The Influence of As-Cast Grain Size on the Formation of Recrystallized Grains and the Related Mechanical Properties in Al–Zn–Mg–Cu-Based Alloy Sheets

The Influence of As-Cast Grain Size on the Formation of Recrystallized Grains and the Related Mechanical Properties in Al–Zn–Mg–Cu-Based Alloy Sheets

The influence of as-cast grain size on recrystallization and the related mechanical properties of Al–Zn–Mg–Cu-based alloys was investigated. Grain sizes ranging from 163 to 26 μm were achieved by adding Ti, Cr and Mn, and ZnO nano-particles, which acted as heterogeneous nucleation sites. A decrease...

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Bibliographic Details
Published in:Materials Vol. 17; no. 21; p. 5267
Main Authors: Jeon, Jonggyu, Lee, Sangjun, Jeon, Jeheon, Kang, Maru, Kang, Heon
Format: Journal Article
Language:English
Published: Basel MDPI AG 01-11-2024
Subjects:
Alloys
Aluminum
Copper
Copper base alloys
Deformation
Energy consumption
Grain boundaries
Grain size
Magnesium
Mechanical properties
Metal sheets
Nanoparticles
Nucleation
Precipitates
Recrystallization
Scanning electron microscopy
Specialty metals industry
Zinc
Zinc oxide
United States > US
Japan
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Summary:The influence of as-cast grain size on recrystallization and the related mechanical properties of Al–Zn–Mg–Cu-based alloys was investigated. Grain sizes ranging from 163 to 26 μm were achieved by adding Ti, Cr and Mn, and ZnO nano-particles, which acted as heterogeneous nucleation sites. A decrease in the as-cast grain size led to a corresponding reduction in the recrystallized grain size from 54 to 13 μm. Notably, as-cast grain sizes below 100 μm provided additional nucleation sites at grain boundaries, allowing for a reasonable prediction of recrystallized grain size. Finer grains also contributed to enhanced mechanical properties, with yield strength increasing as recrystallized grain size decreased without significant loss of elongation. Additional strengthening was observed due to η-precipitates at grain boundaries, further improving the properties of fine-grained sheets.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
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content type line 23
ISSN:1996-1944
1996-1944
DOI:10.3390/ma17215267