Isothermal and thermal–mechanical fatigue of VVER-440 reactor pressure vessel steels

Fekete, Balázs; Trampus, Péter

doi:10.1016/j.jnucmat.2015.01.067

Cited by 13 publications

(5 citation statements)

References 25 publications

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“…Low cycle fatigue test was carried out until the force needed for the given elongation was reduced to its 75% of its original value. Details of fatigue tests and final cracks and material test under microscope can be found in [7]. Here we want to present the acoustic emission results measured parallel to fatigue test.…”

Section: Low Cycle Fatigue Testsmentioning

confidence: 99%

Acoustic Barkhausen Effect Observed in Various Steels

Por

Fekete

Trampus

2017

MSF

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Carrying out fatigue testing of reactor vessel material 15H2MFA acoustic emission sensors were applied to follow changes. It is shown, that observed bursts can be explained only with appearance of acoustic Barkhausen Effect (ABE). Interesting source localization is shown during heat treatment and consecutive stress test, which can be explained acoustic emission due to material transition from martenzit phase to bainite phase. Observed ABE opens the way to apply it in industry using magnetic stresses to provoke acoustic response for characterization of the state of the magnetic materials.

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Section: Low Cycle Fatigue Testsmentioning

confidence: 99%

Acoustic Barkhausen Effect Observed in Various Steels

Por

Fekete

Trampus

2017

MSF

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“…Thus, the nuclear pipelines manufactured by 316LN SS bear the combined action of cyclic mechanical loading and temperature, which is defined as thermomechanical fatigue (TMF) failure. It has become one of the important life limiting factors of pipelines 4–10 . A large number of reports have studied the mechanical behavior and fatigue life of 316LN SS under TMF loading condition 11,12 .…”

Section: Introductionmentioning

confidence: 99%

“…It has become one of the important life limiting factors of pipelines. [4][5][6][7][8][9][10] A large number of reports have studied the mechanical behavior and fatigue life of 316LN SS under TMF loading condition. 11,12 However, research is rarely published about the fatigue crack propagation behavior of 316LN SS under TMF loadings.…”

Section: Introductionmentioning

confidence: 99%

Thermomechanical and isothermal fatigue crack propagation testing method for 316LN austenitic stainless steel

Zheng

Zhao

et al. 2022

Fatigue Fract Eng Mat Struct

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Investigating fatigue crack growth behavior of materials is crucial to the life design and safety evaluation of engineering structures. During the practical service condition, the temperature keeps changing, which cannot be studied by the traditional fatigue crack growth test method at constant temperature. In this study, we focus on constructing a new thermomechanical fatigue (TMF) crack propagation testing method, developing a thermal deformation compensation method, and proposing an equivalent compliance method suitable for variable temperature conditions based on ASTM E647 standard to measure the crack length. Furthermore, the load-and strain-controlled TMF tests under different phase angles are carried out to prove the validity of the new method.

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“…In our recent study [6] a sophisticated test facility for GLEEBLE-3800 thermomechanical physical simulator was developed and its accuracy in performing ISO and TMF tests under service temperature range of VVER-440 nuclear reactors was presented. Furthermore, in this work the material behavior has been evaluated by the Coffin-Manson equation [7], and with plastic strain energy based model.…”

Section: Introductionmentioning

confidence: 99%

“…Furthermore, in this work the material behavior has been evaluated by the Coffin-Manson equation [7], and with plastic strain energy based model. Some preliminary results on the microstructural evolution of the fatigue process were also given in [6].…”

Section: Introductionmentioning

confidence: 99%