Speaker
Description
Abstract
Selective Laser Melting (SLM) has already been used to manufacture of complex parts with high precision. However, the high cost for surface preparation is still a limiting factor for widespread of SLM parts in different industry branches. The high surface roughness and their resulting residual porosity influence the mechanical properties, especially dynamic ones. In this presentation, pack cementation process will be introduced as a novel method to refine the surface roughness and the microstructure in surface zone as well as to improve the mechanical behaviour of SLM parts.
The effect of pack cementation process of the resulted microstructure in the surface zone of SLM specimens was investigated. The as-built and as-modified SLM specimens were compared and the surface roughness and surface porosity were measured. For this purpose, two different alloys: Ni- and Fe-Basis alloys were examined. Finally, the creep strength at different temperatures as well as the fatigue behaviour for both as-built and as-modified specimens will be presented.
| Speaker Country | Germany |
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