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

Nanoscale B2 phase precipitation strengthened TixZrNbAly multi-principal-element alloy and preparation method thereof

A multi-principal alloy and precipitation strengthening technology, which is applied in the field of metal materials, can solve the problems of inability to meet the application requirements of structural materials, high alloy density, and low high-temperature strength, so as to improve application value, shorten the preparation process, and improve room temperature and high temperature. The effect of intensity

Active Publication Date: 2021-06-04
INST OF METAL RESEARCH - CHINESE ACAD OF SCI +1
View PDF5 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The BCC+B2 two-phase refractory alloy developed by the predecessors is mainly based on the continuous B2 phase as the matrix and BCC as the precipitated phase, which leads to the inherent room temperature brittleness of the alloy and cannot meet the application requirements of structural materials.
At the same time, these refractory multi-principal alloys have higher density and lower high temperature strength

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
  • Nanoscale B2 phase precipitation strengthened TixZrNbAly multi-principal-element alloy and preparation method thereof
  • Nanoscale B2 phase precipitation strengthened TixZrNbAly multi-principal-element alloy and preparation method thereof
  • Nanoscale B2 phase precipitation strengthened TixZrNbAly multi-principal-element alloy and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0035] A kind of nanoscale B2 phase precipitation strengthened Ti that one embodiment of the present invention proposes x ZrNbAl y A method for preparing a multi-principal alloy, comprising:

[0036] (1) Preparation of Zr / Nb master alloy ingot: weigh according to the ratio of atomic ratio 1:1, put zirconium raw material and niobium raw material in the crucible, and when using electric arc melting, first pump the vacuum chamber to 10 -4 ~10 -3 Pa, then filled with high-purity argon (volume purity 99.999%), until the vacuum gauge shows 2 × 10 4 ~4×10 4 Pa. Alloy smelting current is 300-500A, smelting for 2-5 minutes each time, after each smelting, turn over the alloy and smelt again, repeat at least 3 times until the alloy composition is uniform, and obtain Zr / Nb intermediate alloy ingot;

[0037] (2) Preparation of Ti / Al master alloy balls: weigh according to the preset distribution ratio, put the titanium raw materials and aluminum raw materials in the crucible, and when ...

Embodiment 1

[0043] Ti proposed in this example 1.5 ZrNbAl 0.3 The preparation method of the multi-principal alloy is weighed according to the preset composition distribution ratio, and the industrial-grade purity Ti: 27.2g, Zr: 34.6g, Nb: 35.2g, Al: 3.1g are weighed, and all raw materials are industrial-grade Purity, the specific steps are as follows:

[0044] (1) Preparation of Zr / Nb master alloy ingot: 34.6g of zirconium and 35.2g of niobium were placed in the crucible, and when arc melting was used, the vacuum chamber was first 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 400A, each smelting is 5 minutes, after each smelting, the alloy is turned over and smelted again, and repeated 5 times until the alloy composition is uniform, and a Zr / Nb intermediate alloy ingot is obtained;

[0045] (2) Preparation of Ti / Al 0.3 Intermediate alloy balls: put 27.2g of titanium and 3.1g of alumi...

Embodiment 2

[0050] Ti proposed in this example 1.5 ZrNbAl 0.5 The preparation method of the multi-principal alloy is weighed according to the preset composition distribution ratio, and the industrial-grade purity Ti: 26.7g, Zr: 33.9g, Nb: 34.5g, Al: 5.0g are weighed, and all raw materials are industrial-grade Purity, the specific steps are as follows:

[0051] (1) Preparation of Zr / Nb master alloy ingot: 33.9g of zirconium and 34.5g of niobium are placed in a crucible, and when arc melting is used, 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 400A, smelting for 2 minutes each time, after each smelting, turn over the alloy and smelt again, repeat 4 times until the alloy composition is uniform, and Zr / Nb intermediate alloy ingot is obtained;

[0052] (2) Preparation of Ti / Al 0.5 Intermediate alloy balls: put 26.7g of titanium and 5.0g of aluminum in a crucibl...

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
yield strengthaaaaaaaaaa
yield strengthaaaaaaaaaa
yield strengthaaaaaaaaaa
Login to View More

Abstract

The invention relates to the technical field of metal materials, in particular to a nanoscale B2 phase precipitation strengthened TixZrNbAly multi-principal-element alloy and a preparation method thereof. The preparation method comprises the following steps that a Zr / Nb intermediate alloy ingot and a Ti / Alx intermediate alloy ball are prepared through smelting; the Zr / Nb intermediate alloy ingot and the Ti / Alx intermediate alloy ball are smelted, and a master alloy ingot is prepared; and the master alloy ingot is heated and melted through electric arc melting, an alloy plate is cast through a copper mold casting method, and the B2 precipitated phase strengthened TixZrNbAly multi-principal-element alloy is obtained. By adding the Al element, a nanoscale B2 precipitated phase is generated, so that the yield strength of the alloy is obviously improved, and meanwhile, the room-temperature plasticity is kept. The TixZrNbAly multi-principal-element alloy is low in cost, short in preparation flow and simple in process, and 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 nanoscale B2 phase precipitation strengthening Ti x ZrNbAl y Multi-principal alloys and methods for their preparation. Background technique [0002] Body-centered cubic (BCC) refractory multi-principal element alloys have excellent strength and high temperature stability, and have great potential application value in the field of aerospace high-temperature structural materials. The coherent precipitation of nanoscale second plays an important role in improving the high-temperature strength of traditional Ni-based superalloys. Drawing on the traditional Ni-based superalloy γ+γ′ coherent strengthening structure, the development of body-centered cubic refractory multi-principal alloys with BCC+B2 structure is of great significance for expanding the field of high-temperature structural materials. Therefore, the development of nano-scale B2 phase precipitation strengtheni...

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 Applications(China)
IPC IPC(8): C22C30/00C22C1/03
CPCC22C30/00C22C1/03C22C27/02C22C14/00Y02P10/25
Inventor 张宏伟庞景宇张海峰朱正旺张龙李宏付华萌王爱民李正坤
Owner INST OF METAL RESEARCH - CHINESE ACAD OF SCI