Creep Damage Tolerance Factor λ of Selected Creep-Resistant Steels

Václav Sklenička; Květa Kuchařová; Jiří Dvořák; Marie Kvapilová; Petr Král

doi:10.4028/www.scientific.net/KEM.754.47

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HomeKey Engineering MaterialsKey Engineering Materials Vol. 754Creep Damage Tolerance Factor λ of Selected...

Creep Damage Tolerance Factor λ of Selected Creep-Resistant Steels

Abstract:

The creep damage tolerance factor λ as an important outcome of the continuum damage mechanics approach has been used to asses the creep fracture mode and the susceptibility of material to localized cracking at strain concentrations. In this work, using sets of our earlier published creep data of three advanced ferritic creep-resistant steels (T23 low alloy steel, P91 and P92 chromium steels) are analysed in terms of the creep damage tolerance factor λ. It was found that the value of the creep damage factor λ is not constant and depends on the creep loading conditions. The data analysis is followed by fractographic investigations, which is used to identify the creep fracture mode (s) experimentally.

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Periodical:

Key Engineering Materials (Volume 754)

Pages:

47-50

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.754.47

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Online since:

September 2017

Authors:

Václav Sklenička*, Květa Kuchařová, Jiří Dvořák, Marie Kvapilová, Petr Král

Keywords:

Creep, Creep Damage Tolerance Factor λ, Creep Fracture Plasticity, Fracture Mode

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