CN113322421A - Amorphous-based composite material and preparation method thereof - Google Patents

Amorphous-based composite material and preparation method thereof Download PDF

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CN113322421A
CN113322421A CN202110593122.6A CN202110593122A CN113322421A CN 113322421 A CN113322421 A CN 113322421A CN 202110593122 A CN202110593122 A CN 202110593122A CN 113322421 A CN113322421 A CN 113322421A
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etm
amorphous
composite material
alloy
oxide
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王英敏
羌建兵
朱颉
潘伟通
张骏峰
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Dalian University of Technology
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    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C45/00—Amorphous alloys
    • C22C45/001—Amorphous alloys with Cu as the major constituent
    • 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
    • C22C1/10—Alloys containing non-metals
    • C22C1/1036—Alloys containing non-metals starting from a melt
    • 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
    • C22C1/11—Making amorphous alloys

Abstract

An amorphous matrix composite material and a preparation method thereof belong to the technical field of new materials. The matrix of the composite material is Cu-ETM amorphous alloy comprising Cu and ETM (early transition metal) elements, and the chemical composition of the atomic percent is Cu100‑a‑bAlaETMbWherein a and b are 0-25, 25-75, and ETM-Zr1‑x‑yHfxTiyX is more than or equal to 0 and less than or equal to 1, and y is more than or equal to 0 and less than 0.5. Firstly, preparing an ETM-O intermediate alloy; secondly, with Cu100‑a‑bAlaETMbThe amorphous matrix comprises ETMO with different volume fractions2Oxide precipitate is taken as a target, the chemical composition of the whole composite material is determined, the step ETM-O intermediate alloy, industrial pure ETM, Cu and Al (which are taken as raw materials are prepared into alloy raw materials, and the alloy raw materials are subjected to non-consumable arc melting to obtain a mixture with uniform componentsGold ingots; finally, the nucleation and growth kinetics of an oxide precipitated phase are regulated and controlled by changing the cooling speed range by utilizing the melt rapid quenching and copper mold suction casting technology, and finally the amorphous-based composite material is obtained. The amorphous-based composite material obtained by the invention is dispersed with nano oxide particles with different densities and sizes, and the precipitate/matrix interface is well combined.

Description

Amorphous-based composite material and preparation method thereof
Technical Field
The invention belongs to the technical field of new materials, and relates to a novel composite material with an amorphous alloy matrix and oxide particles uniformly and dispersedly distributed in the amorphous alloy matrix and a preparation method of the novel composite material.
Background
Amorphous alloys are a class of special alloys with disordered long range and ordered short range in structure, and generally have unique properties such as high strength, high elasticity, high corrosion resistance and the like which are difficult to compare with crystalline alloys. The materials have great application potential in civil and military industries and are concerned by various countries. The countries in the U.S. and the Japan develop earlier practical researches on amorphous alloy and composite materials thereof, and have a large number of patents related to the amorphous alloy. In contrast, the amorphous materials with independent intellectual property rights in China are few, which directly influences the popularization, application and development of the materials in China.
Compared with crystalline alloy materials, the preparation conditions of amorphous alloys are relatively harsh, and high-purity raw materials, high vacuum and high-purity inert gas protective atmosphere are often required. The main reasons are: the low purity raw materials and the low vacuum can introduce impurities and oxygen into the melt to form heterogeneous nucleation particles, which are not beneficial to the formation of amorphous state. Thus, the preparation of amorphous alloys typically requires strict control of the purity of the raw materials and the purity of the protective atmosphere to minimize the content of harmful impurities.
Amorphous alloys have poor room temperature plasticity, which severely affects their use as structural materials. Therefore, people try to introduce a second phase into the amorphous alloy to prepare the amorphous-based composite material so as to achieve the toughening effect. Ceramic materials are often used as reinforcements of composite materials, and at present, carbide and boride ceramic phases such as SiC, ZrC, WC, TiC, TiB and the like are successfully added into Zr-based and Cu-based amorphous alloys, so that the amorphous alloy-based composite material with good room-temperature toughness is developed. Most of the oxide ceramic phase is not wetted with the metal melt, and the specific gravity difference is large, so that the oxide ceramic phase is difficult to be taken as a second phase to be introduced into the alloy melt in the smelting process, and therefore, the amorphous-based composite material with the nano oxide particles dispersed and distributed on the amorphous matrix and good interface combination of the oxide ceramic phase and the amorphous matrix is difficult to obtain.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the technical bottleneck that metal oxide is difficult to be used as an amorphous-based composite material additive is overcome, the amorphous-based composite material with nano oxide second phase dispersed distribution and good oxide/matrix interface combination is developed, and a new path and scheme are provided for the preparation and development of amorphous alloy materials.
