Multiscale investigation of quasi-brittle fracture characteristics in a9Cr–1Mo ferritic–martensitic steel embrittled by liquid lead–bismuthunder low cycle fatigue

Xing Gong; Pierre Marmy; Volodin Alexander; Behnam Amin-Ahmadi; Ling Qin; Dominique Schryvers; Serguei Gavrilov; Erich Stergar; Bert Verlinden; Martine Wevers; Marc Seefeldt

doi:10.1016/j.corsci.2015.10.003

Multiscale investigation of quasi-brittle fracture characteristics in a9Cr–1Mo ferritic–martensitic steel embrittled by liquid lead–bismuthunder low cycle fatigue

Xing Gong, Pierre Marmy, Volodin Alexander, Behnam Amin-Ahmadi, Ling Qin, Dominique Schryvers, Serguei Gavrilov, Erich Stergar, Bert Verlinden, Martine Wevers, Marc Seefeldt

Research output › peer-review

Abstract

Liquid metal embrittlement (LME) induced quasi-brittle fracture characteristics of a 9Cr–1Moferritic–martensitic steel (T91) after fatigue cracking in lead–bismuth eutectic (LBE) have been inves-tigated at various length scales. The results show that the LME fracture morphology is primarilycharacterized by quasi-brittle translath flat regions partially covered by nanodimples, shallow secondarycracks propagating along the martensitic lath boundaries as well as tear ridges covered by micro dimples.These diverse LME fracture features likely indicate a LME mechanism involving multiple physical pro-cesses, such as weakening induced interatomic decohesion at the crack tip and plastic shearing inducednano/micro voiding in the plastic zone.

Original language	English
Pages (from-to)	137-152
Journal	Corrosion Science
Volume	102
DOIs	https://doi.org/10.1016/j.corsci.2015.10.003
State	Published - 14 Oct 2015

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Gong, X., Marmy, P., Alexander, V., Amin-Ahmadi, B., Qin, L., Schryvers, D., Gavrilov, S., Stergar, E., Verlinden, B., Wevers, M., & Seefeldt, M. (2015). Multiscale investigation of quasi-brittle fracture characteristics in a9Cr–1Mo ferritic–martensitic steel embrittled by liquid lead–bismuthunder low cycle fatigue. Corrosion Science, 102, 137-152. https://doi.org/10.1016/j.corsci.2015.10.003

@article{d473565dd67046b98c9e6ef4f8075917,

title = "Multiscale investigation of quasi-brittle fracture characteristics in a9Cr–1Mo ferritic–martensitic steel embrittled by liquid lead–bismuthunder low cycle fatigue",

abstract = "Liquid metal embrittlement (LME) induced quasi-brittle fracture characteristics of a 9Cr–1Moferritic–martensitic steel (T91) after fatigue cracking in lead–bismuth eutectic (LBE) have been inves-tigated at various length scales. The results show that the LME fracture morphology is primarilycharacterized by quasi-brittle translath flat regions partially covered by nanodimples, shallow secondarycracks propagating along the martensitic lath boundaries as well as tear ridges covered by micro dimples.These diverse LME fracture features likely indicate a LME mechanism involving multiple physical pro-cesses, such as weakening induced interatomic decohesion at the crack tip and plastic shearing inducednano/micro voiding in the plastic zone.",

keywords = "Steel, AFM, SEM, TEM, LME",

author = "Xing Gong and Pierre Marmy and Volodin Alexander and Behnam Amin-Ahmadi and Ling Qin and Dominique Schryvers and Serguei Gavrilov and Erich Stergar and Bert Verlinden and Martine Wevers and Marc Seefeldt",

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doi = "10.1016/j.corsci.2015.10.003",

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Gong, X, Marmy, P, Alexander, V, Amin-Ahmadi, B, Qin, L, Schryvers, D, Gavrilov, S , Stergar, E, Verlinden, B, Wevers, M & Seefeldt, M 2015, 'Multiscale investigation of quasi-brittle fracture characteristics in a9Cr–1Mo ferritic–martensitic steel embrittled by liquid lead–bismuthunder low cycle fatigue', Corrosion Science, vol. 102, pp. 137-152. https://doi.org/10.1016/j.corsci.2015.10.003

TY - JOUR

T1 - Multiscale investigation of quasi-brittle fracture characteristics in a9Cr–1Mo ferritic–martensitic steel embrittled by liquid lead–bismuthunder low cycle fatigue

AU - Gong, Xing

AU - Marmy, Pierre

AU - Alexander, Volodin

AU - Amin-Ahmadi, Behnam

AU - Qin, Ling

AU - Schryvers, Dominique

AU - Gavrilov, Serguei

AU - Stergar, Erich

AU - Verlinden, Bert

AU - Wevers, Martine

AU - Seefeldt, Marc

N1 - Score=10

PY - 2015/10/14

Y1 - 2015/10/14

N2 - Liquid metal embrittlement (LME) induced quasi-brittle fracture characteristics of a 9Cr–1Moferritic–martensitic steel (T91) after fatigue cracking in lead–bismuth eutectic (LBE) have been inves-tigated at various length scales. The results show that the LME fracture morphology is primarilycharacterized by quasi-brittle translath flat regions partially covered by nanodimples, shallow secondarycracks propagating along the martensitic lath boundaries as well as tear ridges covered by micro dimples.These diverse LME fracture features likely indicate a LME mechanism involving multiple physical pro-cesses, such as weakening induced interatomic decohesion at the crack tip and plastic shearing inducednano/micro voiding in the plastic zone.

AB - Liquid metal embrittlement (LME) induced quasi-brittle fracture characteristics of a 9Cr–1Moferritic–martensitic steel (T91) after fatigue cracking in lead–bismuth eutectic (LBE) have been inves-tigated at various length scales. The results show that the LME fracture morphology is primarilycharacterized by quasi-brittle translath flat regions partially covered by nanodimples, shallow secondarycracks propagating along the martensitic lath boundaries as well as tear ridges covered by micro dimples.These diverse LME fracture features likely indicate a LME mechanism involving multiple physical pro-cesses, such as weakening induced interatomic decohesion at the crack tip and plastic shearing inducednano/micro voiding in the plastic zone.

KW - Steel

KW - AFM

KW - SEM

KW - TEM

KW - LME

UR - http://ecm.sckcen.be/OTCS/llisapi.dll/open/20290479

U2 - 10.1016/j.corsci.2015.10.003

DO - 10.1016/j.corsci.2015.10.003

M3 - Article

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JO - Corrosion Science

JF - Corrosion Science

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