High-Speed Laser Metal Deposition of CrFeCoNi and AlCrFeCoNi HEA Coatings with Narrow Intermixing Zone and their Machining by Turning and Diamond Smoothing
Source abstract
Abstract
The processing of high-entropy alloys (HEAs) via laser metal deposition (LMD) is well known. However, it is still difficult to avoid chemical intermixing of the elements between the coating and the substrate. Therefore, the produced coatings do not have the same chemical composition as the HEA feedstock material. Single-layer CrFeCoNi and AlCrFeCoNi HEA coatings were deposited using high-speed laser metal deposition (HS-LMD). Elemental mapping confirmed a good agreement with the chemical composition of the powder feedstock material, and revealed that chemical intermixing was confined to the immediate substrate interface. The coatings are characterized by a homogeneous structure with good substrate bonding. The machining of these coatings via turning is possible. Subsequent diamond smoothing results in a strong decrease in the surface roughness. This study presents a complete manufacturing chain for the production of high-quality HS-LMD HEA coatings.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: High Entropy Alloys Studies · Additive Manufacturing Materials and Processes · High-Temperature Coating Behaviors
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Materials and Surface Engineering Group, Institute of Materials Science and Engineering, Chemnitz University of Technology, 09107 Chemnitz, Germany
Professorship Micromanufacturing Technology, Institute for Machine Tools and Production Processes, Chemnitz University of Technology, 09107 Chemnitz, Germany
Fraunhofer Institute for Machine Tools and Forming Technology IWU, 09126 Chemnitz, Germany
TRUMPF Laser- und Systemtechnik GmbH, 71254 Ditzingen, Germany
Funding
Sächsische Aufbaubank—Förderbank · European Social Fund ESF · Free State of Saxony · Chemnitz University of Technology
References (18)
Show source-provided references
1. Thermal Spray High-Entropy Alloy Coatings: A Review10.1007/s11666-020-01047-0 ↗
2. Processing of AlCoCrFeNiTi High Entropy Alloy by Atmospheric Plasma Spraying10.1088/1757-899X/181/1/012015 ↗
3. Schwarz, H., Uhlig, T., Rösch, N., Lindner, T., Ganss, F., Hellwig, O., Lampke, T., Wagner, G., and Seyller, T. (2021). CoCrFeNi High-Entropy Alloy Thin Films Synthesised by Magnetron Sputter Deposition from Spark Plasma Sintered Targets. Coatings, 11.10.3390/coatings11040468 ↗
4. Laser deposition of high-entropy alloys: A comprehensive review10.1016/j.optlastec.2021.107447 ↗
5. A Review on High Entropy Alloys Coatings: Fabrication Processes and Property Assessment10.1002/adem.201900343 ↗
6. A Review on Laser Cladding of High-Entropy Alloys, Their Recent Trends and Potential Applications10.1016/j.jmapro.2021.06.041 ↗
7. Tribological Properties of FeCoCrNiAlBx High-Entropy Alloys Coating Prepared by Laser Cladding10.1016/S1006-706X(17)30026-2 ↗
8. Effects of laser power on microstructure and properties of laser cladded CoCrBFeNiSi high-entropy alloy amorphous coatings10.1016/j.surfcoat.2018.10.086 ↗
9. Microstructure and Corrosion Behavior of CeO2/FeCoNiCrMo High-Entropy Alloy Coating Prepared by Laser Cladding10.1016/j.jallcom.2021.161826 ↗
10. Zhao, P., Li, J., Lei, R., Yuan, B., Xia, M., Li, X., and Zhang, Y. (2021). Investigation into Microstructure, Wear Resistance in Air and NaCl Solution of AlCrCoNiFeCTax High-Entropy Alloy Coatings Fabricated by Laser Cladding. Coatings, 11.10.3390/coatings11030358 ↗
11. Synthesis and Characterization of NiCoFeCrAl3 High Entropy Alloy Coating by Laser Cladding10.4028/www.scientific.net/AMR.97-101.1408 ↗
12. Wang, H., Zhang, W., Peng, Y., Zhang, M., Liu, S., and Liu, Y. (2020). Microstructures and Wear Resistance of FeCoCrNi-Mo High Entropy Alloy/Diamond Composite Coatings by High Speed Laser Cladding. Coatings, 10.10.3390/coatings10030300 ↗
13. Lindner, T., Günen, A., Töberling, G., Vogt, S., Karakas, M.S., Löbel, M., and Lampke, T. (2021). Boriding of Laser-Clad Inconel 718 Coatings for Enhanced Wear Resistance. Appl. Sci., 11.10.3390/app112411935 ↗
14. Investigations on surface morphology and crystalline phase deformation of Al80Li5Mg5Zn5Cu5 high-entropy alloy by ultra-precision cutting10.1016/j.matdes.2019.108367 ↗
15. Liborius, H., Nestler, A., Löbel, M., Lindner, T., Uhlig, T., Schubert, A., Wagner, G., and Lampke, T. (2021, January 7–10). Influence of the Composition of Thermally Sprayed (Al)CoCrFeNi(Mo) High-Entropy Alloy Coatings in Face Turning and Diamond Smoothing. Proceedings of the 21st EUSPEN, Virtual.
16. On the machining of selective laser melting CoCrFeMnNi high-entropy alloy10.1016/j.matdes.2018.05.012 ↗
17. Influence of the cutting parameters on the surface properties in turning of a thermally sprayed AlCoCrFeNiTi coating10.1016/j.procir.2020.02.015 ↗
18. Ultrasonic assisted milling of a CoCrFeNi medium entropy alloy10.1016/j.procir.2022.05.203 ↗