-centered cubic by tissue topography's figure of Fig. 7 embodiment 6
Solid solution and a small amount of intermetallic compound.
7th, the hot expansibility of alloy of the present invention
The hot expansibility of alloy of the present invention is as shown in table 1:
The hot expansibility of table 1 alloy of the present invention
In sum, alloy of the present invention has high applicable temperature range, and thermal coefficient of expansion is not only low but also thermal expansion
Process is slow, stable.
Claims (1)
1. a kind of low thermal coefficient of expansion namxalysizThe preparation method of high-entropy alloy is it is characterised in that the atom of this alloying component
Percentage expression formula is namxalysiZ,Wherein, 75≤a ＜ 100 at%, 0≤x≤10 at %, 0≤y≤10 at %, 0
Tantalum ta that≤z≤5at %, described n are 99% for purity, niobium nb, hafnium hf, zirconium zr, titanium ti, more than three kinds in molybdenum mo, tungsten w, institute
State one or more of the vanadium v that m is 99%, manganese mn, ferrum fe, cobalt co, nickel ni, chromium cr element it is characterised in that including following
Step:
Step 1: first the atomic percent expression formula of design alloying component is namxalysiZ,The atomic percent of raw material after determining again
Weigh each raw material than being converted into mass ratio respectively；
Step 2: in the range of the n that step 1 is weighed, two kinds of metals of raw metal are one group of addition vacuum arc melting furnace, are placed in
Angle in crucible and horizontal by 20 ° -40 °, melt back 2 times, obtain the prealloy ingot of two kinds of metals, then by all two
The prealloy ingot planting metal melts together, obtains the prealloy ingot containing n；
Step 3: the prealloy ingot containing n that in the range of the m that step 1 is weighed, raw metal and step 2 obtain together is put into very
Empty smelting furnace, will the initial alloy ingot that be formed after fusing, be placed in crucible and the angle melt back horizontal by 20 ° -40 °
3 times, obtain prealloy ingot；
Step 4: si and al that weigh step 1 and step 3 obtain prealloy ingot and together put into vacuum melting furnace, after melting
The initial alloy ingot being formed, is placed in crucible and the angle melt back 5 times horizontal by 20 ° -40 °, smelting and pouring becomes to close
Ingot, this alloy pig average coefficient of linear expansion between room temperature is to 1000 DEG C is not more than 12 × 10-6/ DEG C, and thermal coefficient of expansion change
Rate is less than 20%, and this alloy is mainly body center cubic solid solution and a small amount of intermetallic compound for structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410319113.8A CN104120325B (en) | 2014-07-04 | 2014-07-04 | Low thermal expansion coefficient NaMxAlySiz high entropy alloy and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410319113.8A CN104120325B (en) | 2014-07-04 | 2014-07-04 | Low thermal expansion coefficient NaMxAlySiz high entropy alloy and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104120325A CN104120325A (en) | 2014-10-29 |
| CN104120325B true CN104120325B (en) | 2017-01-18 |
Family
ID=51765953
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410319113.8A Active CN104120325B (en) | 2014-07-04 | 2014-07-04 | Low thermal expansion coefficient NaMxAlySiz high entropy alloy and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104120325B (en) |
Families Citing this family (46)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104674103B (en) * | 2015-03-10 | 2017-01-04 | 西北工业大学 | A kind of CrFeCoNiNbx high-entropy alloy and preparation method thereof |
| CN105112759B (en) * | 2015-08-12 | 2017-07-14 | 太原理工大学 | Resistant to elevated temperatures high entropy alloy material and preparation method thereof |
| CN105296836B (en) * | 2015-11-17 | 2017-12-08 | 北京科技大学 | A kind of N with SMExMyHigh-entropy alloy and preparation method thereof |
| CN105603287A (en) * | 2016-02-19 | 2016-05-25 | 中原工学院 | Oxide-based high-entropy alloy ceramic binding agent special for PCBN |
| CN105734312B (en) * | 2016-03-10 | 2017-12-22 | 北京科技大学 | A kind of bio-medical TiZrNbTa systems high-entropy alloy and preparation method thereof |
| CN107488803A (en) * | 2016-06-12 | 2017-12-19 | 中国科学院金属研究所 | Magnesium-yttrium-transition metal high-entropy alloy before a kind of bio-medical |
| CN105862036A (en) * | 2016-06-25 | 2016-08-17 | 芜湖三刀材料科技有限公司 | High-entropy coating for surface of iron substrate and preparation method of high-entropy coating |
