Abstract
We present a theoretical model that predicts the peak strength of polycrystalline metals based on the activation energy (or stress) required to cause deformation via amorphization. Building on extensive earlier work, this model is based purely on materials properties, requires no adjustable parameters, and is shown to accurately predict the strength of four exemplar metals (fcc, bcc, and hcp, and an alloy). This framework reveals new routes for design of more complex high-strength materials systems, such as compositionally complex alloys, multiphase systems, nonmetals, and composite structures.
- Received 14 January 2020
- Accepted 10 February 2020
DOI:https://doi.org/10.1103/PhysRevLett.124.125501
Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI.
Published by the American Physical Society
Physics Subject Headings (PhySH)
Viewpoint
Deadlocked Order and Disorder in the Strongest Metals
Published 25 March 2020
The peak strength of a metal occurs when the boundaries between its grains and the grains themselves have the same strength.
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