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Method for predicting surface hardness of laser textured aluminum alloy

A technology of aluminum alloy surface and surface hardness, which is applied in laser welding equipment, testing material hardness, metal processing equipment, etc., can solve the problems of not considering the influence of material friction performance, and not establishing the mapping relationship of laser processing process parameters, etc., to achieve improvement Effect of laser texturing aluminum alloy surface on service performance

Active Publication Date: 2021-01-08
DALIAN UNIV OF TECH
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Problems solved by technology

However, this method only considers the influence of laser-textured surface micro-topography on the friction performance, and does not consider the influence of the substrate surface hardening caused by the direct laser-target interaction on the friction performance of the material, and does not establish the relationship between laser processing parameters and texture The mapping relationship between the surface hardness of the structure has great limitations

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  • Method for predicting surface hardness of laser textured aluminum alloy
  • Method for predicting surface hardness of laser textured aluminum alloy
  • Method for predicting surface hardness of laser textured aluminum alloy

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Embodiment Construction

[0026] The specific implementation manner of the present invention will be described in detail in conjunction with the technical scheme and the accompanying drawings.

[0027] In the process of laser surface texturing, the direct interaction between the laser and the target in a short time and in a small area causes the material to melt and solidify rapidly, resulting in work hardening, which affects the tribological properties and fatigue strength of the laser textured material surface. In view of the fact that the laser processing parameters directly affect the hardness of the textured surface, and the hardness plays a crucial role in the tribological properties of the laser textured surface. Aiming at the limitations and defects of the existing technology, a method for predicting the surface hardness of laser-textured aluminum alloys was invented. Based on the central composite test design method, the laser-textured aluminum alloy surface processing experiments were carried ...

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Abstract

The invention discloses a method for predicting the surface hardness of laser textured aluminum alloy, belongs to the technical field of high-performance surface non-traditional machining, and relatesto a method for predicting the surface hardness of the laser textured aluminum alloy. According to the method, a laser surface texture processing experiment is carried out based on a central composite experiment design method, a hardness prediction model is established by using a response surface method according to an aluminum alloy laser texture surface hardness measurement value, an aluminum alloy laser texture surface hardness value is predicted, and an influence rule of key process parameters on the hardness of a laser textured material is obtained; and the interaction between the process parameters are determined. The method can accurately and reliably predict the surface hardness of the laser textured aluminum alloy, can be effectively applied to manufacturing high-performance laser surface textures by selecting proper laser processing technological parameters, and has important practical application significance for improving the surface service performance of the laser textured aluminum alloy.

Description

technical field [0001] The invention belongs to the technical field of high-performance surface special processing, and relates to a method for predicting the surface hardness of a laser-textured aluminum alloy. Background technique [0002] Aluminum alloy has excellent properties such as low density, high specific strength, fatigue resistance, and corrosion resistance. It is an ideal material for manufacturing critical structural components in engineering fields such as automobiles, ships, and aerospace. However, the wear resistance is poor, and the friction and wear on the surface of the material can easily lead to reduced reliability or even failure of components, which severely limits the practical application of aluminum alloys under friction conditions. Preparation of surface texture on the surface of the material can achieve the effect of reducing friction and anti-wear, so as to achieve the purpose of improving the tribological properties of the material. Among them...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/11G06F17/18G01N3/40B23K26/352
CPCG06F17/11G06F17/18G01N3/40B23K26/355
Inventor 贾振元叶涛马建伟刘巍曹兴坤周子淇
Owner DALIAN UNIV OF TECH
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