Abstract
An additive manufacturing (AM) method has been attracting interest due to its process in free-form
fabrication. Selective laser melting (SLM), one AM technology that is useful for direct and complicated
shape formation, forms a 3D material by building it layer by layer from a metal powder. This paper
reviews the recent progress in selective laser melting, which is an additive manufacturing technology.
We developed sputter-free fabrication for SLM in a vacuum to minimize the surface roughness to
0.40 μm at a laser scanning speed of 10 mm/s.
