Model-based interpretation of thermal desorption spectra of Fe-C-Ti alloys

被引：52

作者：

Drexler, Andreas ^{[1
]}

Depover, Tom ^{[2
]}

Verbeken, Kim ^{[2
]}

Ecker, Werner ^{[1
]}

机构：

[1] Mat Ctr Leoben Forsch GmbH, Roseggerstr 12, A-8700 Leoben, Austria

[2] Ghent Univ UGent, Dept Mat Text & Chem Engn, Technol Pk 903, B-9052 Ghent, Belgium

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2019年 / 789卷

关键词：

Steel; Alloy; Electrochemical calculations; Modelling studies; Hydrogen embrittlement; Stress corrosion; INDUCED MECHANICAL DEGRADATION; INDUCED DUCTILITY LOSS; HYDROGEN EMBRITTLEMENT; QUANTITATIVE-ANALYSIS; GENERALIZED-MODEL; DIFFUSION; SPECTROSCOPY; METALS; TRAPS; DISLOCATIONS;

D O I：

10.1016/j.jallcom.2019.03.102

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A model-based evaluation procedure by a trap-diffusion integrated finite element model (FEM) is used to interpret the experimentally measured thermal desorption spectra (TDS) of Fe-C-Ti alloys. Two material conditions are compared, i.e. as-quenched vs. quenched and tempered, in which TiC have precipitated. The discrepancy between measurement and simulation is found to be very small for all material conditions. The model shows high trapping energies of around 58 kJ/mol to 110 kJ/mol (0.61 eV-1.14 eV), when the materials are tempered. These traps could be related to carbon vacancies in TiC precipitates. (C) 2019 Elsevier B.V. All rights reserved.

引用

页码：647 / 657

页数：11

共 69 条

[1] Evaluation of hydrogen entry into high strength steel under atmospheric corrosion [J].

Akiyama, Eiji ;

Matsukado, Katsuhiro ;

Wang, Maoqiu ;

Tsuzaki, Kaneaki .

CORROSION SCIENCE, 2010, 52 (09) :2758-2765

[2]

BEACHEM CD, 1972, METALL TRANS, V3, P437

[3] Atomistic modeling of an Fe system with a small concentration of C [J].

Becquart, C. S. ;

Raulot, J. M. ;

Bencteux, G. ;

Domain, C. ;

Perez, M. ;

Garruchet, S. ;

Nguyen, H. .

COMPUTATIONAL MATERIALS SCIENCE, 2007, 40 (01) :119-129

[4] Influence of Carbon Segregation to Dislocations on Thermal Desorption Spectrum of Hydrogen in Medium Carbon Martensitic Steels [J].

Cheng, Lin ;

Enomoto, Masato ;

Hirakami, Daisuke ;

Tarui, Toshimi .

ISIJ INTERNATIONAL, 2013, 53 (01) :131-138

[5] Hydrogen interaction with multiple traps: Can it be used to mitigate embrittlement? [J].

Dadfarnia, M. ;

Sofronis, P. ;

Neeraj, T. .

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 2011, 36 (16) :10141-10148

[6] The detrimental effect of hydrogen at dislocations on the hydrogen embrittlement susceptibility of Fe-C-X alloys: An experimental proof of the HELP mechanism [J].

Depover, T. ;

Verbeken, K. .

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 2018, 43 (05) :3050-3061

[7] The effect of TiC on the hydrogen induced ductility loss and trapping behavior of Fe-C-Ti alloys [J].

Depover, T. ;

Verbeken, K. .

CORROSION SCIENCE, 2016, 112 :308-326

[8] Evaluation of the effect of V4C3 precipitates on the hydrogen induced mechanical degradation in Fe-C-V alloys [J].

Depover, T. ;

Verbeken, K. .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2016, 675 :299-313

[9] Evaluation of the role of Mo2C in hydrogen induced ductility loss in Q&T Fe-C-Mo alloys [J].

Depover, T. ;

Verbeken, K. .

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 2016, 41 (32) :14310-14329

[10] Hydrogen trapping and hydrogen induced mechanical degradation in lab cast Fe-C-Cr alloys [J].

Depover, T. ;

Verbeken, K. .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2016, 669 :134-149

← 1 2 3 4 5 6 7 →