Enhancement of Creep Lifetime of Aluminum through Severe Plastic Deformation

This work investigates the creep behavior of severely deformed commercial aluminum. The commercial aluminum was processed by helical rolling (HR) and equal-channel angular pressing (ECAP) at room temperature. During these processes, the equivalent strain up to about 4 was imposed into the as-receive...

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Published in:Crystals (Basel) 2024-03, Vol.14 (3), p.230
Main Authors: Král, Petr, Dvořák, Jiří, Kvapilová, Marie, Kadomtsev, Andrej G., Sklenička, Václav
Format: Article
Language:English
Subjects:
Alloys
Aluminum
creep behavior
Creep tests
Equal channel angular pressing
Grain boundaries
Grain size
Investigations
Microstructure
Plastic deformation
Room temperature
severe plastic deformation
Shear strain
Strain
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cited_by cdi_FETCH-LOGICAL-c409t-7334624b22928734178d33aedd5acd7fc4d14be66954f6563acb3b3e654859793
cites cdi_FETCH-LOGICAL-c409t-7334624b22928734178d33aedd5acd7fc4d14be66954f6563acb3b3e654859793
container_end_page
container_issue 3
container_start_page 230
container_title Crystals (Basel)
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creator Král, Petr
Dvořák, Jiří
Kvapilová, Marie
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description This work investigates the creep behavior of severely deformed commercial aluminum. The commercial aluminum was processed by helical rolling (HR) and equal-channel angular pressing (ECAP) at room temperature. During these processes, the equivalent strain up to about 4 was imposed into the as-received material. The creep testing at 200 °C revealed that HR and ECAP significantly increased the time to fracture compared to the as-received material. The stress dependences showed that the value of stress exponent n decreased with the value of the imposed strain. The stress-change tests showed that as-received and severely deformed states exhibited different recovery rates after unloading. The microstructure analysis showed that creep behavior was influenced by the microstructure formed during severe plastic deformation. The relationships between creep behavior and microstructure in the investigated states are discussed.
doi_str_mv 10.3390/cryst14030230
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subjects Alloys
Aluminum
creep behavior
Creep tests
Equal channel angular pressing
Grain boundaries
Grain size
Investigations
Microstructure
Plastic deformation
Room temperature
severe plastic deformation
Shear strain
Strain
title Enhancement of Creep Lifetime of Aluminum through Severe Plastic Deformation
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