CN115369299B - High-specific gravity energy-containing dual-phase high-entropy alloy and preparation method thereof - Google Patents
High-specific gravity energy-containing dual-phase high-entropy alloy and preparation method thereof Download PDFInfo
- Publication number
- CN115369299B CN115369299B CN202210999554.1A CN202210999554A CN115369299B CN 115369299 B CN115369299 B CN 115369299B CN 202210999554 A CN202210999554 A CN 202210999554A CN 115369299 B CN115369299 B CN 115369299B
- Authority
- CN
- China
- Prior art keywords
- entropy alloy
- phase
- alloy
- powder
- specific gravity
- 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
- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 93
- 239000000956 alloy Substances 0.000 title claims abstract description 93
- 230000005484 gravity Effects 0.000 title claims abstract description 34
- 238000002360 preparation method Methods 0.000 title claims abstract description 14
- 239000012071 phase Substances 0.000 claims abstract description 80
- 239000006104 solid solution Substances 0.000 claims abstract description 31
- 239000011159 matrix material Substances 0.000 claims abstract description 17
- 238000005245 sintering Methods 0.000 claims abstract description 11
- 239000007791 liquid phase Substances 0.000 claims abstract description 9
- 238000005516 engineering process Methods 0.000 claims abstract description 8
- 230000001052 transient effect Effects 0.000 claims abstract description 8
- 239000000203 mixture Substances 0.000 claims abstract description 6
- 239000000843 powder Substances 0.000 claims description 61
- 238000000034 method Methods 0.000 claims description 30
- 239000000126 substance Substances 0.000 claims description 24
- 239000000758 substrate Substances 0.000 claims description 18
- 230000008569 process Effects 0.000 claims description 16
- 238000000151 deposition Methods 0.000 claims description 12
- 229910052719 titanium Inorganic materials 0.000 claims description 11
- 238000001513 hot isostatic pressing Methods 0.000 claims description 10
- 238000007639 printing Methods 0.000 claims description 10
- 239000002994 raw material Substances 0.000 claims description 10
- 238000010438 heat treatment Methods 0.000 claims description 9
- 229910052720 vanadium Inorganic materials 0.000 claims description 9
- 230000008021 deposition Effects 0.000 claims description 7
- 238000011049 filling Methods 0.000 claims description 7
- 239000002356 single layer Substances 0.000 claims description 7
- 238000003860 storage Methods 0.000 claims description 7
- 239000000654 additive Substances 0.000 claims description 3
- 230000000996 additive effect Effects 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 229910052758 niobium Inorganic materials 0.000 claims description 2
- 238000003303 reheating Methods 0.000 claims description 2
- 230000001105 regulatory effect Effects 0.000 abstract description 3
- 230000001276 controlling effect Effects 0.000 abstract description 2
- 239000010936 titanium Substances 0.000 description 36
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 20
- 239000007789 gas Substances 0.000 description 16
- 238000010146 3D printing Methods 0.000 description 15
- 239000002245 particle Substances 0.000 description 14
- 238000002156 mixing Methods 0.000 description 13
- 229910052751 metal Inorganic materials 0.000 description 12
- 239000002184 metal Substances 0.000 description 12
- 229910052786 argon Inorganic materials 0.000 description 10
- 239000010410 layer Substances 0.000 description 10
- 238000011068 loading method Methods 0.000 description 10
- 239000011812 mixed powder Substances 0.000 description 10
- 238000012360 testing method Methods 0.000 description 10
- 230000006835 compression Effects 0.000 description 7
- 238000007906 compression Methods 0.000 description 7
- 238000012512 characterization method Methods 0.000 description 6
- 229910052715 tantalum Inorganic materials 0.000 description 6
- 238000009864 tensile test Methods 0.000 description 6
- 238000003723 Smelting Methods 0.000 description 5
- 229910001069 Ti alloy Inorganic materials 0.000 description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 5
- 238000004093 laser heating Methods 0.000 description 5
- 239000001301 oxygen Substances 0.000 description 5
- 229910052760 oxygen Inorganic materials 0.000 description 5
- 238000012545 processing Methods 0.000 description 5
- 229910052721 tungsten Inorganic materials 0.000 description 5
- 238000001291 vacuum drying Methods 0.000 description 5
- 238000005275 alloying Methods 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 238000002844 melting Methods 0.000 description 4
- 230000008018 melting Effects 0.000 description 4
- 238000001878 scanning electron micrograph Methods 0.000 description 4
- 238000002441 X-ray diffraction Methods 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 230000000877 morphologic effect Effects 0.000 description 3
- 238000007873 sieving Methods 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 238000000889 atomisation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 229910052735 hafnium Inorganic materials 0.000 description 2
- 229910052750 molybdenum Inorganic materials 0.000 description 2
- 101001133654 Homo sapiens Protein PALS1 Proteins 0.000 description 1
- 102100034054 Protein PALS1 Human genes 0.000 description 1
- 241001062472 Stokellia anisodon Species 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000007648 laser printing Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- JTJMJGYZQZDUJJ-UHFFFAOYSA-N phencyclidine Chemical compound C1CCCCN1C1(C=2C=CC=CC=2)CCCCC1 JTJMJGYZQZDUJJ-UHFFFAOYSA-N 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000007712 rapid solidification Methods 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
-
- 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
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
- B22F10/20—Direct sintering or melting
- B22F10/25—Direct deposition of metal particles, e.g. direct metal deposition [DMD] or laser engineered net shaping [LENS]
-
- 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
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
- B22F10/60—Treatment of workpieces or articles after build-up
- B22F10/64—Treatment of workpieces or articles after build-up by thermal means
