The Influence of hte Composition of the Weld Metal on the Stress Fields around the Welds on the High-Sttrength Ferritic Steel Weldox 700

Kód výsledku v IS VaVaI

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Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

The Influence of hte Composition of the Weld Metal on the Stress Fields around the Welds on the High-Sttrength Ferritic Steel Weldox 700

Popis výsledku v původním jazyce

The high-strength steels are developed in order to provide the favorable mechanical properties and higher corrosion resistance in relation to conventional carbon steel grades Weldox 700 is such a general structural steel with a minimum yield strength of 650 - 700 MPa. Typical applications are very demanding e.g. load-bearing, structures, pipes, bridges, steel structures storage tanks etc. which are very often composed of the welded parts. The quality of the welds depends besides other things on the residual stresses in the vicinity of the welds. 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 and one experimental low temperature transformation (LTT) electrode depositing a martensitic weld metal. Welding was done under restraint in a test frame. Residual stress components were measured across the weld using neutron diffraction after removing the test weld from the frame. It was found that the stresses were generally on a lower level for the LTT weld. The largest difference was seen for the transverse residual stress some distance into the heat affected zone.

Název v anglickém jazyce

The Influence of hte Composition of the Weld Metal on the Stress Fields around the Welds on the High-Sttrength Ferritic Steel Weldox 700

Popis výsledku anglicky

The high-strength steels are developed in order to provide the favorable mechanical properties and higher corrosion resistance in relation to conventional carbon steel grades Weldox 700 is such a general structural steel with a minimum yield strength of 650 - 700 MPa. Typical applications are very demanding e.g. load-bearing, structures, pipes, bridges, steel structures storage tanks etc. which are very often composed of the welded parts. The quality of the welds depends besides other things on the residual stresses in the vicinity of the welds. 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 and one experimental low temperature transformation (LTT) electrode depositing a martensitic weld metal. Welding was done under restraint in a test frame. Residual stress components were measured across the weld using neutron diffraction after removing the test weld from the frame. It was found that the stresses were generally on a lower level for the LTT weld. The largest difference was seen for the transverse residual stress some distance into the heat affected zone.

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

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Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2023

Kód důvěrnosti údajů

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

Název statě ve sborníku

Proceedings of the RRFM European Research Reactor Conference 2023

ISBN

978-92-95064-39-3

ISSN

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e-ISSN

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Počet stran výsledku

9

Strana od-do

11-19

Název nakladatele

European Nuclear Society

Místo vydání

Brussel

Místo konání akce

Antwerp

Datum konání akce

16. 4. 2023

Typ akce podle státní příslušnosti

EUR - Evropská akce

Kód UT WoS článku

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