Effect of liquid metal embrittlement on low cycle fatigue properties and fatigue crack propagation behavior of a modified 9Cr-1Mo ferritic-martensitic steel in an oxygen-controlled lead-bismuth eutectic environment at 350 °C

Xing Gong; Pierre Marmy; Ling Qin; Bert Verlinden; Martine Wevers; Marc Seefeldt; Serguei Gavrilov

doi:10.1016/j.msea.2014.09.003

Effect of liquid metal embrittlement on low cycle fatigue properties and fatigue crack propagation behavior of a modified 9Cr-1Mo ferritic-martensitic steel in an oxygen-controlled lead-bismuth eutectic environment at 350 °C

Xing Gong, Pierre Marmy, Ling Qin, Bert Verlinden, Martine Wevers, Marc Seefeldt, Serguei Gavrilov

Research output › peer-review

Abstract

The low cycle fatigue properties of T91 have been tested in LBE with oxygen concentrations ranging from 1.16x10-6 to 6x10-10 at 350°C. The results showed that the fatigue life of T91 in a low oxygen concentrated LBE was drastically reduced compared to the lives obtained in a vacuum at the same temperature. The crack propagation modes revealed that the crack propagated mainly transgranularly through the prior austenite grains and laths. No obvious plastic shear strains was present at the crack tip when LME occured. However highly localized strains were detected in the vicinity of the crack tips for specimen tested in vacuum.

Original language	English
Pages (from-to)	406-415
Journal	Materials Science and Engineering: A
Volume	618
DOIs	https://doi.org/10.1016/j.msea.2014.09.003
State	Published - 28 Aug 2014

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Gong, X., Marmy, P., Qin, L., Verlinden, B., Wevers, M., Seefeldt, M., & Gavrilov, S. (2014). Effect of liquid metal embrittlement on low cycle fatigue properties and fatigue crack propagation behavior of a modified 9Cr-1Mo ferritic-martensitic steel in an oxygen-controlled lead-bismuth eutectic environment at 350 °C. Materials Science and Engineering: A, 618, 406-415. https://doi.org/10.1016/j.msea.2014.09.003

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title = "Effect of liquid metal embrittlement on low cycle fatigue properties and fatigue crack propagation behavior of a modified 9Cr-1Mo ferritic-martensitic steel in an oxygen-controlled lead-bismuth eutectic environment at 350 °C",

abstract = "The low cycle fatigue properties of T91 have been tested in LBE with oxygen concentrations ranging from 1.16x10-6 to 6x10-10 at 350°C. The results showed that the fatigue life of T91 in a low oxygen concentrated LBE was drastically reduced compared to the lives obtained in a vacuum at the same temperature. The crack propagation modes revealed that the crack propagated mainly transgranularly through the prior austenite grains and laths. No obvious plastic shear strains was present at the crack tip when LME occured. However highly localized strains were detected in the vicinity of the crack tips for specimen tested in vacuum.",

keywords = "LBE, T91, fatigue, crack propagation",

author = "Xing Gong and Pierre Marmy and Ling Qin and Bert Verlinden and Martine Wevers and Marc Seefeldt and Serguei Gavrilov",

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year = "2014",

month = aug,

day = "28",

doi = "10.1016/j.msea.2014.09.003",

language = "English",

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journal = "Materials Science and Engineering: A",

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Gong, X, Marmy, P, Qin, L, Verlinden, B, Wevers, M, Seefeldt, M & Gavrilov, S 2014, 'Effect of liquid metal embrittlement on low cycle fatigue properties and fatigue crack propagation behavior of a modified 9Cr-1Mo ferritic-martensitic steel in an oxygen-controlled lead-bismuth eutectic environment at 350 °C', Materials Science and Engineering: A, vol. 618, pp. 406-415. https://doi.org/10.1016/j.msea.2014.09.003

Effect of liquid metal embrittlement on low cycle fatigue properties and fatigue crack propagation behavior of a modified 9Cr-1Mo ferritic-martensitic steel in an oxygen-controlled lead-bismuth eutectic environment at 350 °C. / Gong, Xing; Marmy, Pierre; Qin, Ling et al.
In: Materials Science and Engineering: A, Vol. 618, 28.08.2014, p. 406-415.

Research output › peer-review

TY - JOUR

T1 - Effect of liquid metal embrittlement on low cycle fatigue properties and fatigue crack propagation behavior of a modified 9Cr-1Mo ferritic-martensitic steel in an oxygen-controlled lead-bismuth eutectic environment at 350 °C

AU - Gong, Xing

AU - Marmy, Pierre

AU - Qin, Ling

AU - Verlinden, Bert

AU - Wevers, Martine

AU - Seefeldt, Marc

A2 - Gavrilov, Serguei

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PY - 2014/8/28

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N2 - The low cycle fatigue properties of T91 have been tested in LBE with oxygen concentrations ranging from 1.16x10-6 to 6x10-10 at 350°C. The results showed that the fatigue life of T91 in a low oxygen concentrated LBE was drastically reduced compared to the lives obtained in a vacuum at the same temperature. The crack propagation modes revealed that the crack propagated mainly transgranularly through the prior austenite grains and laths. No obvious plastic shear strains was present at the crack tip when LME occured. However highly localized strains were detected in the vicinity of the crack tips for specimen tested in vacuum.

AB - The low cycle fatigue properties of T91 have been tested in LBE with oxygen concentrations ranging from 1.16x10-6 to 6x10-10 at 350°C. The results showed that the fatigue life of T91 in a low oxygen concentrated LBE was drastically reduced compared to the lives obtained in a vacuum at the same temperature. The crack propagation modes revealed that the crack propagated mainly transgranularly through the prior austenite grains and laths. No obvious plastic shear strains was present at the crack tip when LME occured. However highly localized strains were detected in the vicinity of the crack tips for specimen tested in vacuum.

KW - LBE

KW - T91

KW - fatigue

KW - crack propagation

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DO - 10.1016/j.msea.2014.09.003

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Gong X, Marmy P, Qin L, Verlinden B, Wevers M, Seefeldt M et al. Effect of liquid metal embrittlement on low cycle fatigue properties and fatigue crack propagation behavior of a modified 9Cr-1Mo ferritic-martensitic steel in an oxygen-controlled lead-bismuth eutectic environment at 350 °C. Materials Science and Engineering: A. 2014 Aug 28;618:406-415. doi: 10.1016/j.msea.2014.09.003