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In-situ non-crystallizing modification method for surface of metal material

A metal material, amorphization technology, applied in the direction of metal material coating process, coating, etc., can solve the problems that it is difficult to obtain a completely amorphous coating, the interface between the coating and the substrate is difficult to control, etc., to achieve increased thickness, Strong interfacial bonding and reduced interfacial stress

Inactive Publication Date: 2016-10-12
常熟市大地机械铸造厂
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this method can produce a thicker amorphous coating, it is difficult to obtain a completely amorphous coating, and the interface between the coating and the substrate is difficult to control

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] S1. Polish the surface of 45 steel with sandpaper, and clean the surface with alcohol;

[0026] S2, choose 45 steel and Fe 42.5 Cr 16 Mo 16.5 B 9 C 16 matching system of amorphous alloys, and according to Fe 42.5 Cr 16 Mo 16.5 B 9 C 16 Amorphous alloy composition ratio Cr, Mo, B and C elemental element powders except the main element Fe of 45 steel, the average particle diameter of the powder is 30 μm, 100 μm, 15 μm and 10 μm;

[0027] S3. Mechanically mixing the prepared Cr, Mo, B and C elemental element powders to obtain uniformly mixed powders;

[0028] S4, pre-place the mixed powder on the surface of 45 steel;

[0029] S5, using continuous CO 2 Laser scan the 45 steel with pre-mixed powder, the laser power is 1.5kW, the scanning speed is 50mm / s, the overlap rate is 20%, the protective gas is argon, so that the mixed powder and the surface layer of 45 steel are melted and mixed to form an amorphous alloy chemical reaction to obtain an amorphous alloy surf...

Embodiment 2

[0032] S1. Polish the surface of the AZ91D magnesium alloy with sandpaper, and clean the surface with alcohol;

[0033] S2. Select AZ91D magnesium alloy and Mg 86.5 Ni 7.5 Y 6 matching system of amorphous alloys, and according to Mg 86.5 Ni 7.5 Y 6 Amorphous alloy composition ratio of Ni and Y elemental element powders except AZ91D magnesium alloy main element Mg, the average particle diameter of the powder is 15 μm and 75 μm;

[0034] S3. Mechanically mixing the prepared Ni and Y elemental element powders to obtain uniformly mixed powders;

[0035] S4, pre-place the mixed powder on the surface of the AZ91D magnesium alloy;

[0036] S5. Use continuous Nd:YAG laser to scan the AZ91D magnesium alloy with preset mixed powder, the laser power is 0.5kW, the scanning speed is 10mm / s, the overlap rate is 30%, and the protective gas is argon, so that the mixed powder and AZ91D magnesium The alloy surface layer is melted and mixed and undergoes an amorphous alloying reaction to ...

Embodiment 3

[0039] S1, the surface of Monel400 nickel alloy is polished with sandpaper, and the surface is cleaned with alcohol;

[0040] S2, choose Monel400 nickel alloy and Ni 58 Ti 15 Zr 18 Si 3 sn 2 Nb 4 matching system of amorphous alloys, and according to Ni 58 Ti 15 Zr 18 Si 3 sn 2 Nb 4 Amorphous alloy composition ratio Ti, Zr, Si, Sn and Nb elemental element powders except Monel400 nickel alloy main element Ni, the average particle diameter of the powder is 30μm, 65μm, 50nm, 10μm and 48μm;

[0041]S3. Mechanically mixing the prepared Ti, Zr, Si, Sn and Nb elemental element powders to obtain uniformly mixed powders;

[0042] S4, pre-place the mixed powder on the surface of Monel400 nickel alloy;

[0043] S5, using continuous CO 2 Laser scan the Monel400 nickel alloy with pre-mixed powder, the laser power is 3kW, the scanning speed is 100mm / s, the overlap rate is 50%, and the protective gas is argon, so that the mixed powder and the surface layer of Monel400 nickel allo...

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Abstract

The invention belongs to the technical field of modification of surfaces of metal materials, and discloses an in-situ non-crystallizing modification method for the surface of a metal material. The method comprises the steps that amorphous alloy components matched with components of a metal matrix material are selected based on the components of the metal matrix material; then, required simple-substance element powder except main elements of a metal matrix is matched according to the amorphous alloy components; after being mixed, the element powder is preplaced on the surface of the metal matrix; laser is adopted to directly irradiate the mixed powder and the metal matrix to melt the mixed powder and the metal matrix and mix the melts; and an amorphous alloy is generated through the in-situ alloying reaction of the mixed element powder and the main elements of the metal matrix under the condition of quick cooling, and an amorphous alloy surface is prepared. According to the method, the interfacial stress of the amorphous alloy surface and the metal matrix is effectively reduced, the thickness of the amorphous alloy surface is increased, and the surface performance of the metal material is remarkably improved; and the amorphous alloy surface prepared through the method is different from an amorphous alloy coating prepared through a traditional method, the amorphous alloy surface is generated through the in-situ alloying reaction on the surface of the metal matrix, the interface bonding is high, and the performance is excellent.

Description

technical field [0001] The invention belongs to the technical field of metal material surface modification, and in particular relates to an in-situ amorphization modification method of the metal material surface. Background technique [0002] Surface failure is a common form of failure for critical metal components, so the service life of a component is closely related to its surface properties. Surface modification is an important means to improve the surface properties of metal materials, which can improve the ability of the surface of metal materials to resist load, inhibit the occurrence of surface failure, and prolong the service life. Laser surface treatment is one of the important surface modification technologies, which has been widely used in various fields to achieve surface strengthening of metal parts. [0003] Amorphous alloys have long-range disordered and short-range ordered atomic arrangement structures, and exhibit excellent physical and chemical properties...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C24/10
CPCC23C24/103C23C24/106
Inventor 崔承云夏传达崔熙贵阴冠超方翠彭希超陆施海周建忠
Owner 常熟市大地机械铸造厂
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