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Mechanical properties of stabilized nanocrystalline FCC metals

Authors :
Garritt J. Tucker
Douglas E. Spearot
Ankit Gupta
Gregory B. Thompson
Source :
Journal of Applied Physics. 126:110901
Publication Year :
2019
Publisher :
AIP Publishing, 2019.

Abstract

In this perspective, recent advances and current research challenges concerning the mechanical properties of stabilized nanocrystalline face-centered cubic (FCC) metals are discussed. First, a brief review of key experiments and modeling efforts over the last two decades is provided, with a focus on elucidating the mechanisms associated with plastic yield, hardening, and microstructure stabilization in nanocrystalline metals. This prior work has provided an understanding of the transition between dislocation-based and grain boundary-mediated mechanisms in plasticity and has identified several strategies to mitigate temperature or stress driven grain growth. Yet, the consequence of various stabilization methods on mechanical properties is not well understood. Future research challenges are presented in order to address this scientific gap, most critically the need to include grain boundary chemistry or grain boundary phases resulting from stabilization methods in new mechanistic theories for mechanical properties of nanocrystalline FCC metals.

Details

ISSN :
10897550 and 00218979
Volume :
126
Database :
OpenAIRE
Journal :
Journal of Applied Physics
Accession number :
edsair.doi...........d81c881015866b85fbc92aae5ae7478e
Full Text :
https://doi.org/10.1063/1.5114706