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

A kind of high-entropy alloy and its preparation method and compression performance testing method

A high-entropy alloy and high-energy ball milling technology, applied in the field of high-entropy alloys, can solve problems such as not meeting the requirements, and achieve the effects of uniform organization, face-centered cubic structure, and enhanced solid solution strengthening.

Active Publication Date: 2021-10-08
SOUTH UNIVERSITY OF SCIENCE AND TECHNOLOGY OF CHINA
View PDF11 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the mechanical properties of high-entropy alloys can be improved to a certain extent through the above methods, they have not yet met the requirements for practical applications.

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 high-entropy alloy and its preparation method and compression performance testing method
  • A kind of high-entropy alloy and its preparation method and compression performance testing method
  • A kind of high-entropy alloy and its preparation method and compression performance testing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0113] The invention provides a high-entropy alloy, the high-entropy alloy is CoCr(FeNi) 1.5 W 0.5 , the content of each component in molar percentage is:

[0114]

[0115] The CoCr(FeNi) that present embodiment provides 1.5 W 0.5 The preparation method of alloy comprises the steps:

[0116] (1) In a glove box where argon exists, weigh 18.2% Co powder, 18.2% Cr powder, 27.25% Fe powder, 27.25% Ni powder and 9.1% W powder by mole percentage and mix them , continue to use SPEX8000D high-energy ball milling at 1300rpm in argon for 9 hours to obtain the product after ball milling, in which the particle size of Co powder is 1.2mm, the particle size of Cr powder is 1.2mm, the particle size of Fe powder is 1.2mm, and the particle size of Fe powder is 1.2mm. diameter is 1.2mm, the particle diameter of W powder is 1.2mm, the particle diameter of Hf powder is 1.2mm, and the purity of Co, Cr, Fe, Ni and W metal powder is all 99.9%, and the ball milling beads of described high-ener...

Embodiment 2

[0124] This embodiment provides a kind of high entropy alloy, and described high entropy alloy is CoCr(FeNi) 1.5 f 0.3 , the preparation method is to replace the molar percentage ratio of the metal raw material with CoCr(FeNi) 1.5 f 0.3 Except the content proportioning, all the other are identical with embodiment 1, and its compressibility test method is identical with embodiment 1.

Embodiment 3

[0126]This embodiment provides a kind of high entropy alloy, and described high entropy alloy is CoCr(FeNi) 1.5 f 0.3 W 0.5 , the preparation method is to replace the molar percentage ratio of the metal raw material with CoCr(FeNi) 1.5 f 0.3 W 0.5 Except the content proportioning, all the other are identical with embodiment 1, and its compressibility test method is identical with embodiment 1.

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 diameteraaaaaaaaaa
particle diameteraaaaaaaaaa
diameteraaaaaaaaaa
Login to View More

Abstract

The invention provides a high-entropy alloy, the high-entropy alloy includes a certain content of Co, Cr, Fe and Ni, and W element and / or Hf element, wherein the W and / or Hf element can strengthen the mechanical properties of the high-entropy alloy , so that the high-entropy alloy has good plasticity and high strength at the same time; the present invention also provides a preparation method of the high-entropy alloy, the method is by a certain proportion of Co, Cr, Fe and Ni, and W and / or Hf element Ball milling after mixing and discharge plasma sintering after ball milling can not only produce a high-entropy alloy with uniform structure and good mechanical properties, but also the method has simple process and short production process, and has good promotion value.

Description

technical field [0001] The invention relates to the technical field of high-entropy alloys, in particular to a high-entropy alloy, a preparation method thereof, and a compression performance testing method. Background technique [0002] Different from traditional alloy materials, high-entropy alloys (HEAs) have multiple components. Because of their uniform structure and unique comprehensive properties, they have attracted widespread attention from scholars since their discovery in 2004. For alloy materials, there are three main crystal structures formed by the arrangement of atoms: face-centered cubic (FCC), body-centered cubic (BCC) and hexagonal close-packed (HCP). [0003] At present, there are few high-entropy alloys with HCP structure type, and the research focus is mainly on HEAs with FCC and BCC structures. However, in the research process, the balance of plasticity and strength is a very important issue, which greatly limits the application of HEAs. HEAs with FCC s...

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): C22C30/00C22C1/04G01N3/08G01N1/28
CPCC22C1/04C22C30/00G01N1/28G01N3/08
Inventor 任富增黄志坤朱明余成卓
Owner SOUTH UNIVERSITY OF SCIENCE AND TECHNOLOGY OF CHINA