Filtern
Erscheinungsjahr
- 2017 (2) (entfernen)
Dokumenttyp
Sprache
- Englisch (2) (entfernen)
Referierte Publikation
- nein (2) (entfernen)
Schlagworte
- Additive manufacturing (1)
- Laser dispersing (1)
- Laser implantation (1)
- Laser metal deposition (1)
- Surface structuring (1)
- Ti-6Al-4V (1)
- Titanium-di-boride (1)
In this paper, titanium-di-boride is dispersed on a cold-working tool steel by use of a pulsed fiber laser with high beam quality to produce separated and elevated surface features. The potential to adjust the geometry as well as the mechanical properties of the produced structures in dependence on the process parameters (pulse power, pulse duration) is described by means of metallographic and topographical investigations. It can be ascertained that very hard (hardness > 1000 HV1) surface features of different shape (spots and short lines) can be produced. They are characterized by a fine-grained microstructure resulting from a rapid solidification and finely dispersed TiB2 particles. Finally, the paper proposes different applications for this structuring technique.
Laser metal deposition (LMD) has been applied as coating technology for many years. Today, the technologies capacity to produce 3D depositions leads to a new field of application as additive manufacturing method. In this paper, 3D laser metal deposition of titanium alloy Ti-6Al-4V is studied with special regard to the demands of additive manufacturing. Therefore, only the powder nozzle is used to create the shielding gas atmosphere, which ensures high geometric flexibility. Furthermore, specimen with high aspect ratio and hundreds of layers are manufactured, which represent typical features in additive manufacturing.