|About this Abstract
||Materials Science & Technology 2019
||Corrosion of Additively Manufactured Metals
||Corrosion of Additively Manufactured Stainless Steels – Process, Structure, and Performance
||Michael A. Melia, Eric Schindelholz, Jeffrey Rodelas
|On-Site Speaker (Planned)
||Michael A. Melia
Additively manufactured (AM) metals exhibit numerous microstructural and morphological differences compared to their wrought counterparts from lack of fusion porosity to dislocation cell structures. The influence these unique features have on the metals corrosion resistance is largely not understood. The use of heat treatments and other post-processing procedures can return the AM part to a more traditional appearance; however this adds time and costs to the part. The present work will address the current state of understanding, gaps in scientific knowledge, and research needs with greatest impact for advancement and qualification of AM stainless steels in corrosive service environments. The impact build orientation, as-built surface morphology, surface finish techniques, melt pool boundaries, porosity, grain boundary character, and nonmetallic inclusions have on local corrosion initiation, propagation, and environmental assisted cracking will be discussed for a 316L alloy fabricated using powder bed selective laser melting (SLM) relative to its conventionally processed counterpart.