Low Cycle Fatigue Behavior of VVER-440 Reactor Pressure Vessel Steels at Isothermal Condition

Balazs Fekete; Peter Bereczki; Peter Trampus

doi:10.4028/www.scientific.net/MSF.812.47

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HomeMaterials Science ForumMaterials Science Forum Vol. 812Low Cycle Fatigue Behavior of VVER-440 Reactor...

Low Cycle Fatigue Behavior of VVER-440 Reactor Pressure Vessel Steels at Isothermal Condition

Abstract:

The fatigue life of the structural materials 15H2MFA and 08H18N10T of VVER-440 reactor pressure vessel under completely reserved total strain controlled tests were investigated. The measurements were carried out with isothermal condition at 260°C on GLEEBLE 3800 servo-hydraulic thermal mechanical simulator. The isothermal low cycle fatigue results were evaluated with the plastic strain based Coffin-Manson law, and plastic strain energy based model as well. It was shown that both methods are able to predict the fatigue life of reactor pressure vessel steels accurately.

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Periodical:

Materials Science Forum (Volume 812)

Pages:

47-52

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.812.47

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Online since:

February 2015

Authors:

Balazs Fekete*, Peter Bereczki, Peter Trampus

Keywords:

Coffin-Manson Law, Energy Based Prediction, Isothermal Fatigue, Low Cycle Fatigue, Pressure Vessel, Reactor

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