Optimization of Laser Processing Parameters and Their Effect on Penetration Depth and Surface Roughness of Biomimetic Units on the Surface of 3Cr2W8V Steel
Biomimetic coupling surface is a recent development in surface science of materials. One of the important methods to achieve this surface is to manufacture large numbers of structural units by certain techniques, arranging them regularly on the surface layer of materials to form the biomimetic structure. The penetration depth and the surface roughness of units are two crucial factors that affect strongly the properties of materials. In this paper, a YAG pulsed laser with varied parameters (electrical current 200 A to 300 A, pulse duration 5 ms to 15 ms, frequency 4 Hz to 10 Hz and scanning speed 0.24 mnvs-1 to 0.72 mms-1) was used to fabricate these units on the surface of 3Cr2W8V die steel. The penetration depth and surface roughness of the units were investigated based on orthogonal experimental design. To maximize the penetration depth and minimize the surface roughness, the range analysis and subsequently overall balance method were adopted to identify the most significant factor and level. Meanwhile the most preferable combination of the laser processing parameters was selected. The effect of laser processing parameters on the penetration depth and surface morphology of units was analyzed. The interrelationship among the processing parameters, the penetration depth and the surface roughness was discussed.
biomimetic surface experimental optimization laser processing parameters penetration depth surface roughness 3Cr2W8V die steel
Zhihui Zhang Luquan Ren Ti Zhou Zhiwu Han Hong Zhou Li Chen Yu Zhao
Key Laboratory of Bionic Engineering,Jilin University,Changchun 130022 P.R. China School of Mechanical Science and Engineering,Jilin University,Changchun 130022 P.R. China Key Laboratory of Bionic Engineering,Jilin University, Changchun 130022 P.R. China Key Laboratory of Automobile Materials,Jilin University,Changchun 130022 P.R. China
国际会议
The 3rd International Conference of Bionic Engineering(第三届国际仿生工程会议ICBE10)
珠海
英文
67-76
2010-09-14（万方平台首次上网日期，不代表论文的发表时间）