The Effects of Laser Power on the Performance and Microstructure of Inconel 718 Formed by Selective Laser Melting
Source abstract
Abstract
In this study, the effects of laser power on the microstructure and mechanical properties of Inconel 718 formed by SLM were systematically studied. The results show that with the increase in laser power from 285 W to 360 W, the increase in working temperature in the molten pool promoted the evaporation of gas and the vaporization of the low-melting-point alloy components, and the relative density gradually increased from 99.31% to 99.79%. In addition, with the increase in laser energy density, the microstructure gradually coarsened from columnar dendrites to cellular crystals. The nano-hardness of the material decreased with the increase in laser power. The nano-hardness of four groups of samples from 285 W to 360 W decreased form 3.43 GPa to 2.09 GPa, and the elastic modulus decreased form 205.72 GPa to 199.91 GPa.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Additive Manufacturing Materials and Processes · Welding Techniques and Residual Stresses · High Entropy Alloys Studies
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Beijing Institute of Spacecraft System Engineering, Beijing 100094, China
National Key Laboratory of Spacecraft Thermal Control, Beijing 100094, China
School of Mechanical Engineering, University of Science and Technology Beijing, Beijing 100083, China
Shunde Innovation School, University of Science and Technology Beijing, Foshan 528300, China
Funding
Scientific and Technological Innovation Foundation of Foshan, USTB
References (34)
Show source-provided references
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