Single crystal yield criterion for chromium based on atomisticnstudies of isolated 1/2[111] screw dislocations

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081723%3A_____%2F20%3A00531191" target="_blank" >RIV/68081723:_____/20:00531191 - isvavai.cz</a>
Result on the web
<a href="https://www.sciencedirect.com/science/article/pii/S0749641919308940?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0749641919308940?via%3Dihub</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.ijplas.2020.102733" target="_blank" >10.1016/j.ijplas.2020.102733</a>

Result language
angličtina
Original language name
Single crystal yield criterion for chromium based on atomisticnstudies of isolated 1/2[111] screw dislocations
Original language description
Using the recently developed Bond Order Potential for Cr, we investigate the mobility of isolatedn1/2[111] screw dislocations under stress at 0 K. These studies provide the dependence of thencritical resolved shear stress (i.e., the Peierls stress) on the orientation of the maximum resolvednshear stress plane and on the shear stress perpendicular to the slip direction. Similar studies arenmade for loading in tension and compression to show that the onset of yielding in Cr singlencrystals can be described using a combination of the shear stresses parallel and perpendicular tonthe slip direction. Based on these results, we develop a single crystal yield criterion for Cr thatnincludes all non-Schmid contributions to the Peierls stress. This criterion is used to predict thenshape of the yield surface and compare it with the regular Tresca’s hexagon arising from thenSchmid law. For all directions of uniaxial load, the criterion is used to quantify the character andnmagnitude of the tension-compression asymmetry
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10302 - Condensed matter physics (including formerly solid state physics, supercond.)

Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2020
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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