-
- 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
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
- B22F10/60—Treatment of workpieces or articles after build-up
- B22F10/66—Treatment of workpieces or articles after build-up by mechanical means
-
- 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
- B22F3/12—Both compacting and sintering
- B22F3/14—Both compacting and sintering simultaneously
- B22F3/15—Hot isostatic pressing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y10/00—Processes of additive manufacturing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y40/00—Auxiliary operations or equipment, e.g. for material handling
- B33Y40/20—Post-treatment, e.g. curing, coating or polishing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y80/00—Products made by additive manufacturing
-
- 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
- C22C1/045—Alloys based on refractory metals
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C30/00—Alloys containing less than 50% by weight of each constituent
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Powder Metallurgy (AREA)
Abstract
The invention relates to a high specific gravity energy-containing dual-phase high-entropy alloy and a preparation method thereof, belonging to the technical field of high-entropy alloy. The high-entropy alloy is composed of a solid solution matrix phase formed by a hard solid solution phase of A element and B, C element, and has a density of 9.5g/cm or more 3 The energy-containing dual-phase high-entropy alloy with high density, high strength, good energy release characteristic and good plasticity is obtained by optimizing the composition components of the alloy and regulating and controlling the microstructure; in addition, the high-entropy alloy is prepared by adopting a laser transient liquid phase sintering technology, has the advantages of simple preparation process, short period, small limit on geometric dimension and low cost, has the excellent performances of large density adjustable range, high strength, good energy release characteristic, good plasticity and the like, and has great application prospect in the aspect of preparing the high-specific gravity energy-containing high-entropy alloy.
Description
Technical Field
The invention relates to a high specific gravity energy-containing dual-phase high-entropy alloy and a preparation method thereof, belonging to the technical field of high-entropy alloy.
Background
One of the refractory high-entropy alloy of the high-specific gravity energy-containing high-entropy alloy mainly consists of three or more of high-density elements such as W, mo and Ta, hf, nb, ti, zr, V, cr, and a small amount of other elements, and is also called as a medium-entropy alloy when the alloy elements are less than four. The alloy system has higher melting point and density and good energy release property, and the characteristics lead the alloy system to have wide application prospect in high-temperature structures, weaponry and nuclear industry.
In the alloy system, the content of W, mo Ta and Hf determines the specific gravity of the alloy, and Ta, hf, nb, ti, zr, V and other elements endow the alloy with energy release characteristics in the failure process. In the actual use process, elements such as Ta, hf and the like are beneficial to performance, but the cost is higher, and the addition amount is usually smaller; however, economical alloy elements such as W, mo have the problem of high ductile-brittle transition temperature, and after the addition, the plasticity and toughness of the alloy are rapidly reduced, so that the advantages of high specific gravity and good high-temperature performance are difficult to develop.
In addition, the alloy containing high-melting-point components is difficult to smelt, and large undissolved raw materials are easy to remain due to unreasonable smelting process; if sintering is used, it is necessary to keep the temperature at a very high temperature for a long period of time in order to densify as much as possible, which in turn leads to coarse structures. The prior art still has more difficulties in preparing high-specific gravity energetic high/medium entropy alloy parts, which seriously hampers practical application.
Disclosure of Invention
Aiming at the problems of the prior high-specific gravity energy-containing high-entropy alloy, the invention provides the high-specific gravity energy-containing dual-phase high-entropy alloy and the preparation method thereof, and the dual-phase high-entropy alloy with high density, high strength, good energy release characteristic and good plasticity is obtained by optimizing the composition components of the alloy and regulating and controlling the microstructure; in addition, the dual-phase high-entropy alloy is prepared by adopting a laser transient liquid phase sintering technology, and the characteristics of high heating temperature, short heat preservation time, rapid solidification and the like are utilized, so that alloy components can be selectively melted, the reaction among the alloy components is reduced, the growth of crystal grains is limited, and the alloy performance deterioration caused by excessive reaction among residual large undissolved raw materials or the alloy components is avoided.
The aim of the invention is achieved by the following technical scheme.
A high-specific-gravity energy-containing dual-phase high-entropy alloy is a solid solution formed by a hard solid solution phase of A-type elements and B, C-type elementsThe density of the matrix phase composition is 9.5g/cm or more 3 The chemical formula of the alloy is abbreviated as A according to atomic percent x B y C z Wherein, the A-type element contains one or two of W and Mo, x is more than or equal to 55 and less than or equal to 80, the B-type element contains three of Ti, zr and Nb, ti is more than or equal to 5 and less than or equal to 25, zr is more than or equal to 5 and less than or equal to 25, nb is more than or equal to 5 and less than or equal to 25, y is more than or equal to 15 and less than or equal to 35, the C-type element contains at least one of Al, V, ta, hf, co, mn, ni, cr, fe and B, z is more than or equal to 5 and less than or equal to 30, and x+y+z=100.