In order to achieve the purpose, the invention adopts the technical scheme that:
the amorphous composite material has Cu-ETM amorphous alloy as base body and includes Cu and ETM elements with chemical composition of Cu in atomic percentage100-a-bAlaETMbWherein a and b are 0-25, 25-75, and ETM-Zr1-x-yHfxTiyX is more than or equal to 0 and less than or equal to 1, and y is more than or equal to 0 and less than 0.5; oxide particles with uniform size are dispersed on the matrix. The component proportion of the oxide particles is ETMO2The size and number density of the oxide particles can be adjusted by the preparation process. The particle diameter can be regulated between 5 and 50nm, and when the particle size of the oxide is constant, the number density corresponds to the volume fraction of the oxide in the composite material, and the value can be controlled between 5 and 30 percent.
A preparation method of an amorphous matrix composite material comprises the following steps:
step one, preparing an ETM-O intermediate alloy with the specific gravity close to that of raw materials such as Cu, ETM and the like and good melt wettability so as to overcome and eliminate the problems of poor wettability of the existing oxide particles and metal melts, specific gravity segregation in the smelting process and the like. The method comprises the following specific steps:
1.1) determining the O content proportion of the ETM-O master alloy according to the volume fraction of the oxide precipitated phase required in the target amorphous-based composite material, and converting the O content proportion into weight percentage. Adopts industrial pure ETM (more than 99 percent) and ETMO2(> 99%) as raw material, weighing and preparing ETM-O intermediate alloy.
1.2) mixing the raw materials, placing the mixture in a water-cooled copper crucible of a non-consumable arc melting furnace, vacuumizing to 10Pa, and charging industrial pure Ar atmosphere of 0.01MPa for melting to obtain an ETM-O intermediate alloy ingot with uniform components. The weight loss rate of the alloy before and after smelting is controlled within five per thousand.
Step two, preparing the amorphous matrix composite material:
2.1) with Cu100-a-bAlaETMbThe amorphous matrix comprises ETMO with different volume fractions2Oxide precipitates are taken as targets, and the chemical composition of the whole composite material is determined and converted into weight percentage; crushing the ETM-O intermediate alloy prepared in the step one, and preparing an alloy by taking industrial pure ETM (more than 99%), Cu (more than 99.5%) and Al (more than 99%) as raw materials;
2.2) mixing the alloy raw materials, placing the mixture in a non-consumable electric arc furnace, and obtaining an alloy ingot with uniform components by a non-consumable electric arc melting method under a low vacuum atmosphere;
2.3) utilizing the melt rapid quenching and copper mold suction casting technology, regulating and controlling the nucleation and growth kinetics of an oxide precipitated phase by changing the cooling speed range, and finally obtaining the amorphous-based composite material, wherein nano oxide particles with different densities and sizes are distributed on the amorphous-based composite material in a dispersing way, and the precipitate/matrix interface is well combined. And observing the structure and structure of the oxide dispersion amorphous-based composite material sample by an electron microscope.
Further, the cooling speed range in the step 2.3) is 103～106K/s。
The invention has the beneficial effects that:
note that ETMO2Based on the fact that the intermediate alloy has good mutual fusibility with ETM and high solid solubility of O element in Zr, Hf and Ti metals, the intermediate alloy of the ETM-O combination body with the specific gravity close to that of alloy raw materials and good wettability of alloy melt can be obtained, and the intermediate alloy can be mixed with other pure metals as raw materials, can be configured, smelted and obtained to be an amorphous-based composite material with nano-oxide second phase dispersed and distributed and good combination of precipitate/matrix interface. The method avoids the problems of wettability and specific gravity caused by directly adding oxide as raw material. The preparation process of the material is simple, efficient and controllable, and is easy to realize large-scale production. The invention provides a new idea and technology for preparing the oxide dispersion amorphous alloy based composite material and opens up a new way for the variety and application development of the amorphous alloy material.
Drawings
FIG. 1 shows ZrO in example 12The structure of the dispersed Cu-Zr amorphous-based composite material is as follows: (a) bright field image, (b) electron diffraction pattern.
FIG. 2 shows ZrO in example 22The structure of the dispersed Zr-Cu-Al amorphous matrix composite material is as follows: (a) bright field image, (b) electron diffraction pattern.
