研究目的
Investigating the effects of input variables of laser-assisted turning (LAT) and conventional turning (CT) on machining performance of SiCp/2024Al composites.
研究成果
LAT significantly improves surface quality of SiCp/2024Al composites by reducing surface roughness up to 81.73%, inhibiting micro-cracks and defects, and producing more residual compressive stress compared to CT. Optimal improvements are observed under specific cutting conditions.
研究不足
The study is limited to specific ranges of cutting parameters and laser powers. The effect of laser power beyond 50 W and cutting depths beyond the laser heat-affected layer is not explored.
1：Experimental Design and Method Selection:
The study compares LAT and CT methods on SiCp/2024Al composites, focusing on surface roughness, microstructure, and residual stress. Variables include cutting speed (30-60 m/min), feed rate (0.01-0.1 mm/rev), and laser power (0-50 W).
2：01-1 mm/rev), and laser power (0-50 W).
Sample Selection and Data Sources:
2. Sample Selection and Data Sources: SiCp/2024Al composite material with 45% volume SiC particles, average particle size 5-10 μm, and hardness >31 HRC.
3：List of Experimental Equipment and Materials:
Fiber laser (IPG, 300 W), CNC lathe, YBC251 cemented carbide tool with 0.8 mm nose radius, SEM for surface observation.
4：8 mm nose radius, SEM for surface observation.
Experimental Procedures and Operational Workflow:
4. Experimental Procedures and Operational Workflow: Machining under varying cutting depths, speeds, feed rates, and laser powers; measuring surface roughness and residual stress.
5：Data Analysis Methods:
Comparison of surface roughness and residual stress between LAT and CT methods.
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