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Manufacturing process of lightweight high-entropy alloy and impeller

A high-entropy alloy and manufacturing process technology, applied in the field of industrial manufacturing, can solve the problems of poor wear resistance and fatigue performance of titanium alloy, poor fluidity of stainless steel casting, complicated and time-consuming preparation process, etc., and achieve good fluidity and no preparation process. Pollution, the effect of simple process

Active Publication Date: 2020-11-24
XIAN TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Existing impellers are mainly made of stainless steel and titanium alloy. Stainless steel casting has poor fluidity, and the preparation process is complicated and time-consuming. Titanium alloy has the characteristics of light weight and corrosion resistance, but the wear resistance and fatigue performance of titanium alloy are poor

Method used

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  • Manufacturing process of lightweight high-entropy alloy and impeller

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Ingredients: select pure metal elements and iron-carbon compounds, according to (Fe 20 co 20 Ni 41 al 19 ) 0.99 C 1 The atomic ratio of the high-entropy alloy is accurately weighed Fe raw material, Co raw material, Ni raw material, Al raw material, FeC raw material, the purity of pure metal elements is greater than 99.9%, and the total weight of the raw materials taken is 3Kg.

[0031] Vacuuming: Put the above raw materials into the melting pool of the crucible, and place pure titanium block in another melting pool.

[0032] Open the circulating water cooling system, close the furnace door of the smelting furnace, open the mechanical pump, pre-extraction valve, and vacuum gauge. When the vacuum is 8.3Pa, open the shut-off valve. When the vacuum reaches 6Pa, open the main pumping valve, the molecular pump power switch and the green start button, and close the pre-pumping valve. When the vacuum in the furnace chamber is 3.0×10 -3 Pa, turn off the red stop button o...

Embodiment 2

[0037] Ingredients: select the above-mentioned pure metal elements and iron-carbon compounds, according to (Fe 20 co 20 Ni 41 al 19 ) 0.99 C 1 The atomic ratio of the high-entropy alloy is accurately weighed Fe raw material, Co raw material, Ni raw material, Al raw material, FeC raw material, the purity of the pure metal element is greater than 99.9%, and the total weight of the raw material taken is 6Kg.

[0038] Vacuuming: Put the above raw materials into the melting pool of the crucible, and place pure titanium block in another melting pool.

[0039] Open the circulating water cooling system, close the furnace door of the smelting furnace, open the mechanical pump, pre-extraction valve, and vacuum gauge. When the vacuum is 8.0Pa, open the shut-off valve. When vacuuming to 5Pa, open the main pumping valve, the molecular pump power switch and the green start button, and close the pre-pumping valve. When the vacuum in the furnace chamber is 2.7×10 ﹣3 Pa, turn off the r...

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Abstract

The invention discloses a light-weight high-entropy alloy and a manufacturing process of an impeller made of the light-weight high-entropy alloys. The molecular formula of the light-weight high-entropy alloy is (Fe20Co20Ni41Al19)0.99C1. The light-weight high-entropy alloy is simple in texture and is an intact and regular layered double-phase eutectic structure with FCC and BCC, the volume fractionof the FCC phase and that of the BCC phase are 59% and 41% respectively, the microhardness is 423HV, the density is 7.05 g / cm<3>, the yield strength at the room temperature is 674 MPa, the breaking strength is 1,425 MPa and the elongation is 19.3%.

Description

【Technical field】 [0001] The invention belongs to the field of industrial manufacturing, and in particular relates to a manufacturing process of a lightweight high-entropy alloy impeller. 【Background technique】 [0002] In recent years, my country's interest disputes with neighboring countries on the issue of maritime boundaries have gradually deepened. In order to ensure that my country's sovereignty and interests are not violated, the research and development of lightweight amphibious armored vehicles has been put on the agenda. Amphibious armored vehicles are amphibious armored vehicles. Since World War II, amphibious armored vehicles have become the preferred armored assault force for amphibious landing operations due to their superior water and land mobility and amphibious survivability. [0003] For amphibious armored vehicles, due to the low padding efficiency of the wheels and tracks, the speed is difficult to meet the needs of modern warfare, and the use of propelle...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C30/00C22C1/02B60F3/00
CPCB60F3/0007B60F3/0061C22C1/02C22C19/03C22C30/00
Inventor 陈建王宇哲吕煜坤上官晓峰赵雪柔颜屹杨小光
Owner XIAN TECH UNIV