The preparation method of the high-specific gravity energy-containing dual-phase high-entropy alloy specifically comprises the following steps:
filling raw material powder into a powder storage tank of coaxial powder feeding laser additive manufacturing equipment, opening a laser heat source, synchronously starting and conveying the raw material powder, scanning the laser according to a preset program path, obtaining a block-shaped blank of the high-specific-gravity energy-containing dual-phase high-entropy alloy with a required shape on a substrate after printing, and then carrying out aftertreatment to improve the density of the block-shaped blank and reduce the porosity to obtain the high-specific-gravity energy-containing dual-phase high-entropy alloy;
the raw material powder is a mixture of simple substance powder corresponding to A, B, C elements or a mixture of simple substance powder of A elements and alloy powder composed of B, C elements; the post-treatment is heat treatment, hot isostatic pressing treatment or hot isostatic pressing treatment before reheating treatment.
Further, the particle size of the raw material powder is 5-150 μm.
Further, the process parameters in the printing process are as follows: the laser spot diameter is 0.5-6 mm, the scanning speed is 5-30 mm/s, the laser power is 500-3000W, the powder feeding rate is 0.5-5 r/min, and the single-layer deposition thickness is 1-4 mm.
Further, the temperature and time of the heat treatment are respectively 700-1200 ℃, 2-8 h, and the pressure, temperature and time of the hot isostatic pressing are respectively 100-180 MPa, 1000-1500 ℃ and 2-10 h.
The beneficial effects are that:
(1) In the high-entropy alloy, the high-content A-type elements endow the high-density and high-strength characteristics, B, C-type elements form solid solution matrix phases with good plasticity and toughness and provide energy release characteristics, and meanwhile, the hard solid solution phases formed by the A-type elements are uniformly distributed with the solid solution matrix phases, have fine tissues, so that the high-entropy alloy has excellent mechanical properties with good strong plastic matching.
(2) The invention adopts coaxial powder feeding laser additive manufacturing equipment to prepare high specific gravity energy-containing dual-phase high-entropy alloy, mainly utilizes a laser instantaneous liquid phase sintering technology, has high and controllable heating temperature, can be selectively melted according to the melting point of each element, has short sintering time and quick solidification, can ensure that B, C elements in a molten pool are melted in the laser printing process while keeping A elements not melted or melted in a small amount, reduces the alloy performance deterioration caused by the melting of the A elements into B, C elements or mutual reaction, and can also limit excessive growth of crystal grains, thereby obtaining the dual-phase high-entropy alloy consisting of a granular phase of the A elements and a matrix phase formed by melting the B, C elements.
(3) The method has the advantages of simple preparation process, short period, small limit of geometric dimension and low cost, and the prepared dual-phase high-entropy alloy has the excellent performances of large density adjustable range, high strength, good energy release characteristic, good plasticity and the like, and has great application prospect in the aspect of preparing the high-specific-gravity energy-containing high-entropy alloy.
Drawings
FIG. 1 is a W prepared in example 5 70 Ti 10 Zr 5 Nb 5 V 5 Al 5 X-ray diffraction (XRD) patterns of (a).
FIG. 2 is a W prepared in example 5 70 Ti 10 Zr 5 Nb 5 V 5 Al 5 Scanning Electron Microscope (SEM) images of (a).
FIG. 3 is a W prepared in example 5 70 Ti 10 Zr 5 Nb 5 V 5 Al 5 Is a quasi-static stretch graph of (2).
FIG. 4 is a W prepared in example 5 70 Ti 10 Zr 5 Nb 5 V 5 Al 5 Dynamic compressive true stress-strain curve of (2).
Detailed Description
The present invention will be further described with reference to the following detailed description, wherein the processes are conventional, and wherein the starting materials are commercially available from the open market, unless otherwise specified.
In the following examples:
1) Reagent and apparatus
W, mo, ti, zr, V, nb, al, hf, ta, cr, mn, fe, co and Ni have metal purity of more than 99.9wt.%, and bulk metal simple substance is purchased from Minodyn (Beijing) technology Co., ltd, and powder metal simple substance is purchased from Star dust technology Co., ltd; argon purity greater than or equal to 99.999vol.% from plax gas; the main equipment information is shown in Table 1.
TABLE 1
2) Testing and characterization
(1) And (3) phase analysis: the XRD sample size is 5mm multiplied by 10mm, firstly, the sharp edge is polished and flattened by 120# abrasive paper, and then 240# to 2000# abrasive paper is sequentially used for polishing; the X-ray source is K alpha rays of a Cu target, the wavelength lambda= 0.1542nm, the working voltage is 40kV, the working current is 40mA, the step length is 0.02 DEG, the scanning speed is 5 DEG/min, the measuring angle is 20 DEG-100 DEG, and the measuring error angle is less than 0.01 deg.
(2) Density testing: the high entropy alloy density was tested using a DT-100 precision balance, the execution standard being GB5363-2005, sample size consistent with XRD samples.
(3) Morphology characterization: the sample size was 5mm by 5mm, and after being mounted on a thermal mounting machine, it was sequentially ground with 240# to 7000# sandpaper and polished with a silica suspension having a particle size of 0.05 μm; the microcosmic morphology was characterized by using a japanese regulatory 8230 cold field emission scanning electron microscope, secondary electron imaging, operating voltage 15kV.
