Details
| Originalsprache | Englisch |
|---|---|
| Aufsatznummer | e202501357 |
| Fachzeitschrift | Advanced engineering materials |
| Jahrgang | 28 |
| Ausgabenummer | 3 |
| Publikationsstatus | Veröffentlicht - 4 Feb. 2026 |
Abstract
Microstructure, hardness, physical properties, and corrosion response of Al-Cu intermetallic compounds (IMCs) are investigated with the aim of establishing optimization guidelines for the Al-Cu bimetallic compound casting process. Five Al-Cu samples with chemical compositions promoting stable single phases ((Formula presented.) and (Formula presented.) at ambient temperature are produced via induction casting. The microstructural and compositional analysis, however, evidenced the precipitation of secondary phases in the (Formula presented.) and θ samples. It is also observed that θ can directly transform into (Formula presented.), due to a kinetically enabled process. Physical properties, including electrical conductivity, thermal diffusivity, and specific heat, are measured, and the thermal conductivity is calculated accordingly. It is observed that the copper-rich IMCs have lower thermal conductivity compared to other Al-Cu IMCs. The nonmonotonous relationship between physical properties and chemical composition is correlated to the crystallography of the phases and the precipitation of secondary phases. Experimental validation demonstrated a significant impact of casting defects (over 30%) on the thermal conductivity of the interfaces. Moreover, the overall hardness of cast samples showed significant deviation from previous studies, emphasizing the impact of the sample production method. Finally, corrosion assessment using a 0.5% NaCl solution suggested galvanic corrosion as the primary corrosion mechanism.
ASJC Scopus Sachgebiete
- Werkstoffwissenschaften (insg.)
- Allgemeine Materialwissenschaften
- Physik und Astronomie (insg.)
- Physik der kondensierten Materie
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in: Advanced engineering materials, Jahrgang 28, Nr. 3, e202501357, 04.02.2026.
Publikation: Beitrag in Fachzeitschrift › Artikel › Forschung › Peer-Review
}
TY - JOUR
T1 - Exploring Microstructure–Physical Property–Corrosion Response Relationship in Intermetallic Compounds of Al-Cu Bimetallic Interfaces
AU - Nazarahari, Alireza
AU - Blank, Tatiana
AU - Hinte, Christian
AU - Ozdemir, Huseyin Can
AU - Barienti, Khemais
AU - Klose, Christian
AU - Canadinc, Dermican
AU - Maier, Hans Jürgen
N1 - Publisher Copyright: © 2025 The Author(s). Advanced Engineering Materials published by Wiley-VCH GmbH.
PY - 2026/2/4
Y1 - 2026/2/4
N2 - Microstructure, hardness, physical properties, and corrosion response of Al-Cu intermetallic compounds (IMCs) are investigated with the aim of establishing optimization guidelines for the Al-Cu bimetallic compound casting process. Five Al-Cu samples with chemical compositions promoting stable single phases ((Formula presented.) and (Formula presented.) at ambient temperature are produced via induction casting. The microstructural and compositional analysis, however, evidenced the precipitation of secondary phases in the (Formula presented.) and θ samples. It is also observed that θ can directly transform into (Formula presented.), due to a kinetically enabled process. Physical properties, including electrical conductivity, thermal diffusivity, and specific heat, are measured, and the thermal conductivity is calculated accordingly. It is observed that the copper-rich IMCs have lower thermal conductivity compared to other Al-Cu IMCs. The nonmonotonous relationship between physical properties and chemical composition is correlated to the crystallography of the phases and the precipitation of secondary phases. Experimental validation demonstrated a significant impact of casting defects (over 30%) on the thermal conductivity of the interfaces. Moreover, the overall hardness of cast samples showed significant deviation from previous studies, emphasizing the impact of the sample production method. Finally, corrosion assessment using a 0.5% NaCl solution suggested galvanic corrosion as the primary corrosion mechanism.
AB - Microstructure, hardness, physical properties, and corrosion response of Al-Cu intermetallic compounds (IMCs) are investigated with the aim of establishing optimization guidelines for the Al-Cu bimetallic compound casting process. Five Al-Cu samples with chemical compositions promoting stable single phases ((Formula presented.) and (Formula presented.) at ambient temperature are produced via induction casting. The microstructural and compositional analysis, however, evidenced the precipitation of secondary phases in the (Formula presented.) and θ samples. It is also observed that θ can directly transform into (Formula presented.), due to a kinetically enabled process. Physical properties, including electrical conductivity, thermal diffusivity, and specific heat, are measured, and the thermal conductivity is calculated accordingly. It is observed that the copper-rich IMCs have lower thermal conductivity compared to other Al-Cu IMCs. The nonmonotonous relationship between physical properties and chemical composition is correlated to the crystallography of the phases and the precipitation of secondary phases. Experimental validation demonstrated a significant impact of casting defects (over 30%) on the thermal conductivity of the interfaces. Moreover, the overall hardness of cast samples showed significant deviation from previous studies, emphasizing the impact of the sample production method. Finally, corrosion assessment using a 0.5% NaCl solution suggested galvanic corrosion as the primary corrosion mechanism.
KW - aluminum
KW - bimetallic compound casting
KW - copper
KW - intermetallics
KW - thermal conductivity
UR - http://www.scopus.com/inward/record.url?scp=105024407767&partnerID=8YFLogxK
U2 - 10.1002/adem.202501357
DO - 10.1002/adem.202501357
M3 - Article
AN - SCOPUS:105024407767
VL - 28
JO - Advanced engineering materials
JF - Advanced engineering materials
SN - 1438-1656
IS - 3
M1 - e202501357
ER -