Laser surface modification of duplex stainless steel 2205 to modify the surface roughness

Y., Arsyad and Linggam, R. and Quazi, M. M. and Aiman, Mohd Halil and M., Ishak and A. Q., Zaifuddin and Qaban, Abdullah (2021) Laser surface modification of duplex stainless steel 2205 to modify the surface roughness. International Journal of Automotive and Mechanical Engineering (IJAME), 18 (2). 8695 -8703. ISSN 2180-1606. (Published)

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Laser surface modification is an emerging process that can produce texture on a work surface and effectively enhance surface topography while altering surface roughness. Laser surface modification is a sensitive process that depends on various laser processing parameters such as power, scanning speed, hatching distance. The significance of this work is to examine the influence of hatching distance on the surface characteristic of 2205 duplex stainless steel samples. The surface transformation and variation of the surface roughness properties of the materials were examined. The hatching distance was varied from 0.1 to 0.005 mm. Results indicate that, as the hatch spacing decreases, the overlap of laser track increases, thereby resulting in a decrease of surface roughness. Meanwhile, with the increase of hatch distance, the clear overlay tracks were transformed to irregular wavy surface. The best hatch distance parameter obtained was 100 μm that resulted in the highest roughness of 8.45 μm. Experimental results illustrate that, when the optimum hatch distance of 100 μm was adopted, the polished smooth surface of 2205 duplex stainless steel with initial average roughness value of 0.19 μm increased by 42 times of the polished surface roughness. A strong correlation between hatching distance and roughness was established in 2205 duplex stainless steel. High depth of the altered surface topography and increased roughness were linked to higher levels of hatching distance.

Item Type: Article
Additional Information: Indexed by Scopus
Uncontrolled Keywords: Laser surface modification; Duplex stainless steel; Laser hatching distance; Surface roughness
Subjects: T Technology > TJ Mechanical engineering and machinery
Faculty/Division: Institute of Postgraduate Studies
Faculty of Mechanical and Automotive Engineering Technology
Depositing User: Mrs Norsaini Abdul Samat
Date Deposited: 10 Feb 2022 02:14
Last Modified: 10 Feb 2022 02:14
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