The Influence of Laser Parameters on the Coloring Effect and Microstructure of Stainless Steel Surface

4th International Conference on Manufacturing, Material and Metallurgical Engineering

Ma, Xiaolei^1 ; Guo, Jian^1 ; Si, Xuekang^1 ; Zhao, Jingnan^1

Mechanical Engineering College, Tianjin University of Science and Technology, Tianjin

300222, China^1

关键词: Laser fluences;    Laser parameters;    Microstructure formation;    Process parameters;    Scanning intervals;    Scanning speed;    Stainless steel surface;    SUS 304 stainless steel;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/538/1/012024/pdf
DOI  :  10.1088/1757-899X/538/1/012024

来源: IOP

【 摘 要 】

Nanosecond pulsed, green (532 nm) laser was used to irradiate SUS 304 stainless steel. Black, brown, gray, pink and other colors were obtained on the surface of polished stainless steel by adjusting the three process parameters: scanning interval (Ls), scanning speed (v) and defocusing distance (Dd). Scanning electron microscope (SEM) showed that there were three kinds of structures on the surface of stainless steel: columnar protrusions, droplets and cracks. The results indicated that the three process parameters affected the surface coloring effect and the microstructure formation of stainless steel by changing the total accumulated laser fluence in the scanning area.