Unlock instant, AI-driven research and patent intelligence for your innovation.

Tungsten-based material with solid solution and dispersion strengthening functions and preparation method thereof

A dispersion-strengthening, tungsten-based technology, which is applied in the field of both solid solution and dispersion-strengthened tungsten-based materials and its preparation, can solve the problems of material performance degradation, low Zr diffusion/solution efficiency, grain boundary segregation, etc., to reduce Production cost, improvement of strengthening and toughening effects, improvement of yield and production efficiency

Active Publication Date: 2021-07-20
DALIAN UNIV OF TECH
View PDF6 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a tungsten-based material with both solid solution and dispersion double strengthening effects and its preparation method to solve the problem of low Zr diffusion / solution efficiency and ZrO 2 Grain boundary segregation and the resulting degradation of material properties

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Tungsten-based material with solid solution and dispersion strengthening functions and preparation method thereof
  • Tungsten-based material with solid solution and dispersion strengthening functions and preparation method thereof
  • Tungsten-based material with solid solution and dispersion strengthening functions and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Embodiment 1 (W 99 Zr 1 ) 99.7 Fe 0.3 Alloy preparation

[0021] Step one, Zr 76 Fe 24 Preparation of Master Alloy Amorphous Powder

[0022] Using industrially pure Zr (>99.5%) and Fe (>99.5%) metals as raw materials, the composition of Zr by atomic percentage 76 Fe 24 Conversion, weighing, and alloy preparation; the raw materials are mixed and placed in a water-cooled copper crucible of a non-consumable arc melting furnace, and then vacuumed to about 6×10 -3 Pa, filled with 0.05MPa industrial pure Ar atmosphere for smelting, the arc melting working current is 150A; then the alloy ingot is turned upside down, so that the melting is repeated 4 times to obtain an alloy ingot with uniform composition. Next, crush the alloy ingot and put it into a quartz tube, place the quartz tube in an induction heating coil, and then evacuate to about 1×10 -2 Pa, filled with 0.05MPa commercially pure Ar; using copper roll single roll spin quenching technology, the alloy sample i...

Embodiment 2

[0026] Embodiment 2 (W 95 Zr 5 ) 99.1 Fe 0.9 Alloy preparation

[0027] Step one, Zr 85 Fe 15 Preparation of Master Alloy Amorphous Powder

[0028] Using industrial pure Zr (>99.5%) and Fe (>99.5%) as raw materials, the composition of Zr by atomic percentage 85 Fe 15 Conversion, weighing, and alloy preparation; the raw materials are mixed and placed in a water-cooled copper crucible of a non-consumable arc melting furnace, and then vacuumed to about 6×10 -3 , filled with industrial pure Ar atmosphere of 0.1MPa for smelting, the working current of arc melting is 180A; then the alloy ingot is turned upside down, and the alloy ingot with uniform composition is obtained by repeated melting for 4 times. Next, crush the alloy ingot and put it into a quartz tube, place the quartz tube in an induction heating coil, and then evacuate to about 1×10 -2 Pa, filled with 0.1MPa commercially pure Ar; using copper roll single roll spin quenching technology, the alloy sample is melted...

Embodiment 3

[0032] Embodiment 3 (W 92 Zr 8 ) 97 Fe 3 Alloy preparation

[0033] Step one, Zr 72 Fe 28 Preparation of Master Alloy Amorphous Powder

[0034] Using industrial pure Zr (>99.5%) and Fe (>99.5%) as raw materials, the composition of Zr by atomic percentage 72 Fe 28 Conversion, weighing, and alloy preparation; the raw materials are mixed and placed in a water-cooled copper crucible of a non-consumable arc melting furnace, and then vacuumed to about 6×10 -3 , filled with industrial pure Ar atmosphere of 0.1MPa for smelting, the working current of arc smelting is 150A; then the alloy ingot is turned upside down, and smelting is repeated 4 times in this way to obtain an alloy ingot with uniform composition. Next, crush the alloy ingot and put it into a quartz tube, place the quartz tube in an induction heating coil, and then evacuate to about 1×10 -2 Pa, filled with 0.1MPa commercially pure Ar; using copper roll single roll spin quenching technology, the alloy sample is mel...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Particle sizeaaaaaaaaaa
Login to View More

Abstract

The invention discloses a tungsten-based material with solid solution and dispersion strengthening functions and a preparation method thereof, and belongs to the technical field of powder preparation engineering. The preparation method takes industrially pure W powder and metals Zr and M as raw materials and comprises the following steps that firstly, a ZrM amorphous strip is obtained through an electric arc melting and melt-spinning rapid quenching technology; secondly, the ZrM amorphous strip is ball-milled and powdered, sieved, and mixed with the W powder in proportion to prepare a material; and finally, the material is subjected to ball milling, blank pressing and sintering to obtain the block (W <100-a> Zr ) <100-b> M tungsten-based material. The tungsten-based material comprises elements W, Zr and M, M is one of elements Fe, Co and Ni, a and b are atomic percent, a is more than or equal to 0.5 and less than or equal to 8, and b is more than 0 and less than or equal to 3. According to the material and the method, gaps among W powder particles can be fully filled, and a high-density tungsten-based material sintered body is obtained; the obtained product has solid solution and dispersion dual-strengthening characteristics; and the strengthening and toughening effects of the tungsten-based material are improved, the preparation control process parameters of the material are greatly widened, the production cost of the material is reduced, and the yield and production efficiency of the material are improved.

Description

technical field [0001] The invention relates to a tungsten-based material with both solid solution and dispersion strengthening and a preparation method thereof, belonging to the technical field of powder preparation engineering. Background technique [0002] Because of its high melting point (3410°C), high creep resistance, high sputtering threshold, low tritium retention, and low thermal expansion coefficient, tungsten (W) and its alloys have been widely used in aerospace, nuclear energy engineering and other fields. . For example, W may serve as a divertor and first wall member for a magnetic confinement fusion device facing the plasma material. The ductile-brittle transition temperature of pure W is higher than room temperature, which is not conducive to component processing, and its recrystallization temperature cannot fully meet the high-temperature service requirements, which largely limits the application range of pure W. [0003] Studies have shown that the segreg...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C22C27/04C22C1/10C22C32/00C22C45/10B22D11/06B22F9/04B22F3/105
CPCC22C27/04C22C32/0031C22C45/10B22D11/0611B22F9/04C22C1/10B22F3/105B22F3/1039B22F2009/043
Inventor 王英敏羌建兵杨兵魏明玉
Owner DALIAN UNIV OF TECH