Mechanical Behaviour Research On Aluminum Alloy With Biomimetic Coupling Surfaces Processed By Laser

Aluminum and its alloys is indispensable to our life material, aluminum alloy has manygood features, such as small density, good conductivity, corrosion resistance, high strength.Aluminum and its alloy can be divided into deformation aluminum alloy and casting ofaluminum alloy in processing mode; Aluminum alloy is widely used in automotive,aerospace and materials on ships,which greatly promote the development of aluminumindustry, therefore, how to improve the performance of aluminum and its alloys in recentyears become an important research topic for the materials of workers.The bionic coupling technology is a kind of effective new means to improve material.After a long period of evolution, living things gradually adapted to the evolution principle ofthe survival of nature, therefore, many theories inspired on itself in our life. Pangolin canprevent itself from the injury of the friction and wear although they often shuttle the rock;Deep sea shells form the hard shells through own non-smooth. According to this kind ofinspiration, we put some of the good qualities of biological body and transplant them in thematerial surface, gradually developing into the bionic coupling preparation technology. Theso-called "coupling" is to connect two systems through interaction, aluminum alloy laserbionic coupling technology is that use of laser technology and interaction on the surface ofthe aluminum alloy, through aluminum alloy surface quickly fused to simulate the creaturesin the nature of non-smooth surface, thus to achieve the purpose of optimization of materialperformance.This paper mainly studies deformation of6082aluminum alloy after laser treatment andform bionic coupling arrangement of non-smooth surface. We can create the coupling shapesand different units through laser parameters change. In order to further explore the changesin mechanical properties after bionic coupling treatment for the aluminum alloy, we studythe effect of microstructure zone changes under different laser parameters, the change of unitof width, depth, hardness under different laser parameters. Research results show thataluminum alloy through laser biomimetic coupling treatment has better tensile propertiesthan that without biomimetic coupling treatment, and biomimetic units have much largerhardness than the aluminum alloy matrix. With laser current, impulse increasing, the width, depth of units becomes larger; with scanning speed increasing,and the width, depth andhardness of units becomes smaller. By observing the microstructure of aluminum alloy,found the organization of unit has been obviously refined, which is the reason for increasingof unit hardness. In addition, because punctuate units and dam, grid units in the aluminumalloy matrix, to prevent dislocation movement in the aluminum alloy, which is the reason forimproving tensile property of bionic coupling aluminum alloy.