About this Abstract |
| Meeting |
MS&T25: Materials Science & Technology
|
| Symposium
|
Corrosion of Advanced Materials: Theory and Practice
|
| Presentation Title |
Corrosion of Hybrid IN718/SS316L Alloy Produced Via Laser Powder Bed Fusion |
| Author(s) |
Xiaolei Guo, Hailong Dai, Liyi Wang, Wei Xiong, Samuel Friedlein |
| On-Site Speaker (Planned) |
Xiaolei Guo |
| Abstract Scope |
Additive manufacturing (AM) has proven to be a versatile tool for creating advanced hybrid alloys with exceptional mechanical and corrosion properties by blending powders of different alloys. In this study, we developed a novel hybrid alloy using laser powder bed fusion (LPBF) of IN718 and SS316L powders in a 77:23 weight percent ratio. The resulting alloy exhibits excellent corrosion resistance in an aggressive aqueous solution containing 1 M HCl and 0.6 M NaCl. The performance is comparable to as-built IN718 and significantly superior to both as-printed SS316L and wrought IN718. The effects of heat treatment, alloy composition, microstructure, and surface passivity on the corrosion mechanisms of these fabricated alloys were systematically evaluated. The results indicate that careful selection and blending of different powders for LPBF can serve as a powerful approach for creating alloys with outstanding corrosion resistance while substantially reducing production costs. |