Comparison of failure mechanisms of the weld joints of P91 and P92 steels during the long-term creep testsComparison of failure mechanisms of the weld joints of P91 and P92 steels during the long-term creep tests

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

Comparison of failure mechanisms of the weld joints of P91 and P92 steels during the long-term creep testsComparison of failure mechanisms of the weld joints of P91 and P92 steels during the long-term creep tests

Popis výsledku v původním jazyce

One-side trial weld joints of W type were prepared from pipes of P91 and P92 type steels using GTAW & SMAW method in conditions used in idustrial praxis. Long-term creep tests to the rupture of smooth cross-weld samples have been carried out, the longesttime to rupture of 45,811 hrs was achieved. The creep strengths of weld joints for 100,000 hrs were calculated. Fractographic analysis, hardness measurement and study of microstructure have been performed. Changes of microstructure were correlated withthe creep strength. Different types of cracking were observed in dependency on conditions of creep test and the type of weld joint. This contribution deals with an assessment of failure mechanisms of the weld joints. An occurrence of individual types offracture is correlated with incoming properties of weldments and with development of substructure during creep tests. In P91 steel weld joint Type I and Type II fractures occurred at high applied stresses at relatively low temperatures, w

Název v anglickém jazyce

Comparison of failure mechanisms of the weld joints of P91 and P92 steels during the long-term creep testsComparison of failure mechanisms of the weld joints of P91 and P92 steels during the long-term creep tests

Popis výsledku anglicky

One-side trial weld joints of W type were prepared from pipes of P91 and P92 type steels using GTAW & SMAW method in conditions used in idustrial praxis. Long-term creep tests to the rupture of smooth cross-weld samples have been carried out, the longesttime to rupture of 45,811 hrs was achieved. The creep strengths of weld joints for 100,000 hrs were calculated. Fractographic analysis, hardness measurement and study of microstructure have been performed. Changes of microstructure were correlated withthe creep strength. Different types of cracking were observed in dependency on conditions of creep test and the type of weld joint. This contribution deals with an assessment of failure mechanisms of the weld joints. An occurrence of individual types offracture is correlated with incoming properties of weldments and with development of substructure during creep tests. In P91 steel weld joint Type I and Type II fractures occurred at high applied stresses at relatively low temperatures, w

Druh

D - Stať ve sborníku

CEP obor

JG - Hutnictví, kovové materiály

OECD FORD obor

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Projekt

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Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2013

Kód důvěrnosti údajů

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

Název statě ve sborníku

Proc. of the 12th International conference on Creep and Fracture of Engineering Materials and Structures

ISBN

978-4-88903-407-3

ISSN

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e-ISSN

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Počet stran výsledku

4

Strana od-do

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Název nakladatele

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Místo vydání

Kyoto, Japan

Místo konání akce

Kyoto, Japan

Datum konání akce

27. 5. 2012

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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