|About this Abstract
||2023 TMS Annual Meeting & Exhibition
||Environmental Degradation of Additively Manufactured Alloys
||Corrosion Mechanisms of Additively Manufactured 316L Stainless Steels in Chloride Solutions
||Thomas Voisin, Shohini Sen-Britain, ShinYoung Kang, Yuliang Zhang, Zhen Qi, Nathan Keilbart, Penghao Xiao, Seogkoo Cho, Yakun Zhu, Rongpei Shi, Y. Morris Wang, Roger Qiu, Brandon Wood
|On-Site Speaker (Planned)
Additively manufactured 316L stainless steel (316L SS) using laser powder bed fusion technique (L-PBF) exhibits an excellent resistance to pitting corrosion in chloride solutions. Pitting potential of the L-PBF 316L SS can be up to 4 times higher than the conventional, well annealed counterpart.
In this talk, we will first present a detailed multi-scale characterization of the microstructural features unique to L-PBF 316L SS. In a second part, we will present our investigations on the mechanisms associated with pitting on the as-built and well-polished surfaces. We will show that pitting is due to local chemistry variations created during the melting and solidification.
This work was performed under the auspices of the U.S. Department of Energy by Lawrence Livermore National Laboratory under Contract DE-AC52-07NA27344. Authors acknowledge the support of the Laboratory Directed Research and Development (LDRD) program (20-SI-004) at LLNL.