(4) Quasi-static tensile test: measuringThe test sample is prepared into an I-shaped part sample according to the specification of GB/T228.1-2010, and the I-shaped part sample is processed on a CMT4305 microcomputer electronic universal testing machine, and the stretching speed is 10 -3 /s。
(5) Dynamic compression and energy release test: according to GJB-5365-2005 standard, the sample size is phi 4 multiplied by 4mm, the axial room temperature dynamic compression mechanical property of the alloy is tested by adopting a Split Hopkinson Pressure Bar (SHPB), and the strain rate is 10 3 S; the strain rate is gradually increased until the alloy is burnt when being loaded, the strain rate at the moment is regarded as the energy release threshold value of the alloy, and the lower the threshold value is, the better the energy release effect of the alloy is indicated.
Example 1
Preparation of high specific gravity energy-containing dual-phase high entropy alloy Mo with dimensions of 30mm multiplied by 20mm multiplied by 10mm (length multiplied by width multiplied by thickness) based on laser transient liquid phase sintering technology 55 Ti 10 Zr 15 Nb 10 Al 10 The method comprises the following specific steps:
(1) Under the protection of argon, the method comprises the following steps of: 15:10: mixing the surface-treated Ti, zr, nb and Al metal simple substances in an atomic ratio of 10, carrying out alloying smelting, preparing powder by an air atomization method after the mixed metal simple substances are completely melted into alloy liquid, and sieving to obtain TiZrNbAl alloy powder with the particle size of 45-150 mu m;
(2) Mixing approximately spherical Mo simple substance powder with the grain diameter of 5-25 mu m with TiZrNbAl alloy powder prepared in the step (1) according to the proportion of 55: mixing powder in a mixer for 240min at an atomic ratio of 45, vacuum drying, and then loading into a powder storage tank of a powder feeder;
(3) Inputting corresponding data into control software of 3D printing based on the macroscopic size of the prepared high specific gravity energy-containing dual-phase high-entropy alloy to finish CAD three-dimensional modeling, and subsequently generating a program path of automatic laser forming;
(4) Placing the TC4 titanium alloy substrate into a gas protection chamber, fastening, and filling argon into the gas protection chamber to ensure that the oxygen content in the gas protection chamber is lower than 150ppm;
(5) Introducing a laser heat source, synchronously starting a powder feeder to convey mixed powder to a laser heating area of 3D printing equipment, continuously lifting a laser heat source processing head (a substrate is motionless at the moment) in a forming process, scanning laser along a section slicing track of a CAD model of the part, depositing the synchronously conveyed mixed powder flow on the substrate, stacking layer by layer until printing is completed, and obtaining a massive blank of the high-specific gravity energy-containing dual-phase high-entropy alloy with a required shape on the substrate;
wherein, the technological parameters of 3D printing are as follows: the diameter of a laser spot is 1mm, the scanning speed of the laser spot is 8mm/s, the laser power is 800W, the powder feeding speed is 0.8r/min, and the single-layer deposition thickness is 1.1mm;
(6) Subjecting the block blank obtained in the step (5) to hot isostatic pressing, namely, treating for 2 hours under the conditions of 110MPa and 1100 ℃ to obtain a density of 11.83g/cm 3 High specific gravity energy-containing dual-phase high entropy alloy with chemical formula of Mo for short 55 Ti 10 Zr 20 Nb 10 Al 5 。
According to the morphological characterization result, the light particles in the SEM image are hard solid solution phases of Mo, the dark parts are solid solution matrix phases composed of Ti, zr, nb and Al, and the hard solid solution phases and the solid solution matrix phases are uniformly distributed, have fine tissues and have clear two-phase interfaces.
As can be seen from the quasi-static tensile test, mo 55 Ti 10 Zr 15 Nb 10 Al 10 The yield strength of (2) was 620MPa, the tensile strength was 910MPa, and the elongation was 4.2%. As can be seen from dynamic compression and energy release tests, mo 55 Ti 10 Zr 15 Nb 10 Al 10 The dynamic compressive strength of (2) is 1600MPa, the breaking strain is 49%, the fire is generated under dynamic loading, and the energy release threshold is 3800s -1 。
Example 2
Preparation of high specific gravity energy-containing dual-phase high entropy alloy W with dimensions of 30mm multiplied by 20mm multiplied by 10mm (length multiplied by width multiplied by thickness) based on laser transient liquid phase sintering technology 60 Ti 10 Zr 10 Nb 15 V 5 The method comprises the following specific steps:
(1) Under the protection of argon, the method comprises the following steps of: 10:15:5, mixing the surface-treated Ti, zr, nb and V metal simple substances, alloying and smelting, preparing powder by a rotary electrode method after the mixed metal simple substances are completely melted into alloy liquid, and sieving to obtain TiZrNbV alloy powder with the particle size of 45-150 mu m;
(2) Mixing approximately spherical W simple substance powder with the particle size of 5-25 mu m with TiZrNbV alloy powder prepared in the step (1) according to the proportion of 60: mixing powder in a mixer for 360min at an atomic ratio of 40, vacuum drying, and then loading into a powder storage tank of a powder feeder;
(3) Inputting corresponding data into control software of 3D printing based on the macroscopic size of the prepared high specific gravity energy-containing dual-phase high-entropy alloy to finish CAD three-dimensional modeling, and subsequently generating a program path of automatic laser forming;
(4) Placing the TC4 titanium alloy substrate into a gas protection chamber, fastening, and filling argon into the gas protection chamber to ensure that the oxygen content in the gas protection chamber is lower than 150ppm;
(5) Introducing a laser heat source, synchronously starting a powder feeder to convey mixed powder to a laser heating area of 3D printing equipment, continuously lifting a laser heat source processing head in a forming process, scanning laser along a section slicing track of a CAD model of the part, depositing the synchronously conveyed mixed powder on a substrate, stacking layer by layer until printing is completed, and obtaining a block-shaped blank of the high-specific-gravity energy-containing dual-phase high-entropy alloy with a required shape on the substrate;
wherein, the technological parameters of 3D printing are as follows: the diameter of a laser spot is 6mm, the scanning speed of the laser spot is 15mm/s, the laser power is 1600W, the powder feeding speed is 2.5r/min, and the single-layer deposition thickness is 2.4mm;
(6) Carrying out heat treatment on the block-shaped green body obtained in the step (5), namely, carrying out water cooling after 8 hours of treatment at 800 ℃ to obtain a green body with the density of 12.73g/cm 3 High specific gravity energy-containing dual-phase high entropy alloy with chemical formula of W 60 Ti 10 Zr 10 Nb 15 V 5 。
According to the morphological characterization result, the light particles in the SEM image are the hard solid solution phase of W, the dark parts are the solid solution matrix phase composed of Ti, zr, nb and V, the hard solid solution phase and the solid solution matrix phase are uniformly distributed, the tissue is tiny, and the two-phase interface is clear.
