研究目的
Investigating the influence of laser power and scanning velocity on the molten pool size in the selective laser melting (SLM) of GH3536 alloy.
研究成果
The increase of laser power and the decrease of scanning velocity will increase the size of molten pool. There is a positive linear relationship between the line energy density and molten pool size. The simulated molten pool width and depth are in good agreement with experimental values with maximum percentage errors at 5.01% and 8.42%, respectively.
研究不足
The study is limited to the scope of the study parameters, and the model's accuracy is dependent on the assumptions made regarding material properties and heat source distribution.
1：Experimental Design and Method Selection:
A combination of finite element simulation and experimental measurement is used to study the molten pool size in SLM of GH3536 alloy.
2：Sample Selection and Data Sources:
GH3536 alloy samples are fabricated using SLM technology with different parameters.
3：List of Experimental Equipment and Materials:
EOS M290 SLM equipment, GH3536 powder, optical microscope (OM).
4：Experimental Procedures and Operational Workflow:
The powder bed is melt by a computer-controlled laser selectively with a scanning velocity of 960 mm/s. The cross-sectional microstructure of the eroded part is examined by an optical microscope.
5：Data Analysis Methods:
The sizes of 20 clear molten pools are measured and then averaged as molten pool size.
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