Creep behaviour of 15-15Ti(Si) austenitic steel in air and in liquid lead at 550°C

Strafella, Alessandra; Coglitore, Antonino; Salernitano, E.

doi:10.1016/j.prostr.2017.04.061

Cited by 7 publications

(2 citation statements)

References 4 publications

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“…In the past two decades, extensive experimental investigations have been carried out to understand the effects of a wide spectrum of parameters on tensile [464,507], fatigue [53,481,500,502,505,[508][509][510], fracture toughness [467,468], creep [511][512][513][514][515][516][517][518], and creepfatigue properties [231,495] of T91 F/M and similar steels exposed to liquid Pb/LBE. This subsection reviews the LME characteristics of T91 (and similar) F/M steels and their welds in contact with liquid Pb/LBE, attempting to unveil the underlying mechanisms that affect crack initiation and propagation upon the LME of these steels.…”

Section: Factors Affecting the Lme Of F/m Steels In Liquid Pb/lbementioning

confidence: 99%

Environmental degradation of structural materials in liquid lead- and lead-bismuth eutectic-cooled reactors

Gong

Short

Auger

et al. 2022

Progress in Materials Science

161

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Section: Factors Affecting the Lme Of F/m Steels In Liquid Pb/lbementioning

confidence: 99%

Environmental degradation of structural materials in liquid lead- and lead-bismuth eutectic-cooled reactors

Gong

Short

Auger

et al. 2022

Progress in Materials Science

161

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“…It means that lead changes both mode and type of fracture: from mixed ductile/brittle to total brittle and, referring to brittle mode, from transgranular to intergranular type. That is the effect of liquid metal embrittlement [13].…”

Section: Morphological and Microstructural Characterizationmentioning

confidence: 99%

15-15Ti(Si) austenitic steel: creep behaviour in hostile environment

Strafella

Coglitore

Fabbri

et al. 2017

Frattura Ed Integrità Strutturale

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This work aims at studying the creep behaviour of 15-15Ti(Si) austenitic steel, under uniaxial stress (range of 300-560 MPa), and its interaction with liquid lead. The steel was tested to verify its sensitivity to Liquid Metal Embrittlement (LME) and to simulate its behaviour in operating thermal and mechanical stress conditions of the IV generation Lead-cooled fast reactor. The experimental results permitted to plot the time-strain creep curve and the characteristic Norton-based curve, simulating the creep behaviour at all stress values. The comparison between the creep curves in air and in lead showed that the LME produces a decrease of creep-rupture time, a reduction of creep strain and then the loss of steel ductility. Moreover, the raw material and fracture surfaces were analyzed by Optical Microscope and Scanning Electron Microscope (SEM). SEM micrographs highlighted that lead changes both the mode and the type of specimen fracture. In addition, it was analyzed the lead action time, as the time after which the corrosion appears with macroscopic effects. Although some tests are still ongoing, it can be assumed that at high stresses, LME takes place after a long time of steel/lead contact while at low stresses, LME tends to prevail on creep effect.

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Corrosion resistance of 15–15Ti and 316Ti austenitic steels as fuel cladding in liquid lead-bismuth eutectic at 550 ℃: The dominant role of grain structure

et al. 2023

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Creep behaviour of 15-15Ti(Si) austenitic steel in air and in liquid lead at 550°C

Cited by 7 publications

References 4 publications

Environmental degradation of structural materials in liquid lead- and lead-bismuth eutectic-cooled reactors

Environmental degradation of structural materials in liquid lead- and lead-bismuth eutectic-cooled reactors

15-15Ti(Si) austenitic steel: creep behaviour in hostile environment

Corrosion resistance of 15–15Ti and 316Ti austenitic steels as fuel cladding in liquid lead-bismuth eutectic at 550 ℃: The dominant role of grain structure

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