Unexpected Interface Corrosion and Sensitization Susceptibility in Additively Manufactured Austenitic Stainless Steel

• Published in: Corrosion (Houston, Tex.) Vol. 74; no. 2; pp. 153 - 157
• Main Authors: Macatangay, D.A., Thomas, S., Birbilis, N., Kelly, R.G.
• Format: Journal Article
• Language: English
• Published: Houston NACE International 01.02.2018
• Subjects: Additive manufacturing; Annealing; Austenitic stainless steels; Boundaries; Communication; Corrosion; Dissolution; Dissolving; Electrolytic etching; Etching; Exposure; Grain boundaries; High temperature; Interfaces; Interferometry; Laser beam melting; Lasers; Light microscopy; Melt pools; Optical microscopy; Scanning electron microscopy; Stainless steel; Susceptibility; Temperature; Titanium alloys

This communication describes observations of unexpected microstructural interface susceptibility to accelerated dissolution in additively manufactured (AM) Type 316L stainless steel prepared by selective laser melting. Observations include accelerated microstructural interface dissolution in the as-...