Effect Of Materials Coupling Element On The Tensile Properties Of Biomimetic Coupled Laser Processed Steels

Modern industrial society puts forward higher requirements to materialperformance, with rapid development of science and technology, service environmentof high-speed train antenna and other mechanical structure is becoming more andmore harsh, the problem of insufficient structure steel performance is more and moreprominent。Traditional means of strengthen are generally considered and easy to causewaste. Combining bionic coupling theory with the technology of laser surfacetreatment technology can improve the tensile properties of the metal materials. Thereinforcement of grid units on the surface of laser bionic coupling material is the mainfactor of improvement of the tensile properties. When material coupling elementchanged, the tensile properties of materials is also changing. The mechanism ofdifferent material coupling element on the tensile properties of bionic coupling laserremelting material is different. Material coupling element includes hardness gradientbetween substrate and units, material size, carbon and alloy element content, etc.Tensile test, analysis of microhardness and microstructure and calculation of partialdistortion are used to study material coupling element on the tensile properties ofbionic coupling laser processing materials.Through the analysis of the microstructure, microhardness and tensile propertiesof the laser bionic coupling samples, the study illustrates that, compared withuntreated original materials, the bionic coupling samples with different hardnessgradient show different improvements of tensile properties: the increase of hardnessgradient brings the greater improvement of strength and less improvement of theelongation. Different thickness of the laser bionic coupling processing sample alsoshow different tensile properties, the increase of thickness benefits to the raise ofplastic materials. With different carbon and alloy element content of bionic couplinglaser processing material, the tensile properties is also different: the higher of thecarbon content benefits to the raise of strength, the higher content of alloy elements benefits to the raise of plastic materials.