Journal
INTERNATIONAL MATERIALS REVIEWS
Volume 61, Issue 8, Pages 495-512Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/09506608.2016.1191808
Keywords
Hall-Petch; Grain-size strengthening; Nanocrystalline metals; Dislocations
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Funding
- U.S. Army Research Office [W911NF-14-1-0539]
- Institute for Soldier Nanotechnologies at MIT
- U.S. National Science Foundation [CMMI-1332789]
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Refining a metal's grain size can result in dramatic increases in strength, and the magnitude of this strengthening increment can be estimated using the Hall-Petch equation. Since the Hall-Petch equation was proposed, there have been many experimental studies supporting its applicability to pure metals, intermetallics and multi-phase alloys. In this article, we gather the grain-size strengthening data from the Hall-Petch studies on pure metals and use this aggregated data to calculate best estimates of these metals' Hall-Petch parameters. We also use this aggregated data to re-evaluate the various models developed to physically support the Hall-Petch scaling.
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