Effect of process parameters on defects in large scale components manufactured by direct laser deposition
| Autor: | Vera Popovich, Anatoliy Popovich, Sergei Igoshin, D. V. Masaylo |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
010302 applied physics
Cladding (metalworking) Fusion Materials science Oxide 02 engineering and technology 021001 nanoscience & nanotechnology Laser 01 natural sciences law.invention Lift (force) chemistry.chemical_compound Cracking chemistry law 0103 physical sciences Laser power scaling Composite material 0210 nano-technology Porosity |
| Zdroj: | Materials Today: Proceedings. 30:665-671 |
| ISSN: | 2214-7853 |
| DOI: | 10.1016/j.matpr.2020.01.519 |
| Popis: | Direct laser deposition (DLD), implemented on the basis of a 5-axis robot manipulator, is a very flexible technique with many adjustable process parameters affecting the quality of the final product. Objects manufactured by the DLD method may contain defects significantly reducing mechanical and functional properties. This article provides an overview of possible DLD process-induced defects that were identified by increasing the density of the produced material. The following defects were identified and discussed in the current work: lack of fusion, porosity, cracking, oxide inclusions, and metal influx. It is shown that by changing such process parameters as laser power, powder feed rate, head lift and hatch distance, it is possible to improve the quality of the cladding and substantially reduce the process-induced defects. |
| Databáze: | OpenAIRE |
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