Impact of corrosion on mechanical properties of additively manufactured Invar 36

Abstract Invar alloys are used for high‐precision applications due to their invariance of the coefficient thermal expansion over a temperature range up about 250 °C. The present study determines mechanical and corrosive properties 36 (64 % Iron – Nickel) specimens produced by laser powder bed fusion. Tensile were fabricated investigate properties. influence horizontal vertical building orientation is considered. An apparent anisotropy depending on respective observed. Based this, further tensile stored in hydrochloric acid pickling solution, sulphate buffer solution sodium chloride analyse corrosion behaviour. findings after eight weeks individual media show that outsourcing results significant changes properties, especially fracture elongation.