Detailed Description
The following describes the ETMO of the present invention in detail2A dispersed Cu-ETM amorphous-based composite material and an embodiment thereof. The concrete preparation process and application of the material are illustrated by taking five typical components as examples.
EXAMPLE 1ZrO2Dispersed Cu-Zr amorphous-based composite material (ETM ═ Zr)
Step one, preparing Zr-O intermediate alloy
With Cu50Zr50ZrO distributed on the amorphous matrix with 30% volume fraction2The precipitate is the target amorphous-based composite material, the atomic percent content of the O component of the ETM-O intermediate alloy is determined to be 35 percent, and the O component is converted into the weight percent. Sponge Zr (> 99%) and ZrO are used2(> 99%) as raw material, weighing and preparing Zr-O intermediate alloy. Mixing the raw materials, placing the mixture into a water-cooled copper crucible of a non-consumable arc melting furnace, vacuumizing to 10Pa, and charging industrial pure Ar atmosphere of 0.01MPa for melting, wherein the working current of arc melting is 100A; and then, turning the alloy ingot up and down, and repeatedly smelting for 3 times to obtain an intermediate alloy ingot with uniform components, wherein the weight loss rate of the alloy before and after smelting is five per thousand.
Step two, preparing the Cu-Zr amorphous-based composite material
With Cu50Zr50The amorphous matrix contains 30% volume fraction ZrO2Oxide precipitates as an object, and Cu as a chemical composition of the entire composite material was determined30Zr44O26And converting it to weight percent Cu30.09Zr63.35O6.57(ii) a Crushing the Zr-O intermediate alloy, and preparing the alloy together with industrial pure Zr (more than 99 percent) and Cu (more than 99.5 percent) as raw materials; mixing, placing in a water-cooled copper crucible of a non-consumable arc melting furnace, vacuumizing to 10Pa, and charging in 0.01MPa industrial pure Ar atmosphere for melting, wherein the working current of arc melting is 100A; and then, turning the alloy ingot up and down, and repeatedly smelting for 3 times to obtain a master alloy ingot with uniform components, wherein the weight loss of the alloy before and after smelting is four thousandth.
Crushing the master alloy ingot and then putting the crushed master alloy ingot into a quartz tube, wherein the nozzle of the quartz tube has the diameter of about 1.0 mm. Placing the quartz tube after charging in an induction heating coil, then vacuumizing to 10Pa, and charging industrial pure Ar of 0.01 MPa; by using a copper roller single-roller rotary quenching technology, an alloy sample is melted and sprayed onto a rotating water-cooling copper roller with the surface linear velocity of 70m/s, and a strip sample with the thickness of 30 mu m is obtained. Further electron microscope observations showed that: the strip sample shows bright texture characteristics of the oxide particle dispersion amorphous matrix composite material, and the oxide is simple cubic ZrO2The particle size is 5nm, and the particles are uniformly dispersed and distributed on the Cu-Zr amorphous matrix; such ZrO2ZrO in dispersed Cu-Zr amorphous-based composite material2Is about 30% by volume; as shown in fig. 1.
EXAMPLE 2ZrO2Dispersed Zr-Cu-Al amorphous composite material (ETM ═ Zr)
Step one, preparing Zr-O intermediate alloy
With Cu35Al15Zr50ZrO is distributed on the amorphous matrix with the volume fraction of 15%2The precipitate is the target amorphous-based composite material, and the atomic percent content of the O component of the ETM-O intermediate alloy is determined to be 20 percent and converted into the weight percent. Sponge Zr (> 99%) and ZrO are used2(> 99%) as raw material, weighing and preparing Zr-O intermediate alloy. Mixing the raw materials, placing the mixture into a water-cooled copper crucible of a non-consumable arc melting furnace, vacuumizing to 10Pa, and charging industrial pure Ar atmosphere of 0.01MPa for melting, wherein the working current of arc melting is 100A; then turning the alloy ingot upside down, and repeatedly smelting in the way 3And secondly, obtaining an intermediate alloy ingot with uniform components, wherein the weight loss of the alloy before and after smelting is four per thousand.
