Corrosion Performance of Additively Manufactured (AM) Alloy 625
An Alloy 625 laser powder bed fusion printed component was created and analyzed via a Finite Element Model (FEM), and was then statically load tested and fatigue tested to simulate typical oil-field conditions. Various properties, including hardness, were documented along with the microstructure.
Immersion corrosion testing of Alloy 625 AM and wrought Alloy 625 bar were performed in a reducing inorganic acid, an oxidizing inorganic acid, and an organic acid. Immersion tests were also performed in a ferric chloride solution to compare the critical pitting temperature of the Alloy 625 AM material to a traditional wrought Alloy 625 material.
Corrosion rates of AM alloy vs wrought alloy 625 in above mentioned conditions and effect of microstructure due to exposure to the acids and salts will be presented.
Key words: Additive Manufacturing, Alloy 625, Corrosion Resistance