研究目的
Investigating the effects of laser welding parameters on the bead geometry and metallurgical properties of titanium Ti-6Al-4V alloy.
研究成果
Titanium and its alloys are successfully laser welded on the bead on plate to optimize the process parameters to obtain the sufficient weld geometry. The formation of fine grained microstructure were observed in fusion zone for the welds of different parameters, which is due to the variations in heat input levels. The mechanical properties of the welds achieved higher for the medium level of heat inputs.
研究不足
The study is limited to the effects of laser power and welding speed on weld bead geometry and metallurgical properties of Ti-6Al-4V alloy. Other parameters such as beam size, focal distance, and shielding gas were kept constant.
1:Experimental Design and Method Selection:
Laser welding process was carried out to make bead on plate welds with different welding conditions. The welding conditions were optimized based on trial and error methods.
2:Sample Selection and Data Sources:
Ti-6Al-4V titanium alloy with a thickness of 1 mm was used.
3:List of Experimental Equipment and Materials:
Laser welding equipment with varying laser power from 1 kW to
4:5 kW and welding speed of 5 m/min to 9 m/min, Ar shielding gas. Experimental Procedures and Operational Workflow:
Welds were cut in transverse direction to identify bead geometries and hardness properties evaluation. Tensile specimens were prepared as per ASTM standard. Vicker’s hardness tester was used.
5:Data Analysis Methods:
The effect of welding conditions on welding geometry were evaluated with the measuring of their features.
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