Effect of Surface Pretreatment on Interfacial Bonding of Ti6Al4V Coating Prepared by Supersonic Laser Deposition (Invited)

Jianhua Yao; Bo Li; Qunli Zhang; Yaofeng Hu; Jiatao Jiang; Qiwei Song; Jianjun Wang

doi:10.3788/LOP232685

Laser & Optoelectronics Progress, Volume. 61, Issue 1, 0114004(2024)

Effect of Surface Pretreatment on Interfacial Bonding of Ti6Al4V Coating Prepared by Supersonic Laser Deposition (Invited)

Jianhua Yao^1,2、*, Bo Li^1,2, Qunli Zhang^1,2, Yaofeng Hu^1,2, Jiatao Jiang^1,2, Qiwei Song^1,2, and Jianjun Wang^1,2

Author Affiliations

¹Institute of Laser Advanced Manufacturing, Zhejiang University of Technology, Hangzhou 310023, Zhejiang, China

²College of Mechanical Engineering, Zhejiang University of Technology, Hangzhou 310023, Zhejiang, China

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Figures & Tables(13)

Fig. 1. Morphologies of Ti6Al4V powder and substrate. (a) Micro-morphology of Ti6Al4V powder; (b) macro-morphology of Ti6Al4V substrate with different pretreatments

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Fig. 2. Computational models of Ti6Al4V particle impacting Ti6Al4V substrates. (a) Smooth surface; (b) rough surface

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Fig. 3. 3D surface profiles of Ti6Al4V substrate after different surface pretreatments. (a) Polishing; (b) grinding; (c) sand blasting

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Fig. 4. Surface roughness of Ti6Al4V substrate after different surface pretreatments

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Fig. 5. XRD patterns of Ti6Al4V substrate surface after different surface pretreatments

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Fig. 6. Coating/substrate interfacial bonding morphologies for Ti6Al4V after different surface pretreatments. (a) Polishing; (b) sand blasting

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Fig. 7. Schematic diagram of influence of slope on particle impacting behavior

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Fig. 8. Deformation morphologies and temperature distribution diagrams of Ti6Al4V substrates when Ti6Al4V particles collide with different surface conditions. (a)‒(c) Smooth surface; (d)‒(f) rough surface

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Fig. 9. Equivalent plastic strain distribution of substrates with different surface conditions. (a) Smooth surface; (b) rough surface

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Fig. 10. Energy evolution process of particle and substrate

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Table 1. Mass fraction of chemical composition of Ti6Al4V powder and substrate
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Table 1. Mass fraction of chemical composition of Ti6Al4V powder and substrate
Element Al Fe N O V C H Ti
Mass fraction /% 5.500-6.500 0.250 0.050 0.130 3.500-4.500 0.080 0.012 Bal.

Table 2. Process parameters for SLD-Ti6Al4V coating
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Table 2. Process parameters for SLD-Ti6Al4V coating
N₂ pressure /MPa N₂ temperature /℃ Standoff distance /mm Scanning velocity /mm·s^-1 Laser heating temperature /^oC
5 1000 30 15 800

Table 3. Material parameters of Ti6Al4V for simulation^［24］

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Table 3. Material parameters of Ti6Al4V for simulation^［24］

Parameter	Value
Density /（kg·m^-3）	4428
Young modulus /GPa	110
Poisson ratio	0.33
Specific heat /（J·kg^-1·K^-1）	580
Heat conductivity /（W·m^-1·K^-1）	7.955
A /MPa	862
B /MPa	331
N	0.34
C	0.012
M	0.8
T_m /℃	1605
T₀ /℃	25
Reference strain rate /s^-1	1

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Jianhua Yao, Bo Li, Qunli Zhang, Yaofeng Hu, Jiatao Jiang, Qiwei Song, Jianjun Wang. Effect of Surface Pretreatment on Interfacial Bonding of Ti6Al4V Coating Prepared by Supersonic Laser Deposition (Invited)[J]. Laser & Optoelectronics Progress, 2024, 61(1): 0114004

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