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

Loaded phase transition type nbzrtitaal x High-entropy alloys and their preparation methods and applications

A high-entropy alloy and phase-change technology, which is applied in the field of loaded phase-change NbZrTiTaAlx high-entropy alloys, can solve the problems that brittle materials cannot withstand high-speed flight overload, and non-brittle materials cannot be fully broken, and cannot satisfy the plasticity of materials, etc. The effect of different plasticity requirements of materials, high-density and high-strength mechanical properties, high-speed bearing and impact crushing improvement

Active Publication Date: 2019-10-11
NAT UNIV OF DEFENSE TECH
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the existing high-entropy alloys cannot simultaneously solve the problems that brittle materials cannot withstand high-speed flight overload and non-brittle materials cannot be fully broken after high-speed impact, and cannot meet the different requirements of energetic structural materials for material plasticity in different service stages

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
  • Loaded phase transition type nbzrtitaal <sub>x</sub> High-entropy alloys and their preparation methods and applications
  • Loaded phase transition type nbzrtitaal <sub>x</sub> High-entropy alloys and their preparation methods and applications
  • Loaded phase transition type nbzrtitaal <sub>x</sub> High-entropy alloys and their preparation methods and applications

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] The NbZrTiTaAl of this embodiment x The high-entropy alloy (NbZrTiTa high-entropy alloy) is composed of Nb, Zr, Ti and Ta elements, and the molar ratio of Nb, Zr, Ti and Ta is 1:1:1:1.

[0054] The NbZrTiTaAl of this embodiment x The preparation method of high entropy alloy comprises the following steps:

[0055] (1) Remove the surface scale of Nb, Zr, Ti and Ta metallurgical raw materials by mechanical means, and then accurately weigh the ratio according to the molar ratio of 1:1:1:1 (weighing with an electronic precision balance of 1 / 10,000) , the purity of each metallurgical raw material is higher than 99.9%, and then ultrasonically cleaned in industrial ethanol for 30 minutes for use in smelting alloys. The alloy composition is shown in Table 1.

[0056] (2) Use a conventional non-consumable vacuum electric arc furnace to smelt the alloy. When smelting, put the prepared metallurgical raw materials into the water-cooled copper crucible in order of melting point fro...

Embodiment 2

[0062] The NbZrTiTaAl of this embodiment x High entropy alloys (NbZrTiTaAl 0.1 ) preparation method is basically the same as the steps of Example 1, the only difference is that in step (1), the molar ratio of Ti, Zr, Nb, Ta and Al elements is 1:1:1:1:0.1, the alloy composition See Table 1. In step (2), the smelting current is 250A-650A, the current is gradually controlled to increase to 500A during smelting, and the current is increased to 650A after melting. Repeat the alloy melting process 8 times.

Embodiment 3

[0064] The NbZrTiTaAl of this embodiment x High entropy alloys (NbZrTiTaAl 0.2 ) preparation method is basically the same as the steps of Example 1, the only difference is that in step (1), the molar ratio of Ti, Zr, Nb, Ta and Al elements is 1:1:1:1:0.2, and the alloy composition See Table 1. In step (2), the smelting current is 250A-620A, the current is gradually controlled to increase to 500A during smelting, and the current is increased to 620A after melting. Repeat the alloy melting process 9 times.

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
densityaaaaaaaaaa
compressive strengthaaaaaaaaaa
tensile strength at breakaaaaaaaaaa
Login to View More

Abstract

The invention discloses a loaded phase-change NbZrTiTaAl<x> high-entropy alloy, and a preparation method and applications thereof. The loaded phase-change NbZrTiTaAl<x> high-entropy alloy is mainly composed of elements including Nb, Zr, Ti, Ta, and Al at a molar ratio of a:b:c:d:x, and unavoidable impurity elements, wherein a, b, c, and d are independently used for representing random values selected from [0.98, 1.02], x ranges from 0 to 0.3. The preparation method comprises following steps: the metallurgy raw materials are subjected to electric arc melting at the above molar ratio at argon atmosphere, wherein melting current is controlled to be 250 to 700A, after melting down, the current is increased to be 600A or higher, and then arc blowout is carried out. The loaded phase-change NbZrTiTaAl<x> high-entropy alloy is high in intensity, strength, and plasticity, possesses excellent energy release characteristics, and can be applied in energetic structure materials.

Description

technical field [0001] The invention belongs to the field of metal materials and their preparation, in particular to a supported phase transformation type NbZrTiTaAl x High entropy alloys, their preparation methods and applications. Background technique [0002] Energetic structural materials, also known as energetic metal materials or reactive metal materials, refer to the combination of one or more metals in a certain process to form multifunctional reactive materials with excellent mechanical properties. Energetic structural materials have the characteristics of the integration of structure and energy, and have the dual characteristics of strength and energy release. When hitting and penetrating the target at high speed, under the strong impact load, there will be a secondary reaction to release energy between its own components or between components and the environment, and chemical energy will be added to the kinetic energy to strike the target. Explosion damage. Exi...

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): C22C30/00C22C1/02C22B9/20
Inventor 唐宇李顺白书欣张虹叶益聪王睿鑫
Owner NAT UNIV OF DEFENSE TECH
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com