Interstitial Segregation has the Potential to Mitigate Liquid Metal Embrittlement in Iron
Abstract: The embrittlement of metallic alloys by liquid metals leads to catastrophic material failure and severely impacts their structural integrity. The weakening of grain boundaries (GBs) by the ingress of liquid metal and preceding segregation in the solid are thought to promote early fracture. However, the potential of balancing between the segregation of cohesion‐enhancing interstitial solutes and embrittling elements inducing GB de‐cohesion is not understood. Here, the mechanisms of how boron segregation mitigates the detrimental effects of the prime embrittler, zinc, in a Σ5 [001] tilt GB in α‐Fe (4 at.% Al) is unveiled. Zinc forms nanoscale segregation patterns inducing structurally and compositionally complex GB states. Ab initio simulations reveal that boron hinders zinc segregation and compensates for the zinc‐induced loss in GB cohesion. The work sheds new light on how interstitial solutes intimately modify GBs, thereby opening pathways to use them as dopants for preventing disastrous material failure.
- Location
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Deutsche Nationalbibliothek Frankfurt am Main
- Extent
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Online-Ressource
- Language
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Englisch
- Bibliographic citation
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Interstitial Segregation has the Potential to Mitigate Liquid Metal Embrittlement in Iron ; day:30 ; month:05 ; year:2023 ; extent:11
Advanced materials ; (30.05.2023) (gesamt 11)
- Creator
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Ahmadian, Ali
Scheiber, Daniel
Zhou, Xuyang
Gault, Baptiste
Romaner, Lorenz
Kamachali, Reza D.
Ecker, Werner
Dehm, Gerhard
Liebscher, Christian H.
- DOI
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10.1002/adma.202211796
- URN
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urn:nbn:de:101:1-2023053115533536936472
- Rights
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Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
- Last update
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14.08.2025, 10:49 AM CEST
Data provider
Deutsche Nationalbibliothek. If you have any questions about the object, please contact the data provider.
Associated
- Ahmadian, Ali
- Scheiber, Daniel
- Zhou, Xuyang
- Gault, Baptiste
- Romaner, Lorenz
- Kamachali, Reza D.
- Ecker, Werner
- Dehm, Gerhard
- Liebscher, Christian H.
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Implication of grain-boundary structure and chemistry on plasticity and failure
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