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High-entropy alloy coating material with high wear resistance

A high-entropy alloy and coating material technology, which is applied in the direction of metal material coating technology, coating, and energy efficiency improvement, can solve the problems of inability to apply, prepare high-entropy alloy coatings, and inability to carry out large-scale production, and achieve Meet performance requirements, reduce production costs, improve hardness and wear resistance

Pending Publication Date: 2022-06-03
SHANDONG AGRICULTURAL UNIVERSITY
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Problems solved by technology

"Selective Laser Melting Forming Al 1.8 CrCuFeNi 2 Research on the Microstructure and Properties of High-Entropy Alloys" (Master's thesis, Kong Dan) uses selective laser melting to form high-entropy alloys, but selective laser melting is a method for forming metal parts, which cannot be applied to the preparation of high-entropy alloy coatings on substrates. more incapable of mass production

Method used

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  • High-entropy alloy coating material with high wear resistance
  • High-entropy alloy coating material with high wear resistance
  • High-entropy alloy coating material with high wear resistance

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Embodiment

[0050] Example: Preparation of high wear-resistant high-entropy alloy coating

[0051] 1) According to the content of Al, Cr, Cu, Fe and Ni in the coating composition, according to the mass percentage of Al 14.41%, Cr 15.41%, Cu18.84%, Fe 16.55%, Ni 34.79%, it is prepared and smelted into an alloy melt , Prepare alloy powder by gas atomization method, atomization temperature is about 1500 ℃, atomization pressure is about 4.5MPa, equipment model YC2017-0062# vacuum air atomization equipment. This powder has good fluidity, uniform distribution of elements, and excellent physical properties. Add TiC powder, use YC2019-0061# vacuum ball mill mixer to mix powder under vacuum condition for 36h, the rotation speed is 3000r / min, to form Al with TiC mass fraction of 20% 1.8 CrCuFeNi 2 +TiC powder;

[0052] 2) Put the mixed alloy powder into a dryer for drying, the heating rate is 4°C / min, and dry for 1 hour to obtain dry powder. The purpose of drying is to remove the residual moistu...

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Abstract

The invention discloses a TiC reinforced high-entropy alloy coating material with high wear resistance. The TiC reinforced high-entropy alloy coating material comprises high-entropy alloy powder and 20wt% of TiC powder, the high-entropy alloy material comprises the following components in percentage by weight: 14.41% of Al, 15.41% of Cr, 18.84% of Cu, 16.55% of Fe and 34.79% of Ni. The method for preparing the high-entropy alloy coating by using the material through laser cladding comprises the following steps: preparing high-entropy alloy powder from the high-entropy alloy coating material through a gas atomization method, adding TiC powder, and carrying out ball milling and powder mixing; and uniformly mixed alloy powder is conveyed to the surface of the base body through a powder feeder, and a cladding coating combined with a base body material is obtained through laser cladding. The hardness and wear resistance of the material are improved by changing the content of TiC through the laser cladding technology, the performance requirements of key wear-resistant parts of agricultural machinery are met, and the material can be widely applied to high-end agricultural machinery.

Description

technical field [0001] The invention relates to the technical field of metal alloy material coatings, in particular to a laser cladding high-entropy alloy coating material with high wear resistance. Background technique [0002] Unlike traditional alloys which have one or two main elements, high-entropy alloys (HEAs) are alloys that contain multiple main alloying elements, which are not based on the main components, but are composed of five or more equimolar or nearly equimolar ratios. It is composed of more main elements, and the concentration of each element cannot be less than 5% and more than 35%. The structure of HEA is usually composed of simple face-centered cubic (FCC), body-centered cubic (BCC), and hexagonal closed (HCP) solid solution phase. and FCC, BCC or HCP mixtures instead of intermetallics and other complex structures. High-entropy alloy is a new type of metal material with comprehensive and excellent properties. It is significantly better than conventional...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C30/02C23C24/10B22F9/08
CPCC22C30/02C23C24/103B22F9/082B22F2009/0824B22F2009/0844Y02P10/25
Inventor 郭晶刘程浩张晶晶车旭
Owner SHANDONG AGRICULTURAL UNIVERSITY
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