Creep Damage Tolerance Factor λ of Selected Creep-Resistant Steels

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 thr...

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Bibliographic Details
Published in:Key engineering materials 2017-09, Vol.754, p.47-50
Main Authors: Král, Petr, Kuchařová, Květa, Kvapilová, Marie, Sklenička, Václav, Dvořák, Jiří
Format: Article
Language:English
Subjects:
Chromium steels
Continuum damage mechanics
Cracking (fracturing)
Creep strength
Damage tolerance
Data analysis
Ferritic stainless steels
Fracture mechanics
Heat resistant steels
High strength steels
Low alloy steels
Tomography
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Summary: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.
ISSN:1013-9826
1662-9795
1662-9795
DOI:10.4028/www.scientific.net/KEM.754.47