Step two, preparation of Zr-Cu-Al amorphous-based composite material
With Cu35Al15Zr50The amorphous matrix contains 15% volume fraction ZrO2Oxide precipitates as an object, and Cu as a chemical composition of the entire composite material was determined27Al12Zr46O15And converting it to weight percent Cu26.49Al5Zr64.80O3.71(ii) a Crushing the Zr-O intermediate alloy, and preparing the alloy together with industrial pure Zr (more than 99%), Cu (more than 99.5%) and Al (more than 99%) as raw materials; mixing, placing in a water-cooled copper crucible of a non-consumable arc melting furnace, vacuumizing to 10Pa, and charging in 0.01MPa industrial pure Ar atmosphere for melting, wherein the working current of arc melting is 100A; and then, turning the alloy ingot up and down, and repeatedly smelting for 3 times to obtain a master alloy ingot with uniform components, wherein the weight loss of the alloy before and after smelting is three thousandth.
Then putting the master alloy ingot into a water-cooled copper crucible, and obtaining the alloy rod with the diameter phi 2 by a water-cooled copper mold suction casting technology. The working atmosphere and the working current are the same as the smelting of the master alloy ingot. Further electron microscope observations showed that: the alloy rod sample has bright texture characteristics of the oxide particle dispersion amorphous-based composite material, and the oxide is simple cubic ZrO2The grain size is 20nm, and the grains are uniformly dispersed and distributed on the Zr-Cu-Al amorphous matrix; such ZrO2ZrO in dispersed Zr-Cu-Al amorphous-based composite material2Is about 15% by volume; as shown in fig. 2.
Example 3HfO2Dispersed Hf-Cu amorphous composite material (ETM ═ Hf)
Step one, preparing Hf-O intermediate alloy
With CuHf2HfO with 10% volume fraction is distributed on the amorphous matrix2The precipitate is the target amorphous-based composite material, the atomic percent content of the O component of the intermediate alloy of the ETM-O combination body is determined to be 25 percent, and the O component is converted into the weight percent. Using sponge Hf (> 99%) and HfO2(＞99%) as raw material, weighing and preparing Hf-O intermediate alloy. Mixing the raw materials, placing the mixture into a water-cooled copper crucible of a non-consumable arc melting furnace, vacuumizing to 10Pa, and charging industrial pure Ar atmosphere of 0.01MPa for melting, wherein the working current of arc melting is 100A; and then, turning the alloy ingot up and down, and repeatedly smelting for 3 times to obtain an intermediate alloy ingot with uniform components, wherein the weight loss rate of the alloy before and after smelting is four per thousand.
Step two, preparation of Hf-Cu amorphous-based composite material
With CuHf2The amorphous matrix contains 10% volume fraction HfO2Oxide precipitates as an object, and Cu as a chemical composition of the entire composite material was determined25Hf58O17And converting it to weight percent Cu13.01Hf84.77O2.23(ii) a Crushing the Hf-O intermediate alloy, and preparing the alloy together with industrial pure Hf (more than 99%) and Cu (more than 99.5%) as raw materials; mixing, placing in a water-cooled copper crucible of a non-consumable arc melting furnace, vacuumizing to 10Pa, and charging in 0.01MPa industrial pure Ar atmosphere for melting, wherein the working current of arc melting is 100A; then the alloy ingot is turned over up and down, and the alloy ingot is repeatedly smelted for 3 times to obtain a master alloy ingot with uniform components, and the weight loss of the alloy before and after smelting is two thousandth.
Crushing the master alloy ingot and then putting the crushed master alloy ingot into a quartz tube, wherein the nozzle of the quartz tube has the diameter of about 1.0 mm. Placing the quartz tube after charging in an induction heating coil, then vacuumizing to 10Pa, and charging industrial pure Ar of 0.01 MPa; by using a copper roller single-roller rotary quenching technology, an alloy sample is melted and sprayed onto a rotating water-cooling copper roller with the surface linear velocity of 40m/s, and a strip sample with the thickness of 60 mu m is obtained. Further electron microscope observations showed that: the strip sample showed distinct texture characteristics of the oxide particle dispersed amorphous matrix composite, the oxide being simple cubic HfO2The particle size is 10nm, and the particles are uniformly dispersed and distributed on the Hf-Cu amorphous base; such HfO2HfO in dispersed Hf-Cu amorphous-based composite material2Is about 10% by volume.
