On the preference of liquid-metal embrittlement along high-angle grain-boundaries in galvanized steels
Focusing on the early stages of liquid-metal embrittlement (LME) of Zinc (Zn) coated advanced high-strength steels, we show that the Zn infiltration path prior to grain-boundary decohesion and therefore cracking distinctly follows high-angle grain boundaries (HAGBs). This selective transport prior to LME-induced microcracking rationalizes the experimentally observed post-mortem cracking along martensitic HAGBs. We discuss the selective Zn transport and GB-weakening in terms of an misorientation-angle dependent atomic density and diffusivity, and its effect on GB-segregation.
Authors
- Yuki Ikeda (ORCID: https://orcid.org/0000-0002-8045-9625)
- R. Maaß (ORCID: https://orcid.org/0000-0001-8329-4566)
- Seung-Chang Han (ORCID: https://orcid.org/0000-0001-8170-2351)
- Reza Darvishi Kamachali (ORCID: https://orcid.org/0000-0002-5906-9673)
- Theophilus Wallis (ORCID: https://orcid.org/0009-0003-5605-485X)
Institutions
- Federal Institute For Materials Research and Testing (DE)
- University of Illinois Urbana-Champaign (US)
- University of Münster (DE)
- Technical University of Munich (DE)
Publication Details
- Journal
- Scripta Materialia
- Published
- 2025-05-14
- DOI
- https://doi.org/10.1016/j.scriptamat.2025.116723
- Citations
- 6
- Primary Topic
- Microstructure and Mechanical Properties of Steels
- Type
- article
- Field-Weighted Citation Impact
- 4.28
Funders
- Deutsche Forschungsgemeinschaft