From the quasi-static tensile test, W 60 Ti 10 Zr 10 Nb 15 V 5 Has a yield strength of 660MPa and a tensile strength of 930MPa, elongation at 3.9%. Through dynamic compression and energy release tests, it is known that W 60 Ti 10 Zr 10 Nb 15 V 5 The dynamic compressive strength of (2) is 1900MPa, the breaking strain is 46%, intense fire light is generated under dynamic loading, and the energy release threshold is 4060s -1 。
Example 3
Preparation of high specific gravity energy-containing dual-phase high entropy alloy Mo with dimensions of 30mm multiplied by 20mm multiplied by 10mm (length multiplied by width multiplied by thickness) based on laser transient liquid phase sintering technology 60 Ti 10 Zr 10 Nb 10 Hf 10 The method comprises the following specific steps:
(1) Nearly spherical Mo, ti, zr, nb with the grain diameter of 5-25 mu m and simple metal Hf are prepared according to the following ratio of 60:10:10:10:10 atomic ratio, mixing in a mixer for 400min, vacuum drying, and loading into a powder storage tank of a powder feeder;
(2) Inputting corresponding data into control software of 3D printing based on the macroscopic size of the prepared high specific gravity energy-containing dual-phase high-entropy alloy to finish CAD three-dimensional modeling, and subsequently generating a program path of automatic laser forming;
(3) Placing the TC4 titanium alloy substrate into a gas protection chamber, fastening, and filling argon into the gas protection chamber to ensure that the oxygen content in the gas protection chamber is lower than 150ppm;
(4) Introducing a laser heat source, synchronously starting a powder feeder to convey mixed powder to a laser heating area of 3D printing equipment, continuously lifting a laser heat source processing head in a forming process, scanning laser along a section slicing track of a CAD model of the part, depositing the synchronously conveyed mixed powder on a substrate, stacking layer by layer until printing is completed, and obtaining a block-shaped blank of the high-specific-gravity energy-containing dual-phase high-entropy alloy with a required shape on the substrate;
wherein, the technological parameters of 3D printing are as follows: the diameter of a laser spot is 4mm, the scanning speed of the laser spot is 6mm/s, the laser power is 2800W, the powder feeding speed is 3r/min, and the single-layer deposition thickness is 1.8mm;
(5) Performing hot isostatic pressing treatment on the block blank obtained in the step (4), namely, treating for 4 hours under the conditions of 120MPa of pressure and 1200 ℃ of temperature to obtain a density of 9.52g/cm 3 High specific gravity energy-containing diphasic highEntropy alloy, the chemical formula of which is abbreviated as Mo 60 Ti 10 Zr 10 Nb 10 Hf 10 。
According to the appearance characterization result, the light particles in the SEM image are hard solid solution phases of Mo, the dark parts are solid solution matrix phases consisting of Ti, zr, nb and Hf, the hard solid solution phases and the solid solution matrix phases are uniformly distributed, the tissue is fine, and the two-phase interface is clear.
