Temperature effect in the maximum propagation rate of a liquid metal filled crack: The T91 martensitic steel/Lead-Bismuth Eutectic system

被引：34

作者：

Hadjem-Hamouche, Z. ^{[2
]}

Auger, T. ^{[1
]}

Guillot, I. ^{[3
]}

机构：

[1] CNRS, UMR 8579, MSSMAT, Ecole Cent Paris, F-92290 Chatenay Malabry, France

[2] CNAM, F-75141 Paris 03, France

[3] Univ Paris Est, ICMPE, CNRS, UMR 7182, F-94320 Thiais, France

来源：

CORROSION SCIENCE | 2009年 / 51卷 / 11期

关键词：

Steel; Kinetic parameters; LME; CORROSION; STEELS; EMBRITTLEMENT; FRACTURE; STRESS; 316L; LBE;

D O I：

10.1016/j.corsci.2009.06.049

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The liquid metal embrittlement sensitivity of a modified 9Cr1Mo martensitic steel in contact with Lead-Bismuth Eutectic was studied as a function of the temperature in a wide range of deformation rate. A fracture mechanics approach (crack tip opening displacement and J-Delta a) combined to a fractographic study was applied to study the maximum brittle crack propagation rate. Comparison of these data with the temperature evolution expected from the stress assisted dissolution model discards this model as the embrittlement mechanism. Thermally activated ductility recovery mechanisms fail to account for the experimental results. However, the data is compatible with a physi-sorption rate limiting process. The adsorption energy extracted from the temperature evolution of the maximum crack propagation rate compares favourably with existing Ab-Initio calculations. This strongly suggests that the LME mechanism is linked with the direct effect of surface adsorption. (C) 2009 Elsevier Ltd. All rights reserved.

引用

页码：2580 / 2587

页数：8

共 24 条

[1]

[Anonymous], 1995, ANAL FRACTURE MECH

[2] Liquid metal embrittlement of T91 and 316L steels by heavy liquid metals: A fracture mechanics assessment [J].

Auger, T. ;

Hamouche, Z. ;

Medina-Almazan, L. ;

Gorse, D. .

JOURNAL OF NUCLEAR MATERIALS, 2008, 377 (01) :253-260

[3] The metallicity of thin films and overlayers [J].

Dowben, PA .

SURFACE SCIENCE REPORTS, 2000, 40 (6-8) :151-245

[4] Corrosion behaviour of steels and refractory metals and tensile features of steels exposed to flowing PbBi in the LECOR loop [J].

Fazio, C ;

Ricapito, I ;

Scaddozzo, G ;

Benamati, G .

JOURNAL OF NUCLEAR MATERIALS, 2003, 318 :325-332

[5] The effects of microstructure on crack initiation in liquid-metal environments [J].

Fernandes, PJL ;

Jones, DRH .

ENGINEERING FAILURE ANALYSIS, 1997, 4 (03) :195-204

[6] Step and island dynamics at solid/vacuum and solid/liquid interfaces [J].

Giesen, M .

PROGRESS IN SURFACE SCIENCE, 2001, 68 (1-3) :1-153

[7] Susceptibility to LME of 316L and T91 steels by LBE: Effect of strain rate [J].

Hamouche-Hadjem, Zehoua ;

Auger, Thierry ;

Guillot, Ivan ;

Gorse, Dominique .

JOURNAL OF NUCLEAR MATERIALS, 2008, 376 (03) :317-321

[8]

JOHNSON WH, 1977, P ENV DEGR ENG MAT B

[9]

Kamdar M. H., 1973, Progress in Materials Science, V15, P289, DOI 10.1016/0079-6425(73)90005-4

[10]

KAPP JA, 1982, EMBRITTLEMENT LIQUID, P117

← 1 2 3 →