High-strength and high-plasticity eutectic high-entropy alloy and preparation method thereof

A high-entropy alloy and high-plasticity technology, which is applied in the field of high-strength, high-plasticity eutectic high-entropy alloy and its preparation, can solve the problems of easy segregation, inability to have high strength and high plasticity at the same time, and poor fluidity, so as to achieve difficult element segregation, Improves anti-oxidation performance and improves high temperature stability

Active Publication Date: 2018-10-12
NORTHWESTERN POLYTECHNICAL UNIV
View PDF6 Cites 27 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a high-strength, high-plasticity eutectic high-entropy alloy and a preparation method thereof for existing high-entropy alloys that cannot simultaneously have high strength and high plasticity, easy segregation, and poor flu

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
  • High-strength and high-plasticity eutectic high-entropy alloy and preparation method thereof
  • High-strength and high-plasticity eutectic high-entropy alloy and preparation method thereof
  • High-strength and high-plasticity eutectic high-entropy alloy and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A high-strength and high-plastic eutectic high-entropy alloy, the chemical formula of which is Ni 30 co 30 Fe 10 Cr 10 al 18 W 2 , abbreviated as Ni 30 ; Wherein, the ratio of each element is mole percent.

[0025] A kind of Ni 30 co 30 Fe 10 Cr 10 al 18 W 2 The preparation method of eutectic high-entropy alloy comprises the following steps:

[0026] S1. Ultrasonic cleaning: the Ni, Co, Fe, Cr, Al, W alloy raw materials are mechanically ground to remove oxide scales on the surface of the elements, then placed in different containers and added with alcohol solution, ultrasonically cleaned, and dried after taking out the alcohol to obtain Six raw materials after ultrasonic treatment;

[0027] S2. Ingredients: Weigh 12.89g of Ni, 12.95g of Co, 4.10g of Fe, 3.81g of Cr, 3.56g of Al and 2.69g of W metal raw materials obtained in S1 according to the molar percentage of the eutectic high-entropy alloy and mixed;

[0028] S3: Master alloy smelting: Put the raw ma...

Embodiment 2

[0031] A high-strength and high-plastic eutectic high-entropy alloy, the chemical formula of which is Ni 36 co 24 Fe 10 Cr 10 al 18 W 2 , abbreviated as Ni 36 ; Wherein, the ratio of each element is mole percent.

[0032] The eutectic high-entropy alloy Ni 36 The preparation method is the same as that of Example 1, except that what weighed in S2 is 15.48g of Ni, 10.36g of Co, 4.10g of Fe, 3.81g of Cr, 3.56g of Al and 2.69g of W Metal raw materials.

Embodiment 3

[0034] A high-strength and high-plastic eutectic high-entropy alloy, the chemical formula of which is Ni 40 co 20 Fe 10 Cr 10 al 18 W 2 , abbreviated as Ni 40 ; Wherein, the ratio of each element is mole percent.

[0035] The eutectic high-entropy alloy Ni 40The preparation method is the same as the preparation method of Example 1, except that what weighed in S2 is 17.20g of Ni, 8.63g of Co, 4.10g of Fe, 3.81g of Cr, 3.56g of Al and 2.69g of W Metal raw materials.

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
Tensile strengthaaaaaaaaaa
Login to view more

Abstract

The invention discloses a high-strength and high-plasticity eutectic high-entropy alloy and a preparation method thereof. The high-strength and high-plasticity eutectic high-entropy alloy is preparedfrom the major elements of Ni, Co, Fe, Cr, Al and the trace elements X; the alloy composition is NiaCobFecCrdAleXf, wherein a, b, c, d, e and f represent the molar percentages of the corresponding elements, a+b is greater than or equal to 58 and less than or equal to 62, a is greater than or equal to b, c+d is greater than or equal to 18 and less than or equal to 22, c is greater than or equal tod, e is greater than or equal to 17 and less than or equal to 19, and f is less than or equal to 5.3; and the trace elements X comprise the following elements of W, Nb, Mo, B and C. The preparation method for the eutectic high-entropy alloy comprises the following steps that firstly, the alloying elements of the Ni, the Co, the Fe, the Cr, the Al and the X are descaled and cleaned and are weighedand mixed according to a certain molar ratio, a mother alloy is smelted, and finally suction casting is carried out so as to obtain the eutectic high-entropy alloy. The alloy combines the face-centered cubic phase and the body-centered cubic phase and has the advantages of being high in strength and high in plasticity, the elements such as the Al, the Cr and the W are beneficial to the improvementof the oxidation resistance, the corrosion resistance and the high-temperature stability of the alloy, and the comprehensive performance of the alloy is quite excellent.

Description

technical field [0001] The invention relates to the technical field of metal materials and their preparation, in particular to a high-strength, high-plastic eutectic high-entropy alloy and a preparation method thereof. Background technique [0002] High-entropy alloys are a new class of metal materials composed of a variety of main elements, which have the characteristics of high mixing entropy and severe lattice distortion. High-entropy alloys exhibit a series of excellent properties such as high strength, high hardness, and high radiation resistance, and become potential structural materials in the future, and have broad application prospects in extreme conditions such as aerospace. However, the high-entropy alloys currently studied are mainly single-phase solid solution structures. Among them, the face-centered cubic high-entropy alloy has excellent plasticity but poor strength, and the body-centered cubic high-entropy alloy has good strength but the plasticity is far fro...

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): C22C30/00C22C1/02
CPCC22C1/02C22C19/057C22C19/07C22C30/00
Inventor 王志军吴庆峰李俊杰王锦程
Owner NORTHWESTERN POLYTECHNICAL UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap