Occurrence of liquid-metal-embrittlement in a fully ferritic microstructureShow others and affiliations
2021 (English)In: Materialia, E-ISSN 2589-1529, Vol. 15, article id 101036Article in journal (Refereed) Published
Abstract [en]
Despite numerous studies making an effort to attain a thorough understanding of the liquid-metal-embrittlement (LME) phenomenon, the metallurgical facet of this catastrophic event remains unclear in iron/zinc (Fe/Zn) systems. While it has been frequently reported that the presence of austenite is an essential prerequisite for LME formation, the present study showed that fully ferritic structure is prone to LME phenomenon and has a high susceptibility to LME-cracking which makes it a novel observation adding to a pool of knowledge regarding LME occurrence. The elemental distribution analysis near the LME crack-tip indicated that liquid Zn was not present which confirmed solid-state grain boundary diffusion was a plausible description of LME-cracking. The occurrence of grain dropout as well as a Zn-containing crack in grain boundary without any branches with other cracks showed that grain boundary sensitization has assisted LME-cracking.
Place, publisher, year, edition, pages
Elsevier, 2021. Vol. 15, article id 101036
Keywords [en]
austenite, diffusion, ferrite, initial microstructure, Liquid-metal-embrittlement (LME)
National Category
Materials Engineering
Identifiers
URN: urn:nbn:se:hj:diva-51966DOI: 10.1016/j.mtla.2021.101036ISI: 000636280300005Scopus ID: 2-s2.0-85101054945Local ID: ;intsam;1532043OAI: oai:DiVA.org:hj-51966DiVA, id: diva2:1532043
2021-03-012021-03-012023-03-28Bibliographically approved