The influence of PWHT regime on microstructure and creep rupture behaviour of dissimilar T92/TP316H ferritic/austenitic welded joints with Ni-based filler metal

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081723%3A_____%2F11%3A00376007" target="_blank" >RIV/68081723:_____/11:00376007 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.4149/km_2011_6_417" target="_blank" >http://dx.doi.org/10.4149/km_2011_6_417</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.4149/km_2011_6_417" target="_blank" >10.4149/km_2011_6_417</a>

Jazyk výsledku

angličtina

Název v původním jazyce

The influence of PWHT regime on microstructure and creep rupture behaviour of dissimilar T92/TP316H ferritic/austenitic welded joints with Ni-based filler metal

Popis výsledku v původním jazyce

In this paper the dissimilar welded joints between the ferritic (tempered martensitic) steel T92 and the non-stabilised austenitic steel TP316H were investigated in terms of microstructure and creep rupture behaviour characterisation. The welded joints were prepared by the TIG method using the Ni-based filler metal Nirod 600 (Inconel-type). After the welding, the individual weldments were subjected to the two different regimes of post-weld heat treatment (PWHT), either the ?classical PWHT (i.e. subcritical tempering ? below Ac1 temperature) or the so-called ?full PWHT including the re-normalisation. The use of ?classical PWHT preserved microstructural gradient in the ferritic steel heat-affected zone (HAZ), which led to a premature creep failure by the?type IV cracking mode. In contrast, the application of ?full PWHT eliminated the critical HAZ region of T92 steel and changed the creep failure mode to the ?interfacial cracking between the ferritic steel and the Ni-based weld metal. Co

Název v anglickém jazyce

The influence of PWHT regime on microstructure and creep rupture behaviour of dissimilar T92/TP316H ferritic/austenitic welded joints with Ni-based filler metal

Popis výsledku anglicky

In this paper the dissimilar welded joints between the ferritic (tempered martensitic) steel T92 and the non-stabilised austenitic steel TP316H were investigated in terms of microstructure and creep rupture behaviour characterisation. The welded joints were prepared by the TIG method using the Ni-based filler metal Nirod 600 (Inconel-type). After the welding, the individual weldments were subjected to the two different regimes of post-weld heat treatment (PWHT), either the ?classical PWHT (i.e. subcritical tempering ? below Ac1 temperature) or the so-called ?full PWHT including the re-normalisation. The use of ?classical PWHT preserved microstructural gradient in the ferritic steel heat-affected zone (HAZ), which led to a premature creep failure by the?type IV cracking mode. In contrast, the application of ?full PWHT eliminated the critical HAZ region of T92 steel and changed the creep failure mode to the ?interfacial cracking between the ferritic steel and the Ni-based weld metal. Co

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

—

Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2011

Kód důvěrnosti údajů

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

Název periodika

Kovové materiály

ISSN

0023-432X

e-ISSN

—

Svazek periodika

49

Číslo periodika v rámci svazku

6

Stát vydavatele periodika

SK - Slovenská republika

Počet stran výsledku

10

Strana od-do

417-426

Kód UT WoS článku

000298835000005

EID výsledku v databázi Scopus

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