Surface Roughening Technology by Laser Beam for 6061 Aluminum Alloy

Chun Li; Xinwei Du; Baoxian Du; Zichang Zhang; Kangzhi Ma; Ting Li; Liyong Ni; Yibing Zeng

doi:10.3788/CJL231567

Chinese Journal of Lasers, Volume. 51, Issue 16, 1602206(2024)

Surface Roughening Technology by Laser Beam for 6061 Aluminum Alloy

Chun Li^1、*, Xinwei Du¹, Baoxian Du², Zichang Zhang¹, Kangzhi Ma¹, Ting Li¹, Liyong Ni¹, and Yibing Zeng¹

Author Affiliations

¹Department of Surface Engineering, Institute of Aerospace Materials and Processing Technology, Beijing 100076, China

²Office of Research and Development, Institute of Aerospace Materials and Processing Technology, Beijing 100076, China

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Figures & Tables(10)

Fig. 1. Surface state of 6061 aluminum alloy substrate after different times of laser treatment

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Fig. 2. Metallographic photographs and three-dimensional profiles of 6061 aluminum alloy surface after different times of laser treatment. (a)(b) 0 time; (c)(d) 1 time; (e)(f) 3 times; (g)(h) 5 times; (i)(j) 10 times

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Fig. 3. SEM images of 6061 aluminum alloy surface morphology after laser treatment for 1 and 5 times. (a)(b) Scale is 500 μm;

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Fig. 4. Elements distribution scan images scan images in local area of aluminum alloy surface after laser treatment for 5 times

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Fig. 5. Variation of surface roughness $\bar{R}$ _a and R_z of aluminum alloy with laser treatment time. (a) $\bar{R}$ _a variation with laser treatment time; (b) R_z variation with laser treatment time

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Fig. 6. XRD patterns of surface of 6061 aluminum alloy before and after laser treatment for 10 times

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Fig. 7. Test photos of surface wetting angle of typical coatings on 6061 aluminum alloy. (a) TL-W017 (sandblasting); (b) TL-19A (sandblasting); (c) TL-W017 (laser treatment for 5 times); (d) TL-19A (laser treatment for 5 times)

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Fig. 8. Photos of typical coatings adhesion test result. (a) TL37; (b) TL-W017; (c) TL-19A

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Table 1. Process parameters of laser treatment
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Table 1. Process parameters of laser treatment
Parameter Value
Laser output power /% 100
Laser frequency /kHz 80
Pulse width /ns 100
Scanning speed /（mm/s） 500
Standoff distance /mm 190
Scanning size /mm×mm 60×20
Treatment time 1， 3， 5， and 10

Table 2. Wetting angles of typical coatings on 6061 aluminum alloy surface

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Table 2. Wetting angles of typical coatings on 6061 aluminum alloy surface

Treatment	Wetting angle /（°）		Treatment parameter
Treatment	TL-W017	TL-19A	Treatment parameter
Sandblasting	65.9	65.6	Sand particles of 100 mesh and blasting pressure of 0.2 MPa
Laser treatment for 1 time	68.7	65.1	Laser frequency of 80 kHz and pulse width of 100 ns
Laser treatment for 3 times	65.3	58.2
Laser treatment for 5 times	68.5	48.7
Laser treatment for 10 times	73.0	49.6

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Chun Li, Xinwei Du, Baoxian Du, Zichang Zhang, Kangzhi Ma, Ting Li, Liyong Ni, Yibing Zeng. Surface Roughening Technology by Laser Beam for 6061 Aluminum Alloy[J]. Chinese Journal of Lasers, 2024, 51(16): 1602206

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