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Stability of Ultra-fine and Nano-grains After Severe Plastic Deformation: a Critical Review by Farzad Khodabakhshi; Mohsen Mohammadi; Adrian P. Gerlich is a Engineering article available to read on EtoBox.

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In this critical note, the thermal stability behavior of ultra-fine grained (UFG) and nano-structured (NS) metals and alloys produced through severe plastic deformation (SPD) techniques is reviewed. For this case, the common engineering metals with body-centered cubic (BCC), face-centered cubic (FCC), and hexagonal close-packed (HCP) crystal structures such as aluminum, copper, nickel, magnesium, steel, titanium, and their relating alloys were assessed. Microstructural evolution in these severely deformed materials following postprocessing annealing treatment was investigated for various times and temperatures below the recrystallization point. The microstructure development reported in the literature was studied in terms of the stable grain structures correlated with different levels of plastic straining. The stacking fault energy (SFE) is noted to be a key issue which has a critical influence in predicting the coalescence or coarsening behavior of ultra-fine and nanoscale grains after SPD treatment by controlling the cross-slip phenomenon for screw dislocations.

Who reads Stability of Ultra-fine and Nano-grains After Severe Plastic Deformation: a Critical Review?

Author

Farzad Khodabakhshi; Mohsen Mohammadi; Adrian P. Gerlich

Publisher

Springer Science and Business Media LLC

Published

2021

Language

EN

Field

Engineering (Physical Sciences)