| CN105950943A (en) * | 2016-06-25 | 2016-09-21 | 芜湖三刀材料科技有限公司 | Multi-major-element high-entropy alloy and preparation method thereof |
| CN106048371A (en) * | 2016-06-25 | 2016-10-26 | 芜湖三刀材料科技有限公司 | High-entropy alloy and preparation method |
| CN106244887A (en) * | 2016-07-29 | 2016-12-21 | 昆明理工大学 | A kind of high entropy alloy material and cladding layer preparation method |
| CN106319260B (en) * | 2016-09-21 | 2017-11-03 | 北京科技大学 | A kind of high-melting-point high-entropy alloy and its coating production |
| CN107419154B (en) * | 2017-07-24 | 2019-02-15 | 北京科技大学 | One kind having hyperelastic TiZrHfNbAl high-entropy alloy and preparation method thereof |
| CN107475596B (en) * | 2017-08-10 | 2020-02-11 | 哈尔滨工业大学 | High-entropy intermetallic compound |
| CN107641751B (en) * | 2017-08-25 | 2019-08-16 | 中国科学院金属研究所 | A kind of MoNbCrVTi infusibility high-entropy alloy and preparation method thereof |
| CN108103495B (en) * | 2017-12-12 | 2020-08-25 | 贵州交通职业技术学院 | High-temperature-resistant high-entropy alloy tool steel coating material and preparation method of coating |
| CN108220742B (en) * | 2018-03-14 | 2022-10-18 | 北京中辰至刚科技有限公司 | Microalloyed Ti-Zr-Hf-V-Nb-Ta refractory high-entropy alloy and preparation method thereof |
| KR102102520B1 (en) * | 2018-03-16 | 2020-04-20 | 서울대학교산학협력단 | Complex concentrated refractory metal-silicide composite with high strength and ductility and manufacturing method for the same |
| CN108517469B (en) * | 2018-05-11 | 2020-04-28 | 南京理工大学 | (Hf, Ta) Fe with wide temperature zone zero thermal expansion effect2Magnetic phase change alloy and application thereof |
| CN108677157B (en) * | 2018-05-31 | 2020-09-08 | 南京工程学院 | Preparation method of high-entropy alloy film with high-hardness and high-resistivity characteristics |
| CN110777278B (en) * | 2018-07-31 | 2021-07-20 | 哈尔滨工业大学 | Ultrahigh-temperature composite material based on refractory high-entropy alloy and preparation method thereof |
| CN109023002B (en) * | 2018-08-15 | 2020-04-17 | 北京理工大学 | Silicon solid solution reinforced VNbMoTaSi high-entropy alloy and preparation method thereof |
| CN109457164B (en) * | 2018-12-21 | 2020-11-03 | 昆明理工大学 | AlNbMoVTi high-entropy alloy powder and application thereof |
| CN109487099A (en) * | 2019-01-18 | 2019-03-19 | 湘潭大学 | A kind of CrVTaHfZrTi high-entropy alloy and preparation method thereof |
| CN112831710B (en) * | 2019-11-22 | 2022-03-11 | 长沙理工大学 | Superhard wear-resistant high-entropy alloy and preparation method thereof |
| CN112831709B (en) * | 2019-11-22 | 2022-03-11 | 长沙理工大学 | High-hardness refractory high-entropy alloy and preparation method thereof |
| CN110904377B (en) * | 2019-12-09 | 2021-03-26 | 中南大学 | Refractory high-entropy alloy powder and preparation method thereof |
| CN110923539B (en) * | 2019-12-17 | 2021-10-08 | 南方科技大学 | High-entropy alloy, preparation method thereof and compression performance testing method |
| CN111004958B (en) * | 2020-01-07 | 2021-03-16 | 北京科技大学 | Preparation method of Al-Si-Mn-Fe-Ga high-entropy ten-order quasicrystal |
| CN111118379B (en) * | 2020-01-15 | 2023-06-20 | 福建工程学院 | Co-bonded TiZrNbMoTa refractory high-entropy alloy and preparation method thereof |
| TWI760107B (en) * | 2020-02-12 | 2022-04-01 | 國立成功大學 | High-entropy alloy and probe application thereof |
| EP4166683A1 (en) * | 2020-06-10 | 2023-04-19 | Osaka University | Multicomponent system alloy |
| CN112030055A (en) * | 2020-09-10 | 2020-12-04 | 燕山大学 | CrNbTiVZrSi high-entropy alloy and preparation method thereof |
| CN114507801B (en) * | 2020-11-16 | 2022-11-11 | 中国科学院上海硅酸盐研究所 | Low-density and high-hardness high-entropy alloy material and preparation method thereof |
| CN112609118B (en) * | 2020-11-30 | 2022-01-18 | 大连理工大学 | High-temperature-resistant refractory high-entropy alloy and preparation method thereof |
| CN113046614A (en) * | 2021-03-08 | 2021-06-29 | 西南交通大学 | NbMoHfTiZrAlSi refractory high-entropy alloy and preparation method thereof |
| CN113528919A (en) * | 2021-03-31 | 2021-10-22 | 合肥工业大学 | Ti-V-Cr-W series refractory high-entropy alloy with excellent mechanical property and preparation method thereof |
| CN113149646B (en) * | 2021-04-22 | 2022-07-12 | 河南大学 | High-entropy low-thermal-expansion ceramic material and sintering synthesis method thereof |
| CN113667875B (en) * | 2021-07-28 | 2022-07-12 | 中国科学院金属研究所 | MoNbTaTiVSix high-entropy alloy and preparation method thereof |
