uu.seUppsala University Publications
Change search
ReferencesLink to record
Permanent link

Direct link
Determining the minimum grain size in severe plastic deformation process via first-principles calculations
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Materials Theory.
Show others and affiliations
2012 (English)In: Acta Materialia, ISSN 1359-6454, E-ISSN 1873-2453, Vol. 60, no 11, 4506-4513 p.Article in journal (Refereed) Published
Abstract [en]

Although the stacking fault energy (SFE) is a fundamental variable determining the minimum grain size (d(min)) obtainable in severe plastic deformation (SPD) processes, its accurate measurement is difficult. Here we establish the SFEs of binary Pd-Ag, Pd-Cu, Pt-Cu and Ni-Cu solid solutions using the axial interaction model and the supercell model in combination with first-principles theory. The two models yield consistent formation energies. For Pd-Ag, Pd-Cu and Ni-Cu, the theoretical SFEs agree well with those from the experimental measurements. For Pt-Cu no experimental results are available, and thus our calculated SFEs represent the first reasonable predictions. We discuss the correlation of the SFE and d(min), in SPD experiments and show that the d(min) values can be evaluated from first-principles calculations.

Place, publisher, year, edition, pages
2012. Vol. 60, no 11, 4506-4513 p.
Keyword [en]
Minimum grain size, Stacking fault energy, First-principles theory, Severe plastic deformation
National Category
Physical Sciences
URN: urn:nbn:se:uu:diva-179939DOI: 10.1016/j.actamat.2012.04.024ISI: 000306621300015OAI: oai:DiVA.org:uu-179939DiVA: diva2:547107
Available from: 2012-08-27 Created: 2012-08-27 Last updated: 2012-08-27Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full text

Search in DiVA

By author/editor
Johansson, BörjeVitos, Levente
By organisation
Materials Theory
In the same journal
Acta Materialia
Physical Sciences

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 206 hits
ReferencesLink to record
Permanent link

Direct link