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Increasing ductility beyond post-uniform deformation through Zn lamellae deformation in Al at room temperature.
Han, Seung Zeon; Ryu, Byungki; Jeong, Il-Seok; Lim, Sung Hwan; Choi, Eun-Ae.
Afiliación
  • Han SZ; Extreme Materials Institute, Korea Institute of Materials Science (KIMS), Changwon, 642-831, South Korea.
  • Ryu B; Energy Conversion ResearchCenter, Korea Electrotechnology Research Institute (KERI), Changwon, 51543, South Korea.
  • Jeong IS; Extreme Materials Institute, Korea Institute of Materials Science (KIMS), Changwon, 642-831, South Korea.
  • Lim SH; Department of Advanced Materials Science & Engineering, Kangwon National University, Chuncheon, 200-701, South Korea.
  • Choi EA; Extreme Materials Institute, Korea Institute of Materials Science (KIMS), Changwon, 642-831, South Korea.
Heliyon ; 10(14): e34984, 2024 Jul 30.
Article en En | MEDLINE | ID: mdl-39149056
ABSTRACT
The Zn element precipitates during aging in the Al-Zn binary alloy. Increased Zn content and prolonged aging leads to discontinuous Zn precipitation. The addition of 2 wt% Cu to the Al-43 wt%Zn alloy accelerates this discontinuous precipitation, resulting in decreased thickness of Zn layers and inter-distance between them. This acceleration is attributed to the influence of Cu solutes on the Zn phase, thereby reducing the interface energy between Zn precipitates and the Al matrix. The Al-Zn-Cu alloy demonstrates exceptional behavior during tensile tests, displaying a simultaneous increase in tensile strength and ductility alongside an 75 % reduction in area at room temperature drawing. Notably, despite the drawn beyond uniform deformation limit, there is an observed increase in total elongation. Our demonstration highlights this phenomenon, attributing it to the sustained coherent interface between the Zn layer and the Al matrix, as well as the uninterrupted continuity of Zn layers during drawing.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Heliyon Año: 2024 Tipo del documento: Article País de afiliación: Corea del Sur Pais de publicación: Reino Unido
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Heliyon Año: 2024 Tipo del documento: Article País de afiliación: Corea del Sur Pais de publicación: Reino Unido