Impact of Machining Methods on High-Entropy Alloy Properties
Author Information
Author(s): Jeong Ho-In, Salem Osama, Jung Dong-Won, Lee Choon-Man, Lee Jeung-Hoon
Primary Institution: Mechatronics Research Center, Changwon National University
Hypothesis
How do conventional and laser-assisted machining affect the microstructure and mechanical properties of a Ti-Nb-Cr-V-Ni high-entropy alloy?
Conclusion
Post-processing with laser-assisted machining significantly improves the properties of the refractory high-entropy alloy Ti-Nb-Cr-V-Ni compared to conventional machining.
Supporting Evidence
- The alloy showed significant softening above 800 °C, reducing tensile strength.
- Laser-assisted machining reduced cutting forces by 60% compared to conventional machining.
- Surface roughness improved by 41.4% with laser-assisted machining.
- The chemical composition of the alloy remained unchanged after both machining methods.
Takeaway
This study shows that using lasers to help with machining makes a special metal stronger and easier to work with than using regular machines.
Methodology
The study involved fabricating a high-entropy alloy using Directed Energy Deposition and then analyzing the effects of conventional and laser-assisted machining on its properties.
Limitations
Limited research on the post-processing of high-entropy alloys using laser-assisted machining.
Digital Object Identifier (DOI)
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