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

被引：50
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
收藏
页码：647 / 657
页数：11
相关论文
共 69 条
  • [1] Evaluation of hydrogen entry into high strength steel under atmospheric corrosion
    Akiyama, Eiji
    Matsukado, Katsuhiro
    Wang, Maoqiu
    Tsuzaki, Kaneaki
    [J]. 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
    Becquart, C. S.
    Raulot, J. M.
    Bencteux, G.
    Domain, C.
    Perez, M.
    Garruchet, S.
    Nguyen, H.
    [J]. 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
    Cheng, Lin
    Enomoto, Masato
    Hirakami, Daisuke
    Tarui, Toshimi
    [J]. ISIJ INTERNATIONAL, 2013, 53 (01) : 131 - 138
  • [5] Hydrogen interaction with multiple traps: Can it be used to mitigate embrittlement?
    Dadfarnia, M.
    Sofronis, P.
    Neeraj, T.
    [J]. 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
    Depover, T.
    Verbeken, K.
    [J]. 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
    Depover, T.
    Verbeken, K.
    [J]. 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
    Depover, T.
    Verbeken, K.
    [J]. 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
    Depover, T.
    Verbeken, K.
    [J]. 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
    Depover, T.
    Verbeken, K.
    [J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2016, 669 : 134 - 149
1234567