Example 4(Zr, Ti) O2Dispersed Cu-Zr-Ti amorphous matrix composite (ETM ═ Zr)2Ti)
Step one, preparing Hf-O combination intermediate alloy
With Cu4Zr2The Ti amorphous matrix is distributed with 20 percent of (Zr, Ti) O by volume fraction2The precipitate is the target amorphous-based composite material, the atomic percent content of the O component of the intermediate alloy of the ETM-O combination body is determined to be 30 percent, and the O component is converted into the weight percent. Adopts industrial pure Zr (more than 99 percent), Ti (more than 99 percent) and ZrO2(> 99%) and TiO2(> 99 percent) is used as a raw material, and the Zr-Ti-O intermediate alloy is weighed and prepared. Mixing the raw materials, placing the mixture into a water-cooled copper crucible of a non-consumable arc melting furnace, vacuumizing to 10Pa, and charging industrial pure Ar atmosphere of 0.01MPa for melting, wherein the working current of arc melting is 100A; and then, turning the alloy ingot up and down, and repeatedly smelting for 3 times to obtain an intermediate alloy ingot with uniform components, wherein the weight loss rate of the alloy before and after smelting is five per thousand.
Step two, preparation of Cu-Zr-Ti amorphous-based composite material
With Cu4Zr2The Ti amorphous matrix contains 20% volume fraction (Zr, Ti) O2Oxide precipitates as an object, and Cu as a chemical composition of the entire composite material was determined44Zr27Ti11O18And converting it to weight percent Cu46.03Zr40.55Ti8.67O4.74(ii) a Crushing the Zr-Ti-O combined intermediate alloy, and preparing the alloy together with industrial pure Zr (more than 99%), Ti (more than 99%) and Cu (more than 99.5%) as raw materials; mixing, placing in a water-cooled copper crucible of a non-consumable arc melting furnace, vacuumizing to 10Pa, and charging in 0.01MPa industrial pure Ar atmosphere for melting, wherein the working current of arc melting is 100A; and then, turning the alloy ingot up and down, and repeatedly smelting for 3 times to obtain a master alloy ingot with uniform components, wherein the weight loss of the alloy before and after smelting is three thousandth.
Crushing the master alloy ingot and then putting the crushed master alloy ingot into a quartz tube, wherein the nozzle of the quartz tube has the diameter of about 1.0 mm. Placing the quartz tube after charging in an induction heating coil, then vacuumizing to 10Pa, and charging industrial pure Ar of 0.01 MPa; melting alloy sample by using copper roller single roller rotary quenching technology and spraying the alloy sample toA strip sample having a thickness of 100 μm was obtained on a rotating water-cooled copper roll having a surface linear velocity of 25 m/s. Further electron microscope observations showed that: the sample shows bright texture characteristics of the oxide particle dispersion amorphous matrix composite material, and the oxide is simple cubic ZrO2And TiO2The particle size is 15nm, and the particles are uniformly dispersed and distributed on the Cu-Zr-Ti amorphous matrix; such (Zr, Ti) O2(Zr, Ti) O in dispersed Cu-Zr-Ti amorphous-based composite material2Is about 20% by volume.
Example 5HfO2Dispersed Hf-Cu-Al amorphous composite material (ETM ═ Hf)
Step one, preparing Hf-O intermediate alloy
With Cu2AlHf6The volume fraction HfO of 10% is distributed on the amorphous matrix2The precipitate is the target amorphous-based composite material, and the atomic percent content of the O component of the ETM-O intermediate alloy is determined to be 20 percent and converted into the weight percent. Using sponge Hf (> 99%) and HfO2(> 99%) as raw material, weighing and preparing Hf-O intermediate alloy. Mixing the raw materials, placing the mixture into a water-cooled copper crucible of a non-consumable arc melting furnace, vacuumizing to 10Pa, and charging industrial pure Ar atmosphere of 0.01MPa for melting, wherein the working current of arc melting is 100A; then the alloy ingot is turned over up and down, and the smelting is repeated for 3 times in this way, so that an intermediate alloy ingot with uniform components is obtained, and the weight loss of the alloy before and after the smelting is four thousandth.
Step two, preparation of Hf-Cu-Al amorphous-based composite material
With Cu2AlHf6The amorphous matrix contains 10% volume fraction HfO2Oxide precipitates as an object, and Cu as a chemical composition of the entire composite material was determined6Al3Hf19O2And converting it to weight percent Cu9.81Al2.08Hf87.28O0.82(ii) a Crushing the Hf-O intermediate alloy, and preparing an alloy together with industrial pure Hf (more than 99%), Cu (more than 99.5%) and Al (more than 99%) as raw materials; mixing, placing in a water-cooled copper crucible of a non-consumable arc melting furnace, vacuumizing to 10Pa, charging into 0.01MPa industrial pure Ar atmosphere for melting, and performing arc meltingThe flow was 100A; and then, turning the alloy ingot up and down, and repeatedly smelting for 3 times to obtain a master alloy ingot with uniform components, wherein the weight loss of the alloy before and after smelting is three thousandth.
