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High performance high-entropy alloy and processing method thereof

A high-entropy alloy and processing method technology, applied in the field of high-performance alloys, can solve problems such as insufficient strength at room temperature, achieve strong economy, improve performance, and delay exchange transactions

Inactive Publication Date: 2018-05-18
ZHENGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to solve Fe 40.32 mn 39.66 co 9.38 Cr 10.64 Alloy (atomic ratio is Fe 40 mn 40 co 10 Cr 10 ) faces problems such as insufficient strength at room temperature, and coordinates the relationship between strength and plasticity, and provides a high-performance high-entropy alloy and its processing method

Method used

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  • High performance high-entropy alloy and processing method thereof
  • High performance high-entropy alloy and processing method thereof
  • High performance high-entropy alloy and processing method thereof

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Embodiment 1

[0025] A kind of processing method of high-performance high-entropy alloy, described processing method comprises the following steps: according to master alloy (Fe 40.32 mn 39.66 co 9.38 Cr 10.64 ) 99-x Mo 1 C x The nominal composition is batched and smelted to obtain an as-cast alloy with a grain size of about 100-500 μm; wherein, 0

[0026] 1) According to the nominal composition (Fe 40.32 mn 39.66 co 9.38 Cr 10.64 ) 99.25 Mo 1 C 0.75 The composition is batched, the total mass is about 100g, smelted in a vacuum induction furnace, the smelting temperature is 1450-1550 degrees Celsius, preferably 1500 degrees Celsius; the melting time is five minutes, and the cast alloy with a grain size of about 100 μm is obtained;

[0027] 2) Under this method, a single 100g smelting can ensure the uniformity of composition and structure, and the yield strength of the material is about 413MPa, and the tensile strength is about 774MPa, which meets the service requirements ...

Embodiment 2

[0031] 1) According to the nominal composition (Fe 40.32 mn 39.66 co 9.38 Cr 10.64 ) 99 Mo 1 C 1 The composition is batched, the total mass is about 100g, and it is melted in an induction furnace under the protection of argon. The melting temperature is 1450-1550 degrees Celsius, preferably 1500 degrees Celsius; the melting time is five minutes, and the cast state with a grain size of about 100 μm is obtained. alloy;

[0032] 2) Under this method, a single 100g smelting can ensure the uniformity of composition and structure, and the yield strength of the material is about 560MPa, and the tensile strength is about 1024MPa, which meets the service requirements of high-entropy alloys, and can be used directly without subsequent treatment;

[0033] The tensile curve of an ingot of this composition is as figure 1 In x=1, it can be seen that the carbon-free Mo and C-free Fe prepared by the same method 40.32 mn 39.66 co 9.38 Cr 10.64 Compared with alloys, the combination o...

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Abstract

The invention discloses a high performance high-entropy alloy and a processing method thereof. The mother alloy of the high-entropy alloy is (Fe40.32Mn39.66Co9.38Cr10.64)99-xMo1Cx. The alloy is proportioned according to the nominal compositions and is smelted, wherein the content x of doped carbon is greater than zero but less than or equal to 1wt%. The processing method comprises the following steps: S1, proportioning the mother alloy (Fe40.32Mn39.66Co9.38Cr10.64)99-xMo1Cx according to the nominal compositions, wherein x is greater than zero but less than or equal to 1wt%; and S2, putting each component of the mother alloy into an induction furnace to be smelted to obtain the alloy as cast condition, the grain size of which is between about 100[mu]m and 500[mu]m. The high-entropy alloy disclosed by the invention effectively reduces the stacking fault energy of the material, and is easier to induce twin crystals; the relationship between strength and plasticity is coordinated, and thealloy is low in cost and has a high economical benefit.

Description

technical field [0001] The invention belongs to the technical field of high-performance alloys, in particular to a high-performance high-entropy alloy and a processing method thereof. Background technique [0002] High-entropy alloys are a new class of alloys developed on the basis of amorphous alloys. These alloys generally contain five or more alloying elements, and the content of each element is more than 5%. There are no obvious dominant elements, and the structure is generally Single-phase face-centered cubic (FCC) structure or system cubic (BCC) structure, and sometimes a mixed structure of face-centered cubic (FCC) and system cubic (BCC). High entropy alloys with FCC structure generally have high plasticity, thermal stability, wear resistance and corrosion resistance. Since it was proposed, high-entropy alloys with FCC structure have received extensive attention and research, and are considered as a potential structural material with great advantages. [0003] Howev...

Claims

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Application Information

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IPC IPC(8): C22C30/00C22C1/02
Inventor 魏然孙欢李福山陈辰王坦贾晓东杨要轩张航
Owner ZHENGZHOU UNIV
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