Achieving balanced uniform and local corrosion performance of SS 316L/IN625 hybrid alloy manufactured by directed energy deposition
This study investigates hybrid stainless steel (SS) 316L/Inconel 625 (IN625) materials via DED for hydrofluoric acid (HF) corrosion resistance. 20% SS 316L + 80% IN625 (20% 316L) exhibits low uniform corrosion (0.35 mm/y) and improved local corrosion performance. High Cr2O3 content in its passive film ensures uniform corrosion resistance. The thermodynamic analysis combined with microstructure observation shows reduced Nb content in 20% 316L's Laves phase, enhancing resistance to micro-galvanic local corrosion. This study provides insights into the design and manufacturing technology of corrosion-resistant materials in harsh corrosive environments.
Authors
- Hailong Dai (ORCID: https://orcid.org/0000-0003-1923-4678)
- Shuyao Zhang (ORCID: https://orcid.org/0009-0003-9231-6618)
- Xu Chen (ORCID: https://orcid.org/0000-0002-7754-9814)
- Zhe Zhang (ORCID: https://orcid.org/0000-0003-1299-4578)
- Yajing Li (ORCID: https://orcid.org/0009-0009-6885-0558)
Institutions
- East China University of Science and Technology (CN)
- Tianjin University (CN)
- Tianjin Special Equipment Supervision and Inspection Technology Research Institute (CN)
Publication Details
- Journal
- Journal of Materials Research and Technology
- Published
- 2024-09-01
- DOI
- https://doi.org/10.1016/j.jmrt.2024.08.210
- Citations
- 8
- Primary Topic
- Additive Manufacturing Materials and Processes
- Type
- article
- Field-Weighted Citation Impact
- 1.70
Funders
- National Natural Science Foundation of China
- Natural Science Foundation of Ningbo
- National Key Research and Development Program of China