T1 precipitate bands and particle stimulated nucleation in 2195 Al-Cu-Li alloy during hot deformation

Dynamic precipitation and recrystallization behavior during middle-temperature and appropriate strain rates provide a chance to obtain desirable structure, which significantly improve the mechanical properties of aluminum alloys. In this paper, the microstructure evolution in the typical regions of...

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Bibliographic Details
Published in:Journal of alloys and compounds 2022-07, Vol.909, p.164716, Article 164716
Main Authors: Lu, Ding-ding, Li, Jin-feng, Guo, You-jie, Wang, Gui, Wu, Rong, Ma, Peng-cheng, Chen, Yong-lai, Zhang, Xu-hu, You, Wen, Zhang, Rui-feng
Format: Article
Language:English
Subjects:
2195 Al-Cu-Li alloy
Alloys
Aluminum base alloys
Copper
Deformation
Dynamic recrystallization
Energy dissipation
Grain boundaries
High temperature
Hot pressing
Hot processing map
Internal energy
Mechanical properties
Nucleation
Particle stimulated nucleation
Precipitate band
Precipitates
Process mapping
Strain rate
Temperature
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Summary:Dynamic precipitation and recrystallization behavior during middle-temperature and appropriate strain rates provide a chance to obtain desirable structure, which significantly improve the mechanical properties of aluminum alloys. In this paper, the microstructure evolution in the typical regions of processing map of 2195 Al-Cu-Li alloy during hot compression was observed via comparative characterization. The effects of dynamic precipitation and particle stimulated nucleation (PSN) on dynamic recrystallization have been analyzed systematically. At lower temperatures and higher strain rates, microshear band leads to a low power dissipation and provides preferential nucleation sites for T1 precipitates. With temperature increases (
ISSN:0925-8388
1873-4669
DOI:10.1016/j.jallcom.2022.164716