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A high-damping high-strength high-entropy alloy material with strong corrosion resistance and its preparation method

A high-entropy alloy and high damping technology, which is applied in the field of high-entropy alloys to achieve the effect of refining grains, increasing the number, and improving corrosion resistance

Active Publication Date: 2022-04-29
SOUTHWEST JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The first object of the present invention: to propose a high-damping high-strength high-entropy alloy material (Fe-Mn-Cr-Co quaternary dual-phase high-entropy alloy material) with strong corrosion resistance to solve the problem of traditional damping in the prior art The damping performance, mechanical properties and corrosion resistance of alloys need to be improved urgently

Method used

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  • A high-damping high-strength high-entropy alloy material with strong corrosion resistance and its preparation method
  • A high-damping high-strength high-entropy alloy material with strong corrosion resistance and its preparation method
  • A high-damping high-strength high-entropy alloy material with strong corrosion resistance and its preparation method

Examples

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Embodiment 1

[0038] This example presents a high-damping high-strength high-entropy alloy material with strong corrosion resistance and its preparation method.

[0039] The high-entropy alloy material is prepared from manganese, chromium, cobalt, and iron as metal raw materials, and the atomic percentages of manganese, chromium, cobalt, and iron in the metal raw materials are respectively 20% of manganese, 15% of chromium, and 5% of cobalt , Iron 60%. The high-entropy alloy material has a two-phase coexistence crystal structure consisting of an austenite phase (γ) of a face-centered cubic structure (FCC) and a martensite phase (ε) of a hexagonal close-packed structure (HCP). figure 1 Optical microscope images of the alloy materials prepared for this example.

[0040] The method for preparing the high-damping high-strength high-entropy alloy material with strong corrosion resistance includes the following steps:

[0041]S1. Weigh manganese particles, chromium particles, cobalt particles, ...

Embodiment 2

[0051] This example presents a high-damping high-strength high-entropy alloy material with strong corrosion resistance and its preparation method.

[0052] The high-entropy alloy material is prepared from manganese, chromium, cobalt, and iron as metal raw materials, and the atomic percentages of manganese, chromium, cobalt, and iron in the metal raw materials are respectively 20% of manganese, 15% of chromium, and 10% of cobalt , Iron 55%. The crystal structure of the high-entropy alloy material is a two-phase coexistence crystal structure composed of an austenite phase (γ) with a face-centered cubic structure (FCC) and a martensite phase (ε) with a hexagonal close-packed structure (HCP). figure 2 Optical microscope images of the alloy materials prepared for this example.

[0053] The method for preparing the high-damping high-strength high-entropy alloy material with strong corrosion resistance includes the following steps:

[0054] S1. Weigh manganese particles, chromium ...

Embodiment 3

[0064] This example presents a high-damping high-strength high-entropy alloy material with strong corrosion resistance and its preparation method.

[0065] The high-entropy alloy material is prepared from manganese, chromium, cobalt, and iron as metal raw materials, and the atomic percentages of manganese, chromium, cobalt, and iron in the metal raw materials are respectively 20% of manganese, 15% of chromium, and 15% of cobalt , Iron 50%. The crystal structure of the high-entropy alloy material is a two-phase coexistence crystal structure composed of an austenite phase (γ) with a face-centered cubic structure (FCC) and a martensite phase (ε) with a hexagonal close-packed structure (HCP). image 3 Optical microscope images of the alloy materials prepared for this example.

[0066] The method for preparing the high-damping high-strength high-entropy alloy material with strong corrosion resistance includes the following steps:

[0067] S1. Weigh manganese particles, chromium p...

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Abstract

The invention provides a high-damping high-strength high-entropy alloy material with strong corrosion resistance and a preparation method thereof. The high-entropy alloy material is prepared from manganese, chromium, cobalt, and iron as metal raw materials, and the atomic percentages of manganese, chromium, cobalt, and iron in the metal raw materials are respectively 20% of manganese, 15% of chromium, and 5% of cobalt ~20%, the balance is iron. The preparation method of the high-entropy alloy material comprises the steps of: weighing manganese particles, chromium particles, cobalt particles, and iron particles according to the atomic percentage content of manganese, chromium, cobalt, and iron in the metal raw materials of the high-entropy alloy material; Good manganese particles, chromium particles, cobalt particles, and iron particles are put into a vacuum induction furnace, and the vacuum induction furnace is evacuated, and repeatedly flipped and smelted under a protective gas to obtain an alloy liquid; the obtained alloy liquid is processed in a vacuum induction furnace Insulation treatment: casting the alloy liquid after insulated to obtain an alloy ingot. The high-entropy alloy material provided by the invention simultaneously has excellent damping performance, mechanical performance and corrosion resistance performance.

Description

technical field [0001] The invention relates to a high-damping high-strength high-entropy alloy material with strong corrosion resistance and a preparation method thereof, belonging to the technical field of high-entropy alloys. Background technique [0002] With the development of modern science and technology, the control of vibration, shock and noise has increasingly become a complex and urgent problem. Therefore, the research on vibration and noise reduction technology has attracted the attention of many departments, especially in rail transportation, aerospace , precision instruments and other fields. In addition, the rapid development of weapons and equipment also puts forward more stringent requirements for materials; according to statistics, about two-thirds of rocket and missile failures are related to vibration and noise. Damping alloys came into being under such conditions. Damping alloy refers to a functional material that can absorb vibration mechanical energy...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C38/30C22C38/38C22C33/04
CPCC22C38/30C22C38/38C22C33/04
Inventor 徐轶罗涛
Owner SOUTHWEST JIAOTONG UNIV
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