Deposition of Ti-6Al-4V using laser and wire, part II: Hardness and dimensions of single beads |
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| Authors: | Erhard Brandl Vesselin Michailov |
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| Affiliation: | a EADS Innovation Works, Metallic Technologies & Surface Engineering, D-81663 Munich, Germanyb Brandenburg University of Technology Cottbus, Chair of Joining and Welding Technology, Konrad-Wachsmann-Allee 17, D-03046 Cottbus, Germanyc Brandenburg University of Technology Cottbus, Chair of Design and Manufacturing, Konrad-Wachsmann-Allee 1, D-03046 Cottbus, Germanyd Technical University of Dresden, Institute of Materials Science, Chair of Materials Technology, Berndt-Bau, Helmholtzstr. 7, D-01062 Dresden, Germany |
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| Abstract: | Mechanical properties of additive manufactured components are greatly dependent on the microstructure, which is in turn greatly dependent on the thermal history. Single beads deposited are the fundamental unit of multi-layered components manufactured by an additive process. Dimensions and hardness of numerous single beads deposited and bead-on-plates are measured. The results are evaluated statistically in terms of indicating thermal history. The beads were produced using a Nd:YAG laser, Ti-6Al-4V substrate and Ti-6Al-4V (extra low interstitials) wire. The parameters varied are the laser beam power, welding speed, and wire-feed speed. The experiments show that hardness measurements are not necessarily useful to indicate thermal history, in contrast to dimensional measurements. |
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| Keywords: | Ti-6Al-4V Titanium Welding Deposition Additive manufacturing Hardness |
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