Published April 11, 2003
| Supplemental Material + Published
Journal Article
Open
Role of core polarization curvature of screw dislocations in determining the Peierls stress in bcc Ta: A criterion for designing high-performance materials
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1.
California Institute of Technology
Chicago
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Abstract
We use a family of embedded atom model potentials all based on accurate quantum-mechanical calculations to study the relation between Peierls stress and core properties of the 1/2a‹111› screw dislocation in bcc tantalum (Ta). We find that the Peierls stress (σP) is a function of the core-polarization curvature (II) near the equilibrium core configuration. Our results suggest that the computationally available quantity II is a useful criterion for designing high-performance materials.
Additional Information
© 2003 The American Physical Society. Received: 21 January 2003; published: 28 April 2003. We thank Peter A. Schultz of Sandia National Lab for his help with the QM calculations. This research was supported by Caltech Project No. DoE-ASC-ASAP.Attached Files
Published - WANprb03a.pdf
Supplemental Material - WANprb03aREADME.TXT
Supplemental Material - WANprb03asuppforref.ps
Supplemental Material - WANprb03asuppl.ps
Files
WANprb03aREADME.TXT
Additional details
- Eprint ID
- 5623
- Resolver ID
- CaltechAUTHORS:WANprb03
- Department of Energy (DOE)
- Created
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2006-10-26Created from EPrint's datestamp field
- Updated
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2021-11-08Created from EPrint's last_modified field
- Other Numbering System Name
- WAG
- Other Numbering System Identifier
- 0512