Investigation of Ti6Al4V and CoCrW Alloys Produced by Additive Manufacturing Technology

摘要

The main aim of the present paper is to evaluate the mechanical properties and porosity of Ti6Al4V and CoCrW alloys produced by Selective Laser Melting (SLM) as an additive manufacturing (AM) technology. Evaluation of porosity was realized on non-etched samples using by optical microscope Zeiss Axiovert A1 equipped with an image analyzer. Characterization was carried out at 100x magnifications on the minimum seven different image fields for specimens prepared by AM technology. The pores were evaluated by Image pro plus software. The pores in the Ti6Al4V alloy showed homogeneous distribution without significant large pores. In the CoCrW alloy were pores of 2-4 μm which were present as well as pore with a size above 90 μm. The results show the significant inhomogeneity of the morphology and pores size in the investigated materials.