Temperature-dependent mechanical properties of Al/Cu nanocomposites under tensile loading via molecular dynamics method
Abstract: Al-Cu Nanocomposites (NCs) are widely used in industrial applications for their high ductility, light weight, excellent thermal conductivity, and low-cost production. The mechanical properties and deformation mechanisms of Metal Matrix NCs (MMNCs) strongly depend on the matrix microstructure and the interface between the matrix and the second phase. The present study relies on Molecular Dynamics (MD) to investigate the effects of temperature on the mechanical properties and elastic and plastic behavior of the Al-Cu NC with single-crystal and polycrystalline matrices. The effects of heating on microstructural defects in the aluminum matrix and the Al/Cu interface were also addressed in the following. It was found that the density of defects such as dislocations and stacking fault areas are much higher in samples with polycrystalline matrices than those with single-crystal ones. Further, by triggering thermally activated mechanisms, increasing the temperature reduces the density of crystal defects. Heating also facilitates atomic migration and compromises the yield strength and the elastic modulus as a result of the increased energy of atoms in the grain boundaries and in the Al-Cu interface. The results showed that the flow stress decreased in all samples by increasing the temperature, making them less resistant to the plastic deformation.
- Standort
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Deutsche Nationalbibliothek Frankfurt am Main
- Umfang
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Online-Ressource
- Sprache
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Englisch
- Erschienen in
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Temperature-dependent mechanical properties of Al/Cu nanocomposites under tensile loading via molecular dynamics method ; volume:9 ; number:1 ; year:2022 ; pages:96-104 ; extent:9
Curved and layered structures ; 9, Heft 1 (2022), 96-104 (gesamt 9)
- Urheber
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Abdulrehman, Mohammed Ali
Hussein, Mohammed Ali Mahmood
Marhoon, Ismail Ibrahim
- DOI
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10.1515/cls-2022-0009
- URN
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urn:nbn:de:101:1-2022081214104498946834
- Rechteinformation
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Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
- Letzte Aktualisierung
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15.08.2025, 07:24 MESZ
Datenpartner
Deutsche Nationalbibliothek. Bei Fragen zum Objekt wenden Sie sich bitte an den Datenpartner.
Beteiligte
- Abdulrehman, Mohammed Ali
- Hussein, Mohammed Ali Mahmood
- Marhoon, Ismail Ibrahim
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