Six decades of the Hall-Petch effect - a survey of grain-size strengthening studies on pure metals

• Main Authors: Cordero, Zachary Copoulos (Contributor), Knight, Braden E. (Contributor), Schuh, Christopher A (Contributor)
• Other Authors: Massachusetts Institute of Technology. Department of Materials Science and Engineering (Contributor), Massachusetts Institute of Technology. Department of Mechanical Engineering (Contributor), Schuh, Christopher A. (Contributor)
• Format: Article
• Language: English
• Published: Maney Publishing, 2017-12-07T20:24:54Z.
• Subjects: Article
• Online Access: Get fulltext

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.
United States. Army Research Office (Grant W911NF-14-1-0539)
National Science Foundation (U.S.) (Grant CMMI-1332789)