| Autor: |
Caiden J. Parker, Karma Zuraiqi, Vaishnavi Krishnamurthi, Edwin LH Mayes, Pierre H. A. Vaillant, Syeda Saba Fatima, Karolina Matuszek, Jianbo Tang, Kourosh Kalantar‐Zadeh, Nastaran Meftahi, Chris F. McConville, Aaron Elbourne, Salvy P. Russo, Andrew J. Christofferson, Ken Chiang, Torben Daeneke |
| Jazyk: |
angličtina |
| Rok vydání: |
2024 |
| Předmět: |
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| Zdroj: |
Advanced Science, Vol 11, Iss 26, Pp n/a-n/a (2024) |
| Druh dokumentu: |
article |
| ISSN: |
2198-3844 |
| DOI: |
10.1002/advs.202400147 |
| Popis: |
Abstract Crystallization of alloys from a molten state is a fundamental process underpinning metallurgy. Here the direct imaging of an intermetallic precipitation reaction at equilibrium in a liquid‐metal environment is demonstrated. It is shown that the outer layers of a solidified intermetallic are surprisingly unstable to the depths of several nanometers, fluctuating between a crystalline and a liquid state. This effect, referred to herein as crystal interface liquefaction, is observed at remarkably low temperatures and results in highly unstable crystal interfaces at temperatures exceeding 200 K below the bulk melting point of the solid. In general, any liquefaction process would occur at or close to the formal melting point of a solid, thus differentiating the observed liquefaction phenomenon from other processes such as surface pre‐melting or conventional bulk melting. Crystal interface liquefaction is observed in a variety of binary alloy systems and as such, the findings may impact the understanding of crystallization and solidification processes in metallic systems and alloys more generally. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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