Neutron diffraction studies of an influence of weld residual stresses on fatigue strength of high-strength steels welds

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389005%3A_____%2F24%3A00617364" target="_blank" >RIV/61389005:_____/24:00617364 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.euronuclear.org/scientific-resources/conference-proceedings/" target="_blank" >https://www.euronuclear.org/scientific-resources/conference-proceedings/</a>

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Neutron diffraction studies of an influence of weld residual stresses on fatigue strength of high-strength steels welds

Popis výsledku v původním jazyce

As a continuation of our previous studies presented in RRFM 2023 conference, in this contribution we present the results of neutron diffraction investigation in which the effect of weld metal chemical composition having a direct relation to phasentransformation temperature on residual stress distribution in the vicinity of highstrength steel test weld and on their fatigue strength was studied for two types of electrodes. It has also been recognized that residual stresses play a critical role innthe fatigue behavior of welds. The quality of the welds depends besides other things on the residual stresses in the vicinity of the welds. It has been found that a better fatigue strength of welded joints, e.g. longer life time of fatigue loaded weldnstructures, can be achieved with a smooth transition between the weld and the base material when minimizing stress concentration. Therefore, the influence of the weld metal chemical composition on residual stress distribution in the vicinity of test welds was studied. Butt welds were prepared in a high-strength steel using two basic shielded metal arc electrodes ─ one conventional producing a bainitic weld metal (OK Tubrod 14.03) and one experimental low temperature transformation (LTT) electrode depositing a martensitic weld metal.n

Název v anglickém jazyce

Neutron diffraction studies of an influence of weld residual stresses on fatigue strength of high-strength steels welds

Popis výsledku anglicky

As a continuation of our previous studies presented in RRFM 2023 conference, in this contribution we present the results of neutron diffraction investigation in which the effect of weld metal chemical composition having a direct relation to phasentransformation temperature on residual stress distribution in the vicinity of highstrength steel test weld and on their fatigue strength was studied for two types of electrodes. It has also been recognized that residual stresses play a critical role innthe fatigue behavior of welds. The quality of the welds depends besides other things on the residual stresses in the vicinity of the welds. It has been found that a better fatigue strength of welded joints, e.g. longer life time of fatigue loaded weldnstructures, can be achieved with a smooth transition between the weld and the base material when minimizing stress concentration. Therefore, the influence of the weld metal chemical composition on residual stress distribution in the vicinity of test welds was studied. Butt welds were prepared in a high-strength steel using two basic shielded metal arc electrodes ─ one conventional producing a bainitic weld metal (OK Tubrod 14.03) and one experimental low temperature transformation (LTT) electrode depositing a martensitic weld metal.n

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

10302 - Condensed matter physics (including formerly solid state physics, supercond.)

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2024

Kód důvěrnosti údajů

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

Název statě ve sborníku

Proceedings of European Research Reactor Conference 2024 (RRFM 2024)

ISBN

978-92-95064-40-9

ISSN

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e-ISSN

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Počet stran výsledku

6

Strana od-do

10-16

Název nakladatele

European Nuclear Society

Místo vydání

Warsaw

Místo konání akce

Warsaw

Datum konání akce

21. 4. 2024

Typ akce podle státní příslušnosti

EUR - Evropská akce

Kód UT WoS článku

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