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

Result code in 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>

Result on the web

<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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Result language

angličtina

Original language name

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

Original language description

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

Czech name

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Czech description

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Type

D - Article in proceedings

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

2024

Confidentiality

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

Article name in the collection

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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Number of pages

6

Pages from-to

10-16

Publisher name

European Nuclear Society

Place of publication

Warsaw

Event location

Warsaw

Event date

Apr 21, 2024

Type of event by nationality

EUR - Evropská akce

UT code for WoS article

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