Eventos Anais de eventos
COBEF 2017
Congresso Brasileiro de Engenharia de Fabricação
Study on Selective Laser Melting of Copper
Submission Author:
Luiza Bertoldo Benedetti , SC
Co-Authors:
Cleiton André Comelli, Carlos Ahrens
Presenter: Cleiton André Comelli
doi://10.26678/ABCM.COBEF2017.COF2017-0148
Abstract
Selective laser melting (SLM) is one of the most popular additive manufacturing (AM) technologies for the manufacture of metal parts from a CAD representation. One investigation of interest in this field is the fabrication of copper components. In this study cube specimens were manufactured with varied parameters, in terms of layer thickness, scanning speed and remelting. The investigation aimed to obtain the highest consolidation for copper, a difficult material to process due to its high thermal conductivity and lower laser absorption coefficient. The best parameters of processing were obtained by using an energy application between approximately 50 and 300 J/mm3. The results showed that a higher energy application produced warpage, and a lower application of energy resulted in non-densified specimens. The specimens were characterized by evaluating their hardness and microstructure. The results were analyzed under ANOVA method, which showed a weak correlation between consolidation and hardness, while the analysis of the microstructure supported the low mechanical properties obtained with the samples if compared to solid pure copper.
Keywords
Additive manufacturing, Selective laser melting, Copper
