Microstructure and mechanical properties of Ti-6Al-4V alloy prepared by selective laser melting

Abstract

Additive manufacturing (AM) is a new method to make a product based on CAD data overlaying materials layer by layer. One of AM methods for metal is selective laser melting (SLM) which uses laser for scanning patterns on metal powder layer and melting it. Since SLM are under development at the moment, its product may have residual stress, defects and lack of mechanical properties. In this study, Ti-6Al-4V samples manufactured by SLM with different scanning velocity were analyzed in terms of the mechanical properties and the microstructure. The results revealed that scanning velocity significantly affect the porosity of sample as well as mechanical properties.