As can be seen from the quasi-static tensile test, mo 60 Ti 10 Zr 10 Nb 10 Hf 10 The yield strength of (C) was 790MPa, the tensile strength was 970MPa, and the elongation was 4.2%. As can be seen from dynamic compression and energy release tests, mo 60 Ti 10 Zr 10 Nb 10 Hf 10 Has a dynamic compressive strength of 1980MPa, a breaking strain of 40%, and generates a distinct fire under dynamic loading, and has an energy release threshold of 4800s -1 。
Example 4
Preparation of high specific gravity energy-containing dual-phase high entropy alloy Mo with dimensions of 30mm multiplied by 20mm multiplied by 10mm (length multiplied by width multiplied by thickness) based on laser transient liquid phase sintering technology 70 Ti 10 Zr 5 Nb 5 Ta 10 The method comprises the following specific steps:
(1) Under the protection of argon, the method comprises the following steps of: 5:5: mixing the surface-treated Ti, zr, nb and Ta metal simple substances in an atomic ratio of 10, carrying out alloying smelting, preparing powder by a plasma spheroidizing method after the mixed metal simple substances are completely melted into alloy liquid, and screening to obtain TiZrNbTa alloy powder with the particle size of 45-150 mu m;
(2) Mixing approximately spherical Mo simple substance powder with the grain diameter of 5-25 mu m with TiZrNbTa alloy powder prepared in the step (1) according to the proportion of 70: mixing powder in a mixer for 360min at an atomic ratio of 30, vacuum drying, and then loading into a powder storage tank of a powder feeder;
(3) Inputting corresponding data into control software of 3D printing based on the macroscopic size of the prepared high specific gravity energy-containing dual-phase high-entropy alloy to finish CAD three-dimensional modeling, and subsequently generating a program path of automatic laser forming;
(4) Placing the TC4 titanium alloy substrate into a gas protection chamber, fastening, and filling argon into the gas protection chamber to ensure that the oxygen content in the gas protection chamber is lower than 150ppm;
(5) Introducing a laser heat source, synchronously starting a powder feeder to convey mixed powder to a laser heating area of 3D printing equipment, continuously lifting a laser heat source processing head in a forming process, scanning laser along a section slicing track of a CAD model of the part, depositing the synchronously conveyed mixed powder on a substrate, stacking layer by layer until printing is completed, and obtaining a block-shaped blank of the high-specific-gravity energy-containing dual-phase high-entropy alloy with a required shape on the substrate;
wherein, the technological parameters of 3D printing are as follows: the diameter of a laser spot is 3mm, the scanning speed of the laser spot is 30mm/s, the laser power is 2000W, the powder feeding speed is 2r/min, and the single-layer deposition thickness is 2.2mm;
(6) Carrying out hot isostatic pressing treatment on the block-shaped blank obtained in the step (5), and then carrying out heat treatment, wherein the pressure, the temperature and the time of the hot isostatic pressing treatment are respectively 170MPa, 1400 ℃ and 8 hours, the temperature, the time and the cooling mode of the heat treatment are respectively 1100 ℃,5 hours and air cooling, and the density is 9.61g/cm 3 High specific gravity energy-containing dual-phase high entropy alloy with chemical formula of Mo for short 70 Ti 10 Zr 5 Nb 5 Ta 10 。
According to the morphological characterization result, the light particles in the SEM image are hard solid solution phases of Mo, the dark parts are solid solution matrix phases composed of Ti, zr, nb and Ta, and the hard solid solution phases and the solid solution matrix phases are uniformly distributed, have fine tissues and have clear two-phase interfaces.
As can be seen from the quasi-static tensile test, mo 70 Ti 10 Zr 5 Nb 5 Ta 10 The yield strength of (C) was 850MPa, the tensile strength was 990MPa, and the elongation was 3.5%. As can be seen from dynamic compression and energy release tests, mo 70 Ti 10 Zr 5 Nb 5 Ta 10 Has a dynamic compressive strength of 2060MPa, a breaking strain of 33%, generates a fire under dynamic loading, and has an energy release threshold of 5200s -1 。
Example 5
Preparation of a preform with dimensions 30mm x 20mm x 10mm (length x width x) based on laser transient liquid phase sintering techniqueThick) high specific gravity energy-containing dual-phase high entropy alloy W 70 Ti 10 Zr 5 Nb 5 V 5 Al 5 The method comprises the following specific steps:
(1) Under the protection of argon, the method comprises the following steps of: 5:5:5:5, mixing the surface-treated Ti, zr, V, nb and the Al metal simple substance according to the atomic ratio, carrying out alloying smelting, preparing powder by an air atomization method after the mixed metal simple substance is completely melted into alloy liquid, and sieving to obtain TiZrVNbAl alloy powder with the particle size of 45-150 mu m;
(2) Mixing approximately spherical W simple substance powder with the particle size of 5-25 mu m with TiZrVNbAl alloy powder prepared in the step (1) according to the proportion of 70: mixing powder in a mixer for 360min at an atomic ratio of 30, vacuum drying, and then loading into a powder storage tank of a powder feeder;
(3) Inputting corresponding data into control software of 3D printing based on the macroscopic size of the prepared high specific gravity energy-containing dual-phase high-entropy alloy to finish CAD three-dimensional modeling, and subsequently generating a program path of automatic laser forming;
(4) Placing the TC4 titanium alloy substrate into a gas protection chamber, fastening, and filling argon into the gas protection chamber to ensure that the oxygen content in the gas protection chamber is lower than 150ppm;
(5) Introducing a laser heat source, synchronously starting a powder feeder to convey mixed powder to a laser heating area of 3D printing equipment, continuously lifting a laser heat source processing head in a forming process, scanning laser along a section slicing track of a CAD model of the part, depositing the synchronously conveyed mixed powder on a substrate, stacking layer by layer until printing is completed, and obtaining a block-shaped blank of the high-specific-gravity energy-containing dual-phase high-entropy alloy with a required shape on the substrate;
wherein, the technological parameters of 3D printing are as follows: the diameter of a laser spot is 6mm, the scanning speed of the laser spot is 25mm/s, the laser power is 2500W, the powder feeding speed is 4.5r/min, and the single-layer deposition thickness is 3.8mm;
(6) Performing hot isostatic pressing treatment on the block blank obtained in the step (5), namely, treating for 4 hours under the conditions of 140MPa of pressure and 1300 ℃ of temperature to obtain a density of 14.72g/cm 3 High specific gravity energy-containing dual-phase high entropy alloy with chemical formula of W 70 Ti 10 Zr 5 Nb 5 V 5 Al 5 。
For W 70 Ti 10 Zr 5 Nb 5 V 5 Al 5 As can be seen from fig. 1, the high-entropy alloy consists of a hard solid solution phase and a solid solution matrix phase, both of which are BCC, with no remaining impurity phases.
