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Metal material toughening treatment method

A metal material, toughening treatment technology, applied in the direction of metal material coating process, coating, solid-state diffusion coating, etc., can solve the problems of inability to obtain strength and plastic toughness, and achieve improved surface quality, high efficiency, and quenching deformation small effect

Inactive Publication Date: 2018-03-13
XIAN AERONAUTICAL POLYTECHNIC INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the most widely used surface modification technologies include laser surface modification, nitriding, carburizing, spraying, vapor deposition and other methods, but these methods usually make the surface strength and plastic toughness of materials show a trend of trade-off. A good match between strength and ductility cannot be obtained

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A method for toughening metal materials, comprising the steps of:

[0033] Step 1. Grinding, polishing, cleaning and drying the surface of the steel material;

[0034] Step 2. Selectively strengthen and toughen the pretreated steel material with a high-power laser beam, and obtain a heterogeneous isomorphic reinforcement phase on the surface of the substrate material; the reinforcement phase is in the form of lines, particles or other states on the substrate, Its distribution area is pre-planned according to performance requirements and processing requirements;

[0035] Step 3. Carrying out boronizing treatment on the surface of the iron and steel material that has completed the selective strengthening and toughening treatment; specifically includes the following steps:

[0036] Step 3.1, each raw material is weighed according to the following mass percentage: boron carbide 25~45%, Ti 2 AlC 2 4-8%, cerium chloride 0.4-0.6%, silicon dioxide 0.3-0.7%, the rest is wate...

Embodiment 2

[0043] A method for toughening metal materials, comprising the steps of:

[0044] Step 1. Grinding, polishing, cleaning and drying the surface of the aluminum alloy material;

[0045] Step 2. Selectively strengthen and toughen the pretreated aluminum alloy material by electron beam or ion beam, and obtain a heterogeneous isomorphic reinforcement phase on the surface of the matrix material; the reinforcement phase is in the form of lines, particles or other forms on the matrix. State, its distribution area is pre-planned according to performance requirements and processing requirements;

[0046] Step 3. Carrying out boronizing treatment on the surface of the aluminum alloy material that has completed the selective strengthening and toughening treatment; specifically includes the following steps:

[0047] Step 3.1, each raw material is weighed according to the following mass percentage: boron carbide 25~45%, Ti 2 AlC 2 4-8%, cerium chloride 0.4-0.6%, silicon dioxide 0.3-0.7%...

Embodiment 3

[0054] A method for toughening metal materials, comprising the steps of:

[0055] Step 1. Grinding, polishing, cleaning and drying the titanium alloy surface;

[0056] Step 2. Selectively strengthen and toughen the pretreated titanium alloy material through a high-power laser beam, and obtain a heterogeneous isomorphic reinforcement phase on the surface of the substrate material; the reinforcement phase is in the form of lines, particles or other states on the substrate , its distribution area is pre-planned according to performance requirements and processing requirements;

[0057] Step 3, performing boronizing treatment on the surface of the titanium alloy material that has completed the selective strengthening and toughening treatment; specifically includes the following steps:

[0058] Step 3.1, weighing each raw material according to the following mass percentages: boron carbide 25-45%, Ti2AlC2 4-8%, cerium chloride 0.4-0.6%, silicon dioxide 0.3-0.7%, and the rest is wat...

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Abstract

The invention discloses a metal material toughening treatment method comprising the following steps that grinding, polishing, washing and drying pretreatment are conducted on the surface of metal material; selective-area strengthening and toughening treatment is conducted on the pretreated metal material through a high-power laser beam or an electron beam or an ion beam, and a heterogeneous isomerism type reinforcement phase is obtained on the surface of a base material; boriding treatment is conducted on the surface of the metal material obtained after selective-area strengthening and toughening treatment; magnetic field nitriding treatment is conducted on the surface of the boronized metal material; then low-energy laser shot blasting treatment is conducted on the surface obtained aftermagnetic field nitriding; and then magnetic field quenching is conducted on the surface obtained after low-energy laser shot blasting treatment, and the flat high-strength-toughness surface is obtained. Through the metal material toughening treatment method, strength and toughness of the surface of the metal material can be improved significantly, service life of the metal material is prolonged, and the needs of practical application are met.

Description

technical field [0001] The invention belongs to the technical field of metal material processing methods, and relates to a metal material toughening processing method. Background technique [0002] The failure of metal parts often originates from its surface, such as corrosion, wear, fatigue and other damages all start or occur on the surface. Therefore, improving surface properties has become an important method to prevent component failure and prolong its service life. Surface modification technology is an effective means to improve the surface properties of materials. It achieves the purpose of improving the surface properties of materials by improving the composition and microstructure of the material surface. At present, the most widely used surface modification technologies include laser surface modification, nitriding, carburizing, spraying, vapor deposition and other methods, but these methods usually make the surface strength and plastic toughness of materials show...

Claims

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Application Information

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IPC IPC(8): C21D10/00C23C8/42C23C8/24C21D1/04C21D1/18
CPCC21D10/005C21D1/04C21D1/18C21D10/00C23C8/24C23C8/42
Inventor 马丽
Owner XIAN AERONAUTICAL POLYTECHNIC INST
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