USE OF XRD AND HOLE-DRILLING METHOD FOR DETERMINATION OF RESIDUAL STRESSES GRADIENT IN C45 STEEL AFTER LASER HARDENING

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21340%2F13%3A00214465" target="_blank" >RIV/68407700:21340/13:00214465 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

USE OF XRD AND HOLE-DRILLING METHOD FOR DETERMINATION OF RESIDUAL STRESSES GRADIENT IN C45 STEEL AFTER LASER HARDENING

Popis výsledku v původním jazyce

Laser hardening is a surface treatment method which is successfully used especially when localized hardening of surface is desired. The correct choice of laser hardening parameters must be verified experimentally because the fundamentals of the process rest in structural changes of the material, namely the phase composition and real structure such as appropriate state of residual stress. X-ray diffraction represents the experimental method that has the capability to give these parameters non-destructively in the thin surface layer. In our study, the focus was to ascertain the effect of laser beam width on the depth distribution of residual stresses. The diffraction approach was thus combined with hole-drilling method. The obtained results from both themethods show that the depth distributions of residual stresses have advantageous hook-like shape with tensile stresses on the surface, gradually decreasing to compressive stresses in the depth of approximately 0.3 mm beneath the surface.

Název v anglickém jazyce

USE OF XRD AND HOLE-DRILLING METHOD FOR DETERMINATION OF RESIDUAL STRESSES GRADIENT IN C45 STEEL AFTER LASER HARDENING

Popis výsledku anglicky

Laser hardening is a surface treatment method which is successfully used especially when localized hardening of surface is desired. The correct choice of laser hardening parameters must be verified experimentally because the fundamentals of the process rest in structural changes of the material, namely the phase composition and real structure such as appropriate state of residual stress. X-ray diffraction represents the experimental method that has the capability to give these parameters non-destructively in the thin surface layer. In our study, the focus was to ascertain the effect of laser beam width on the depth distribution of residual stresses. The diffraction approach was thus combined with hole-drilling method. The obtained results from both themethods show that the depth distributions of residual stresses have advantageous hook-like shape with tensile stresses on the surface, gradually decreasing to compressive stresses in the depth of approximately 0.3 mm beneath the surface.

Druh

D - Stať ve sborníku

CEP obor

JG - Hutnictví, kovové materiály

OECD FORD obor

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Projekt

<a href="/cs/project/FR-TI3%2F814" target="_blank" >FR-TI3/814: Optimalizace laserového povrchového zpracování strojních součástí pro zvýšení jejich užitných vlastností</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2013

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

International Conference on Technics, Technologies and Education proceedings

ISBN

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ISSN

1314-9474

e-ISSN

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Počet stran výsledku

6

Strana od-do

1-6

Název nakladatele

Faculty of Technics and Technologies, Trakia University

Místo vydání

Yambol

Místo konání akce

Yambol

Datum konání akce

30. 10. 2013

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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