Then putting the master alloy ingot into a water-cooled copper crucible, and obtaining the alloy rod with the diameter phi 2 by a water-cooled copper mold suction casting technology. The working atmosphere and the working current are the same as the smelting of the master alloy ingot. Further electron microscope observations showed that: the alloy rod sample has bright texture characteristics of the oxide particle dispersion amorphous-based composite material, and the oxide is simple cubic HfO2The particle size is 20nm, and the particles are uniformly dispersed and distributed on the Hf-Cu-Al amorphous substrate; such HfO2HfO in dispersed Hf-Cu-Al amorphous-based composite material2Is about 10% by volume.
The above-mentioned embodiments only express the embodiments of the present invention, but not should be understood as the limitation of the scope of the invention patent, it should be noted that, for those skilled in the art, many variations and modifications can be made without departing from the concept of the present invention, and these all fall into the protection scope of the present invention.

Claims (5)

1. An amorphous-based composite material, characterized by: the matrix of the composite material is Cu-ETM amorphous alloy, comprises Cu and ETM elements, and has the chemical composition of Cu in atomic percent100-a-bAlaETMbWherein a and b are 0-25, 25-75, and ETM-Zr1-x-yHfxTiy，0≤x≤1，0≤y＜0.5；
Oxide particles with uniform size are dispersed on the substrate, and the component proportion of the oxide particles is ETMO2The size and number density of the oxide particles can be adjusted by the preparation process.
2. An amorphous-based composite material as claimed in claim 1, wherein: the diameter of the oxide particles can be regulated and controlled between 5 and 50nm, and when the size of the oxide particles is constant, the number density of the oxide particles corresponds to the volume fraction of the oxide in the composite material, and the value of the oxide particles can be controlled between 5 and 30 percent.
3. A method for preparing an amorphous-based composite material according to claim 1 or 2, comprising the steps of:
step one, preparing an ETM-O intermediate alloy:
1.1) determining the O content proportion in the ETM-O intermediate alloy according to the volume fraction of an oxide precipitated phase required in the target amorphous-based composite material, and converting the O content proportion into weight percentage; adopts industrial pure ETM and ETMO2Weighing and preparing an ETM-O intermediate alloy as a raw material;
1.2) mixing the raw materials, putting the mixture into a water-cooled copper crucible of a non-consumable arc melting furnace, vacuumizing the water-cooled copper crucible, and filling the mixture into an industrial pure Ar atmosphere for melting to obtain an ETM-O intermediate alloy ingot with uniform components; controlling the alloy weight loss rate before and after smelting within five thousandths;
step two, preparing the amorphous matrix composite material:
2.1) with Cu100-a-bAlaETMbThe amorphous matrix comprises ETMO with different volume fractions2Oxide precipitates are taken as targets, and the chemical composition of the whole composite material is determined and converted into weight percentage; crushing the ETM-O intermediate alloy prepared in the step one, and taking the crushed ETM-O intermediate alloy and industrial pure ETM, Cu and Al as raw materials to prepare alloy raw materials;
2.2) mixing the alloy raw materials, placing the mixture in a non-consumable electric arc furnace, and obtaining an alloy ingot with uniform components by a non-consumable electric arc melting method under a low vacuum atmosphere;
2.3) utilizing the melt rapid quenching and copper mold suction casting technology, regulating and controlling the nucleation and growth kinetics of an oxide precipitated phase by changing the cooling speed range, and finally obtaining the amorphous-based composite material, wherein nano oxide particles with different densities and sizes are distributed on the amorphous-based composite material in a dispersing way, and the precipitate/matrix interface is well combined.
4. The method for preparing an amorphous composite material as claimed in claim 3, wherein the cooling rate in the step 2.3) is in the range of 103～106K/s。
5. The method for preparing an amorphous composite material according to claim 3, wherein in the step 1.2), during the melting process, the vacuum is pumped to 10Pa, and the industrial pure Ar atmosphere of 0.01MPa is filled.
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Publication number Priority date Publication date Assignee Title
CN114985749A (en) * 2022-06-06 2022-09-02 核工业西南物理研究院 Oxide-amorphous composite powder for ODS-W alloy and preparation method thereof
CN114985749B (en) * 2022-06-06 2023-04-07 核工业西南物理研究院 Oxide-amorphous composite powder for ODS-W alloy and preparation method thereof

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