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A kind of pearlite type multi-principal element wear-resistant alloy and its preparation method

A wear-resistant alloy and multi-principal element technology, which is applied in the field of pearlite multi-principal wear-resistant alloy and its preparation, can solve the problem that the high-temperature hardness, strength and wear resistance performance cannot be achieved at the same time, corrosion resistance and high temperature resistance Weak performance and other problems, to achieve the effect of improving strength and wear resistance, and preventing layer coarsening

Active Publication Date: 2022-04-26
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although pearlite wear-resistant steel is a good wear-resistant material at room temperature, its high-temperature hardness, strength and wear resistance cannot reach a high level at the same time, and the addition of some metal elements also leads to corrosion resistance and high temperature resistance. weaker

Method used

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  • A kind of pearlite type multi-principal element wear-resistant alloy and its preparation method
  • A kind of pearlite type multi-principal element wear-resistant alloy and its preparation method
  • A kind of pearlite type multi-principal element wear-resistant alloy and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] (1) Alloy design: select the elements, set the output conditions, realize the preliminary design of the alloy based on the genetic algorithm, and determine the mass percentage range of each element in the alloy required for the formation of the pearlite structure in the multi-principal element alloy according to the thermodynamic phase diagram. Fe: 40wt.%, Co: 22wt.%, Ni: 22wt.%, Ti: 16wt.%.

[0030] (2) Vacuum smelting: Put the granular / block raw materials with atomic percentages of 45% iron, 21% cobalt, 22% nickel and 12% titanium (purity greater than 99.99%) into a vacuum induction melting furnace , evacuated to 1×10 -3 Pa, smelting current: 400A, introduce magnetic stirring and then smelt for 1-3 times. After the alloy is completely melted and has the best fluidity, pour it into the mold directly and quickly, and finally cool it into a square ingot with the furnace;

[0031] (3) Homogenization treatment: the ingot is placed in a muffle furnace, vacuumed, filled wit...

Embodiment 2

[0037] (1) Alloy design: select the elements, set the output conditions, realize the preliminary design of the alloy based on the genetic algorithm, and determine the mass percentage range of each element in the alloy required for the formation of the pearlite structure in the multi-principal element alloy according to the thermodynamic phase diagram. Fe: 45wt.%, Co: 25wt.%, Ni: 25wt.%, Ti: 5wt.%.

[0038] (2) Vacuum smelting: Put the granular / block raw materials with atomic percentages of 40% iron, 24% cobalt, 22% nickel and 14% titanium (purity greater than 99.99%) into a vacuum induction melting furnace , vacuumed to 5×10 -3 Pa, smelting current: 300A, introduce magnetic stirring and then smelt for 1-3 times. After the alloy is completely melted and has the best fluidity, pour it into the mold directly and quickly, and finally cool it into a square ingot with the furnace;

[0039] (3) Homogenization treatment: the ingot is placed in a muffle furnace, vacuumed, filled with ...

Embodiment 3

[0043] (1) Alloy design: select the elements, set the output conditions, realize the preliminary design of the alloy based on the genetic algorithm, and determine the mass percentage range of each element in the alloy required for the formation of the pearlite structure in the multi-principal element alloy according to the thermodynamic phase diagram. Fe: 42wt.%, Co: 24wt.%, Ni: 24wt.%, Ti: 10wt.%.

[0044] (2) Vacuum smelting: Put the granular / block raw materials with atomic percentages of 43% iron, 22% cobalt, 22% nickel and 13% titanium (purity greater than 99.99%) into a vacuum induction melting furnace , evacuated to 1×10 -4 Pa, smelting current: 500A, introduce magnetic stirring and then smelt for 1~3 times. After the alloy is completely melted and has the best fluidity, pour it into the mold directly and quickly, and finally cool it into a square ingot with the furnace;

[0045] (3) Homogenization treatment: the ingot is placed in a muffle furnace, vacuumed, filled wit...

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Abstract

The invention discloses a pearlite multi-principal component wear-resistant alloy and a preparation method thereof. The element composition of the alloy is CoNiFeTi, the alloy has a nanosheet pearlite structure, the volume fraction of the pearlite is 80-100%, and the pearlite layer The chip spacing is 10~20nm. Design the CoNiFeTi pearlite multi-principal alloy by genetic algorithm, and adjust the composition to make it undergo eutectoid reaction at a specific temperature, so as to obtain nano-sheet pearlite structure in the multi-principal alloy, and adopt appropriate heat treatment The process regulates the pearlite domain, group and layer spacing, etc., so that the hardness, strength and wear resistance of the alloy are significantly improved. The method proposed by the invention is simple, does not require high equipment, is low in cost, and is easy to be popularized in industrialized production, and the obtained pearlite multi-principal alloy can be used as a substitute product of new bearing steel.

Description

technical field [0001] The invention belongs to the processing and preparation of wear-resistant materials, in particular to a pearlite-type multi-principal element wear-resistant alloy and a preparation method thereof. Background technique [0002] Abrasion is listed as one of the three major failure modes of materials, which not only causes huge waste of energy, but also causes huge losses of equipment, devices, and materials. Therefore, wear-resistant materials are important consumable materials in the manufacturing industry, and are widely used in machinery, metallurgy, electric power, building materials, national defense, ships, railways, coal, chemicals and other fields. Among them, bearings are an important application field of wear-resistant materials. The wear resistance has strict requirements. At present, the main wear-resistant materials include high manganese steel, medium manganese steel, ultra-high manganese steel series, high, medium and low carbon wear-resi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C30/00C22C1/02C22F1/02
CPCC22C30/00C22C1/02C22F1/02
Inventor 孙文文安旭龙刘正迪
Owner SOUTHEAST UNIV