| About this Abstract |
| Meeting |
2022 TMS Annual Meeting & Exhibition
|
| Symposium
|
Environmental Degradation of Additively Manufactured Alloys
|
| Presentation Title |
Effect of Oxygen on Corrosion Resistance of Stainless Steel 316L Prepared by Powder Bed Fusion |
| Author(s) |
Xiaolei Guo, Eric Schindelholz, Hsien Lien Huang, Menglin Zhu, Szu-Chia Chien, Karthikeyan Hariharan, Ngan Huynh, Jinwoo Hwang, Wolfgang Windl, Gerald S. Frankel |
| On-Site Speaker (Planned) |
Gerald S. Frankel |
| Abstract Scope |
Despite the rapid development of AM techniques such as powder bed fusion (PBF) and the accompanying substantial advancement of the understanding of various physiochemical properties of materials prepared by this technique, there is a clear knowledge gap concerning the impact on corrosion properties. In this work, we explored the dissolution kinetics of the PBF-prepared and wrought SS316L using an artificial pitting corrosion approach, which enables the assessment of its corrosion resistance under an aggressive but well-defined pit environment. A modified syringe cell was also used to evaluate their pitting potential, thus minimizing the influence of crevice corrosion. In general, PBF-produced SS316L exhibits higher corrosion resistance. The underlying mechanism was further studied by leveraging advanced high-resolution scanning transmission electron microscopy and first principles simulation. We have evidence from imaging and calculations that the enhanced corrosion resistance of AM SS316L stems from the higher oxygen content compared to the wrought counterpart. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Environmental Effects, |