Minor Phase Evolution in Homogeneous T24 Welds

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F25870807%3A_____%2F14%3A%230000382" target="_blank" >RIV/25870807:_____/14:#0000382 - isvavai.cz</a>

Výsledek na webu

<a href="http://www.scientific.net" target="_blank" >http://www.scientific.net</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.4028/www.scientific.net/MSF.782.143" target="_blank" >10.4028/www.scientific.net/MSF.782.143</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Minor Phase Evolution in Homogeneous T24 Welds

Popis výsledku v původním jazyce

This paper deals with the characterization of hardness, microstructure and precipitation processes in homogeneous T24 welds in the as-welded state and after laboratory PWHT at 745°C for 1 and 6 hours, respectively. Tempering of a T24 steel during qualityheat treatment is accompanied by intensive precipitation of MX, M7C3 and M23C6 particles in the bainitic matrix. It was found that SAW welding resulted in a pronounced dissolution of minor phases in the base material close to the joined faces. In the as-welded state microstructure of the CGHAZ was bainitic and the maximum HV10 value in this part of the HAZ reached 382 units. The dominant strengthening mechanism in the CGHAZ was attributed to transformation strengthening due to decomposition of austenite to bainite. Also the HV10 level in the bainitic filler metal (ca 320 HV10) was very close to the maximum acceptable hardness. PWHT at 745°C for 1 hour resulted in a significant decrease of hardness in the weld metal and especially in th

Název v anglickém jazyce

Minor Phase Evolution in Homogeneous T24 Welds

Popis výsledku anglicky

This paper deals with the characterization of hardness, microstructure and precipitation processes in homogeneous T24 welds in the as-welded state and after laboratory PWHT at 745°C for 1 and 6 hours, respectively. Tempering of a T24 steel during qualityheat treatment is accompanied by intensive precipitation of MX, M7C3 and M23C6 particles in the bainitic matrix. It was found that SAW welding resulted in a pronounced dissolution of minor phases in the base material close to the joined faces. In the as-welded state microstructure of the CGHAZ was bainitic and the maximum HV10 value in this part of the HAZ reached 382 units. The dominant strengthening mechanism in the CGHAZ was attributed to transformation strengthening due to decomposition of austenite to bainite. Also the HV10 level in the bainitic filler metal (ca 320 HV10) was very close to the maximum acceptable hardness. PWHT at 745°C for 1 hour resulted in a significant decrease of hardness in the weld metal and especially in th

Druh

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

CEP obor

JG - Hutnictví, kovové materiály

OECD FORD obor

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Projekt

<a href="/cs/project/ED0040%2F01%2F01" target="_blank" >ED0040/01/01: Regionální materiálově technologické výzkumné centrum</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2014

Kód důvěrnosti údajů

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

Název periodika

Materials Science Forum

ISSN

1662-9752

e-ISSN

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Svazek periodika

782

Číslo periodika v rámci svazku

XV

Stát vydavatele periodika

CH - Švýcarská konfederace

Počet stran výsledku

5

Strana od-do

143-148

Kód UT WoS článku

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EID výsledku v databázi Scopus

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