For W 70 Ti 10 Zr 5 Nb 5 V 5 Al 5 As can be seen from fig. 2, the morphology is characterized in that the light particles are a hard solid solution phase of W, the dark particles are a solid solution matrix phase composed of Ti, zr, nb, V and Al, and the hard solid solution phase and the solid solution matrix phase are uniformly distributed, have a fine structure and have a clear interface between the two phases.
From the quasi-static tensile test, W 70 Ti 10 Zr 5 Nb 5 V 5 Al 5 Has a yield strength of 990MPa, a tensile strength of 1230MPa, and an elongation of 3.7%, as shown in FIG. 3. Through dynamic compression and energy release tests, it is known that W 70 Ti 10 Zr 5 Nb 5 V 5 Al 5 Has a dynamic compressive strength of 1980MPa, a breaking strain of 43%, and generates intense fire under dynamic loading, and has an energy release threshold of 4100 -1 As shown in fig. 4.
In summary, the above embodiments are only preferred embodiments of the present invention, and are not intended to limit the scope of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (3)
1. A preparation method of a high-specific gravity energy-containing dual-phase high-entropy alloy is characterized by comprising the following steps of: the high specific gravity energy-containing dual-phase high entropy alloy is prepared by adopting a laser transient liquid phase sintering technology and comprises the following steps,
filling raw material powder into a powder storage tank of coaxial powder feeding laser additive manufacturing equipment, opening a laser heat source, synchronously starting and conveying the raw material powder, scanning the laser according to a preset program path, obtaining a block-shaped blank of the high-specific-gravity energy-containing dual-phase high-entropy alloy with a required shape on a substrate after printing, and then carrying out aftertreatment to improve the density of the block-shaped blank and reduce the porosity to obtain the high-specific-gravity energy-containing dual-phase high-entropy alloy;
the high-specific gravity energy-containing dual-phase high-entropy alloy is composed of a solid solution matrix phase formed by a hard solid solution phase of A-type elements and B, C-type elements, and has a density of 9.5g/cm or more 3 The chemical formula of the alloy is abbreviated as A according to atomic percent x B y C z Wherein, the A-type element is Mo, 55-80, the B-type element contains Ti, zr and Nb, 5-25, 15-35, at least one of Al, V, ta, hf, co, mn, ni, cr, fe and B, 5-30, x+y+z=100;
the raw material powder is a mixture of simple substance powder of A-class elements and alloy powder composed of B, C-class elements;
the post-treatment is heat treatment, or hot isostatic pressing treatment reheating treatment;
the process parameters in the printing process are as follows: the scanning speed is 8-30 mm/s, the laser power is 1600-3000W, the powder feeding speed is 0.5-5 r/min, and the single-layer deposition thickness is 1-4 mm;
the temperature and time of the heat treatment are respectively 700-1200 ℃, 2-8 h, and the pressure, temperature and time of the hot isostatic pressing are respectively 100-180 MPa, 1000-1500 ℃ and 2-10 h.
2. The method for preparing the high-specific gravity energy-containing dual-phase high-entropy alloy according to claim 1, which is characterized in that: the grain size of the raw material powder is 5-150 mu m.
3. The method for preparing the high-specific gravity energy-containing dual-phase high-entropy alloy according to claim 1, which is characterized in that: the process parameters in the printing process are as follows: the diameter of the laser spot is 0.5-6 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210999554.1A CN115369299B (en) | 2022-08-19 | 2022-08-19 | High-specific gravity energy-containing dual-phase high-entropy alloy and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210999554.1A CN115369299B (en) | 2022-08-19 | 2022-08-19 | High-specific gravity energy-containing dual-phase high-entropy alloy and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115369299A CN115369299A (en) | 2022-11-22 |
| CN115369299B true CN115369299B (en) | 2024-04-16 |
Family
ID=84066475
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210999554.1A Active CN115369299B (en) | 2022-08-19 | 2022-08-19 | High-specific gravity energy-containing dual-phase high-entropy alloy and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115369299B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116254447B (en) * | 2022-12-30 | 2024-05-28 | 贵州大学 | High-entropy alloy with high strength and high plasticity and laser additive manufacturing method thereof |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104313377A (en) * | 2014-10-11 | 2015-01-28 | 哈尔滨工业大学 | High specific gravity tungsten alloy material and preparation method thereof |
| US20170314097A1 (en) * | 2016-05-02 | 2017-11-02 | Korea Advanced Institute Of Science And Technology | High-strength and ultra heat-resistant high entropy alloy (hea) matrix composites and method of preparing the same |
| CN109022989A (en) * | 2018-09-21 | 2018-12-18 | 成都理工大学 | A kind of preparation method of high-entropy alloy Binder Phase tungsten base high-specific-gravity alloy |
