Secondary Hardening of Low-Alloyed Creep-Resistant Steel Welds

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27230%2F14%3A86091314" target="_blank" >RIV/61989100:27230/14:86091314 - 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

Secondary Hardening of Low-Alloyed Creep-Resistant Steel Welds

Popis výsledku v původním jazyce

The T24 steel represents the new generation of low-alloyed creep resistant steels with higher creep resistance and lower carbon content. It was designed as a prospective material for membrane waterwalls of ultra super critical (USC) power plants also forthe possibility to avoid preheating and post weld heat treatment (PWHT) during welding. However, our investigations concerning secondary hardening of vanadium containing low-alloyed steels show that non-tempered welded joints undergo a significant increase in hardness during exposure at operating temperature. The results then imply that PWHT of T24 steel welds is necessary and this idea is in the present time supported by several troubles with new installations of USC blocks in Europe.

Název v anglickém jazyce

Secondary Hardening of Low-Alloyed Creep-Resistant Steel Welds

Popis výsledku anglicky

The T24 steel represents the new generation of low-alloyed creep resistant steels with higher creep resistance and lower carbon content. It was designed as a prospective material for membrane waterwalls of ultra super critical (USC) power plants also forthe possibility to avoid preheating and post weld heat treatment (PWHT) during welding. However, our investigations concerning secondary hardening of vanadium containing low-alloyed steels show that non-tempered welded joints undergo a significant increase in hardness during exposure at operating temperature. The results then imply that PWHT of T24 steel welds is necessary and this idea is in the present time supported by several troubles with new installations of USC blocks in Europe.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

JP - Průmyslové procesy a zpracování

OECD FORD obor

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Projekt

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Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2014

Kód důvěrnosti údajů

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

Název periodika

Metalurgija = Metallurgy

ISSN

0543-5846

e-ISSN

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Svazek periodika

53

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

HR - Chorvatská republika

Počet stran výsledku

4

Strana od-do

25-28

Kód UT WoS článku

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EID výsledku v databázi Scopus

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