Jiafei Lü, Xiaoguang Han, Dong He, Fengming Du, Yuzhen Chen, Jiujun Xu. Effect of Typical Laser Parameters on Micro-Dimple Geometry of High-Silicon Aluminum Alloy Cylinder Liner Surface[J]. Laser & Optoelectronics Progress, 2020, 57(13): 131402
- Laser & Optoelectronics Progress
- Vol. 57, Issue 13, 131402 (2020)
Fig. 1. Surface morphology and parameters of polished aluminum alloy cylinder liner. (a) Metallograph; (b) roughness
Fig. 2. Laser microtexture processing system
Fig. 3. Characterization of geometry topography of micro-dimple. (a) Surface topography; (b) cross-sectional profile
Fig. 4. Influence of energy density on micro-dimple geometry topography. (a) Diameter and depth; (b) ablation volume
Fig. 5. Three dimensional topography of micro-dimple under different pulse numbers. (a) 1 pulse; (b) 5 pulses; (c) 10 pulses; (d) 20 pulses; (e) 30 pulses; (f) 50 pulses
Fig. 6. Effect of pulse number on size and volume of micro-dimples. (a) Diameter and depth; (b) ablation volume
Fig. 7. Histogram of hardness on edge of dimple at energy density of 18 J/cm2 and 180 J/cm2
Fig. 8. Curves of EP and D2
Fig. 9. Curve of φth and N
Fig. 10. Micro-textured surface topography with different area occupancies. (a) 5%; (b) 10%; (c) 20%
Fig. 11. Effect of micro-texture with different area occupancy rates on surface friction performance of cylinder liner. (a) Friction curves; (b) abrasion loss
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Table 1. Main chemical composition of aluminum alloy cylinder liner
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Table 2. Friction and wear test parameters
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