| CN109226753A (en) * | 2018-09-20 | 2019-01-18 | 北京理工大学 | The method for preparing tungsten particle enhancing metal-base composites based on 3D printing technique |
| CN109482876A (en) * | 2018-12-05 | 2019-03-19 | 航天特种材料及工艺技术研究所 | A kind of laser forming method of tungsten alloy complex component |
| CN111676408A (en) * | 2020-05-25 | 2020-09-18 | 北京理工大学 | Tungsten-energetic high-entropy alloy composite material and preparation method thereof |
| CN113430439A (en) * | 2021-06-28 | 2021-09-24 | 北京理工大学 | Phase distribution uniformity control method of high-toughness active tungsten alloy |
| CN114657431A (en) * | 2022-02-18 | 2022-06-24 | 安泰天龙钨钼科技有限公司 | Energetic tungsten alloy material and preparation method thereof |
-
2022
- 2022-08-19 CN CN202210999554.1A patent/CN115369299B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104313377A (en) * | 2014-10-11 | 2015-01-28 | 哈尔滨工业大学 | High specific gravity tungsten alloy material and preparation method thereof |
| US20170314097A1 (en) * | 2016-05-02 | 2017-11-02 | Korea Advanced Institute Of Science And Technology | High-strength and ultra heat-resistant high entropy alloy (hea) matrix composites and method of preparing the same |
| CN109226753A (en) * | 2018-09-20 | 2019-01-18 | 北京理工大学 | The method for preparing tungsten particle enhancing metal-base composites based on 3D printing technique |
| CN109022989A (en) * | 2018-09-21 | 2018-12-18 | 成都理工大学 | A kind of preparation method of high-entropy alloy Binder Phase tungsten base high-specific-gravity alloy |
| CN109482876A (en) * | 2018-12-05 | 2019-03-19 | 航天特种材料及工艺技术研究所 | A kind of laser forming method of tungsten alloy complex component |
| CN111676408A (en) * | 2020-05-25 | 2020-09-18 | 北京理工大学 | Tungsten-energetic high-entropy alloy composite material and preparation method thereof |
| CN113430439A (en) * | 2021-06-28 | 2021-09-24 | 北京理工大学 | Phase distribution uniformity control method of high-toughness active tungsten alloy |
| CN114657431A (en) * | 2022-02-18 | 2022-06-24 | 安泰天龙钨钼科技有限公司 | Energetic tungsten alloy material and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115369299A (en) | 2022-11-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108213422B (en) | Preparation method of carbon-containing high-entropy alloy composite material | |
| WO2022174766A1 (en) | Titanium alloy powder for selective laser melting 3d printing, and selective laser melting titanium alloy and preparation thereof | |
| Gao et al. | Electron beam melted TiC/high Nb–TiAl nanocomposite: Microstructure and mechanical property | |
| CN111151746B (en) | Additive manufacturing method of titanium-based composite material with self-generated embedded superfine net structure reinforcement | |
| CN110218907A (en) | A kind of boron-containing titanium-based composite powder and preparation method thereof for 3D printing | |
| CN108372294A (en) | A kind of high-entropy alloy powder and preparation method thereof | |
| WO2015089533A1 (en) | W-ni sputter target | |
| CN113293325B (en) | Preparation method of high-strength Ti185 alloy | |
| CN107498054A (en) | A kind of method that toughness reinforcing 24CrNiMo steel alloys are prepared using selective laser smelting technology | |
| CN115369299B (en) | High-specific gravity energy-containing dual-phase high-entropy alloy and preparation method thereof | |
| CN108044123B (en) | Preparation method of Nb-Si-Ti alloy with directional solidification structure | |
| Hu et al. | Achieving high-performance pure tungsten by additive manufacturing: Processing, microstructural evolution and mechanical properties | |
| Huang et al. | From crack-prone to crack-free: Unravelling the roles of LaB6 in a β-solidifying TiAl alloy fabricated with laser additive manufacturing | |
| CN113967734B (en) | Titanium alloy mixed powder for preparing titanium alloy piece by laser additive and using method | |
| Ebel et al. | Metal injection moulding of advanced titanium alloys | |
| Xiao et al. | Microstructure and mechanical properties of powder metallurgy Ti-Al-Mo-V-Ag alloy | |
| Zhang et al. | Tensile properties and deformation behavior of an extra-low interstitial fine-grained powder metallurgy near alpha titanium alloy by recycling coarse pre-alloyed powder | |
| Guo et al. | Investigation on annealing strengthening effect of laser cladding Fe5Cr5Co5SiTiNbMoW high-entropy alloy coating | |
| Li et al. | Fabrication of TiB whiskers reinforced Ti6242 matrix composites by direct laser deposition: Powder preparation, microstructure and mechanical property | |
| CN114951639A (en) | High-density fine-grain structure molybdenum alloy plug and preparation method thereof | |
| Jiang et al. | The effect of addition of cerium on the grain refinement of Mg–3Al–1Zn cast alloy | |
| Kuś et al. | First attempt to print Co-based alloys with high glass forming ability by selective laser melting | |
| Yi et al. | Tensile property and microstructure of Al− 4.77 Mn− 1.37 Mg− 0.67 Sc− 0.25 Zr alloy under different selective laser melting processing parameters | |
| CN116121669B (en) | Bamboo shoot structure W-Zr-based amorphous alloy composite material and preparation method and application thereof | |
| CN117047099A (en) | 3D printing niobium alloy and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |