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

A kind of b-doped tizrnb multi-principal alloy and preparation method thereof

A multi-principal alloy and alloy technology, applied in the field of metal materials, can solve the problems of increasing material costs and achieve the effects of reducing grain size, low alloying cost, and short preparation process

Active Publication Date: 2021-05-18
INST OF METAL RESEARCH - CHINESE ACAD OF SCI
View PDF5 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Previous efforts to improve the properties of BCC refractory multi-principal alloys mainly focused on changing the bulk structure material itself, increasing its strength by adding Mo and W, and using precious metal elements such as Hf and Ta to improve its plasticity. The alloying method greatly increases the cost of the material

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
  • A kind of b-doped tizrnb multi-principal alloy and preparation method thereof
  • A kind of b-doped tizrnb multi-principal alloy and preparation method thereof
  • A kind of b-doped tizrnb multi-principal alloy and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] The preparation method of the B200-TiZrNb multi-principal alloy proposed by an embodiment of the present invention:

[0051] (1) Preparation of Zr / Nb master alloy ingot: Weigh according to the preset composition distribution ratio, respectively weigh Ti: 20.7g, Zr: 39.2g, Nb: 40.1g, 0.06g TiB with industrial grade purity 2 , where all raw materials are industrial-grade purity; 39.2g zirconium and 40.1g niobium are placed in a crucible, and in an inert atmosphere, when using arc melting, the vacuum chamber is pre-pumped to 10 -4 Pa, then filled with high-purity argon (volume purity 99.999%), until the vacuum gauge shows 4 × 10 4 Pa. Alloy smelting current is 500A, smelting for 5 minutes each time, after each smelting, turn over the alloy and smelt again, repeat at least 5 times until the alloy composition is uniform, and obtain Zr / Nb intermediate alloy ingot;

[0052] (2) Preparation of Ti intermediate alloy balls: 20.7g of titanium is placed in a crucible, and in an i...

Embodiment 2

[0059] The preparation method of the B500-TiZrNb multi-principal alloy proposed by an embodiment of the present invention:

[0060] (1) Preparation of Zr / Nb master alloy ingot: Weigh according to the preset composition ratio, respectively weigh Ti: 20.7g, Zr: 39.2g, Nb: 40.1g, 0.16g TiB with industrial grade purity 2 , where all raw materials are industrial-grade purity; 39.2g zirconium and 40.1g niobium are placed in a crucible, and in an inert atmosphere, when using arc melting, the vacuum chamber is pre-pumped to 10 -3 Pa, then filled with high-purity argon (volume purity 99.999%), until the vacuum gauge shows 4 × 10 4 Pa. Alloy smelting current is 300A, smelting for 2 minutes each time, after each smelting, turn over the alloy and smelt again, repeat at least 5 times until the alloy composition is uniform, and obtain Zr / Nb intermediate alloy ingot;

[0061] (2) Preparation of Ti intermediate alloy balls: 20.7g of titanium is placed in a crucible, and in an inert atmosphe...

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
yield strengthaaaaaaaaaa
Login to View More

Abstract

The invention relates to the technical field of metal materials, in particular to a B-doped TiZrNb multi-principal alloy and a preparation method thereof. The method prepares Zr / Nb master alloy ingot and prepares Ti master alloy ball by smelting; TiB 2 The powder is wrapped and compacted with Nb foil, smelted and mixed with Zr / Nb master alloy ingot evenly, then smelted with Ti master alloy ball to prepare master alloy ingot; the master alloy ingot is heated and melted by electric arc melting, and cast into alloy by copper mold casting method Sheet material: cold-rolling the alloy sheet material, determining the amount of deformation and rolling direction, and obtaining B-doped TiZrNb multi-principal element alloy through annealing treatment. The invention utilizes the doping of B element to significantly reduce the crystal grain size of the material, and part B is solid-dissolved in the matrix to produce obvious synergistic growth of strong plasticity. Moreover, the alloying cost is low, the preparation process is short, and the process is simple, so that it has higher application value in the field of aerospace high-temperature structural materials.

Description

technical field [0001] The invention relates to the technical field of metal materials, in particular to a B-doped TiZrNb multi-principal alloy and a preparation method thereof. Background technique [0002] Body-centered cubic (BCC) refractory multi-principal alloys have excellent strength and high temperature stability, and have great potential application value in the field of high temperature resistant structural materials in the aerospace field. However, the intrinsic characteristics of poor plasticity at room temperature greatly reduce the potential application value of BCC refractory multi-principal alloys. Therefore, further improving the intrinsic plasticity of BCC refractory multi-principal alloys through composition design and preparation process optimization is of great significance for its application in the aerospace field. [0003] Previous efforts to improve the properties of BCC refractory multi-principal alloys mainly focused on changing the bulk structure...

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
Patent Type & Authority Patents(China)
IPC IPC(8): C22C30/00C22C1/03C22F1/18
CPCC22C1/03C22C27/02C22C30/00C22F1/18
Inventor 张宏伟庞景宇张海峰朱正旺李宏付华萌张龙王爱民李正坤
Owner INST OF METAL RESEARCH - CHINESE ACAD OF SCI