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

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)...

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Bibliographic Details
Published in:IOP conference series. Materials Science and Engineering 2019-05, Vol.538 (1), p.12024
Main Authors: Ma, Xiaolei, Guo, Jian, Si, Xuekang, Zhao, Jingnan
Format: Article
Language:English
Subjects:
Coloring
Defocusing
Electron microscopes
Fluence
Lasers
Microstructure
Nanosecond pulses
Process parameters
Stainless steel
Stainless steels
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Summary: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.
ISSN:1757-8981
1757-899X
DOI:10.1088/1757-899X/538/1/012024