Creep Behaviour and Microstructure of a Heterogeneous P23/P91 Weld

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

Creep Behaviour and Microstructure of a Heterogeneous P23/P91 Weld

Popis výsledku v původním jazyce

The structural integrity of welded components operated at elevated temperatures is of key importance in power plant applications. Long-term creep exposure of heterogeneous welds is accompanied by redistribution of interstitial elements which strongly affects microstructural evolution in the vicinity of the fusion zone between the low and high alloy materials. The paper summarises results of investigations on creep rupture properties and minor phase evolution in the P23/P91 heterogeneous weld during creep exposure at 500, 550 and 600C. Results of creep rupture tests on the P23/P91 heterogeneous weld were close or slightly below the lower limit of the 20% scatter band around the standardized curve for creep strength of the P23 steel. In the course of creep exposure the development of creep damage could simultaneously take place in several critical areas of the weldment but the location of the final failure was determined by the ?weakest area? for given testing parameters.

Název v anglickém jazyce

Creep Behaviour and Microstructure of a Heterogeneous P23/P91 Weld

Popis výsledku anglicky

The structural integrity of welded components operated at elevated temperatures is of key importance in power plant applications. Long-term creep exposure of heterogeneous welds is accompanied by redistribution of interstitial elements which strongly affects microstructural evolution in the vicinity of the fusion zone between the low and high alloy materials. The paper summarises results of investigations on creep rupture properties and minor phase evolution in the P23/P91 heterogeneous weld during creep exposure at 500, 550 and 600C. Results of creep rupture tests on the P23/P91 heterogeneous weld were close or slightly below the lower limit of the 20% scatter band around the standardized curve for creep strength of the P23 steel. In the course of creep exposure the development of creep damage could simultaneously take place in several critical areas of the weldment but the location of the final failure was determined by the ?weakest area? for given testing parameters.

Druh

D - Stať ve sborníku

CEP obor

JG - Hutnictví, kovové materiály

OECD FORD obor

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Projekt

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Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2009

Kód důvěrnosti údajů

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

Název statě ve sborníku

Conference Proceedings Metal 2009

ISBN

978-80-87294-10-9

ISSN

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e-ISSN

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Počet stran výsledku

7

Strana od-do

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Název nakladatele

TANGER, Ltd.

Místo vydání

Ostrava

Místo konání akce

Hradec nad Moravicí

Datum konání akce

1. 1. 2009

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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