| CN115386774B (en) * | 2021-09-30 | 2023-10-13 | 北京理工大学 | Refractory high-entropy alloy with high strength and high uniform elongation and preparation method thereof |
| CN115233041B (en) * | 2021-12-20 | 2023-06-16 | 北京科技大学 | Low-expansion alloy with tensile plasticity and preparation method thereof |
| CN114351030A (en) * | 2022-01-17 | 2022-04-15 | 大连理工大学 | Refractory high-entropy alloy with high strength and plasticity and preparation method thereof |
| CN114959405B (en) * | 2022-06-29 | 2023-03-14 | 中国航发北京航空材料研究院 | BCC type low-density high-entropy alloy fine-grain bar and preparation method thereof |
| CN115287518B (en) * | 2022-08-08 | 2023-08-18 | 攀枝花学院 | Light high-temperature alloy with low expansion coefficient and preparation method thereof |
| CN115491562B (en) * | 2022-08-31 | 2023-08-08 | 北京科技大学 | Multi-principal element porous alloy, preparation method thereof and porous electrode for electrolysis of seawater |
| CN115747605B (en) * | 2022-12-13 | 2024-03-19 | 中国科学院金属研究所 | High-entropy refractory alloy resistant to 1300 ℃ high-temperature oxidation and preparation method thereof |
| CN116855811B (en) * | 2023-07-05 | 2024-02-02 | 华中科技大学 | Zero-expansion dual-phase high-entropy alloy and preparation method thereof |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9150945B2 (en) * | 2011-10-27 | 2015-10-06 | Ut-Battelle, Llc | Multi-component solid solution alloys having high mixing entropy |
| CN103602872B (en) * | 2013-10-31 | 2015-09-23 | 北京科技大学 | A kind of TiZrNbVMo xhigh-entropy alloy and preparation method thereof |
-
2014
- 2014-07-04 CN CN201410319113.8A patent/CN104120325B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN104120325A (en) | 2014-10-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104120325B (en) | Low thermal expansion coefficient NaMxAlySiz high entropy alloy and preparation method thereof | |
| CN103498076B (en) | A kind of low-expansibility and antioxidant Ni-Fe-Cr based high-temperature alloy and preparation method thereof | |
| EP1842934B1 (en) | Heat-resistant superalloy | |
| CN106521243B (en) | A kind of Ni-Cr-Mo-Nb-Al-Ti systems high-temperature alloy material, preparation method and its application | |
| CN106756407B (en) | A kind of CrMnFeCoNiZr high-entropy alloy and preparation method thereof | |
| CN108385010A (en) | A kind of cobalt base superalloy and preparation method thereof of low-density, high structure stability | |
| CN105296836A (en) | NxMy high-entropy alloy with shape memory effect and preparing method thereof | |
| CN108384992A (en) | A kind of high-strength corrosion-resisting nickel base superalloy and its manufacturing method | |
| JP2001181767A (en) | High strength aluminum alloy | |
| KR20110120831A (en) | Cobalt-nickel superalloys, and related articles | |
| CN109321786B (en) | Cobalt-based high-temperature alloy and preparation method thereof | |
| CN107287535A (en) | A kind of big plastic high-strength degree zirconium-based bulk amorphous alloy and preparation method | |
| CN102808111B (en) | Preparation method for nickel-based superalloy for exhaust valve | |
| CN105543568B (en) | A kind of platiniferous non-rhenium nickel base single crystal superalloy and its preparation method and application | |
| CN103866392A (en) | Low rhenium and nickel-based single crystal high-temperature alloy and preparation method thereof | |
| CN107630153A (en) | A kind of die material cast Ni-base alloy | |
| CN106119605B (en) | A kind of titanium alloy under ultra-high temperature condition and its preparation method and application | |
| CN1886526B (en) | Nickel-containing alloys, method of manufacture thereof and articles derived thereform | |
| CN102443721A (en) | Nickel-cobalt-based high-temperature alloy with favorable structure stability and easiness for processing | |
| CN109022928A (en) | A kind of solar energy thermal-power-generating salt melting system erosion resistant foundry cobalt alloy and its technique | |
| CN110640152A (en) | Nickel-based alloy, preparation method thereof and manufactured article | |
| US20050067062A1 (en) | Single-crystal Ni-based superalloy with high temperature strength, oxidation resistance and hot corrosion resistance | |
| EP0387976A2 (en) | New superalloys and the methods for improving the properties of superalloys | |
| CN106756447B (en) | A kind of high-strength durable automobile die material and preparation method thereof | |
| CN106191527B (en) | Nickel-base alloy and the article formed by alloy |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |