|About this Abstract
|2023 TMS Annual Meeting & Exhibition
|Environmental Degradation of Additively Manufactured Alloys
|Corrosion Behavior of Additively Manufactured Al-Ce-X and Al-10SiMg Alloys in 3.5 wt.% NaCl Solution
|Jiheon Jun, Alex Plotkowski, Amit Shyam, Sumit Bahl, Ryan Dehoff, Yi-Feng Su, J. Allen Haynes
|On-Site Speaker (Planned)
Additively manufactured (AM) Al-CeNiMn, Al-CeNiMnZr and Al-10SiMg alloys have been evaluated for hybrid powertrain components in the next-generation automotive systems. The corrosion behaviors of these newly developed and commercial AM Al alloys were assessed in aggressive aqueous environments. Electrochemical impedance spectroscopy (EIS) and polarization techniques were employed to evaluate and compare the corrosion of the AM alloys to commercial 319 cast Al alloys in 3.5 wt.% NaCl solution. Long-term immersion tests in 3.5 wt.% NaCl solution were also performed, and the post-immersion samples were characterized using microscopic and X-ray spectroscopic techniques to investigate the microstructural features associated with corrosion attack. Based on our results, the relative corrosion resistance can be summarized as; 319 Al alloy (least resistant) < AM Al-CeNiMn < AM Al-CeNiMnZr ≈ AM Al-10SiMg.
|Additive Manufacturing, Aluminum, Environmental Effects