Rolling-Contact Hardening Evaluated by Indentation

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25510%2F16%3A39901935" target="_blank" >RIV/00216275:25510/16:39901935 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.4028/www.scientific.net/DDF.368.11" target="_blank" >http://dx.doi.org/10.4028/www.scientific.net/DDF.368.11</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.4028/www.scientific.net/DDF.368.11" target="_blank" >10.4028/www.scientific.net/DDF.368.11</a>

Result language
angličtina
Original language name
Rolling-Contact Hardening Evaluated by Indentation
Original language description
The operational degradation of surface layers due to a rolling contact process was simulated for Hadfield steel by a special testing rig. A specific limited state based on cumulative depletion of plasticity was achieved. Precise evaluation of the surface layer's mechanical parameters is necessary for a service life prediction. Very low depth of localized dislocation hardening process doesn't allow the standard mechanical testing. The comparative instrumented indentation tests using Vickers and cylindrical indenter were used for evaluation of defined stage of surface degradation process. The intensity and reach of deformation hardening are partially limiting for particular methodology. The yield stress of surface layers was estimated according to an analytical model of uniaxial vs. indentation plastic flow ratio.
Czech name
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Czech description
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Project
<a href="/en/project/TE01020038" target="_blank" >TE01020038: Competence Center of Railway Vehicles</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2016
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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