Journal of Materials Science

, Volume 43, Issue 3, pp 1166–1169 | Cite as

Atomistic simulation of the effects of hydrogen on the mobility of edge dislocation in alpha iron

  • Shinya Taketomi
  • Ryosuke Matsumoto
  • Noriyuki Miyazaki

Despite extensive investigations concerning hydrogen embrittlement mechanisms, not all the effects of hydrogen on material properties have been clarified. One of the effects of hydrogen is an enhancement of plasticity localisation and is known as the hydrogen enhanced localised plasticity (HELP) mechanism [1]. An in situ observation of the dislocations under a hydrogen gaseous environment was performed using a transmission electron microscope (TEM), which revealed the reduction of the distance between dislocations when hydrogen gas was added into the environmental cell [2, 3]. Such a plasticity localisation is observed in a large number of materials and slip systems [4]. Therefore, these experimental results are considered to be powerful evidence of HELP. Although the experimental observations show only the reduction of the distance between dislocations under a hydrogen gaseous environment, the precise reason for this reaction is still unclear. Elasticity analyses suggest that...


Conjugate Gradient Method Hydrogen Embrittlement Edge Dislocation Dislocation Core Embed Atom Method 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.



This research was performed as part of the Fundamental Research Project on Advanced Hydrogen Science funded by the New Energy and Industrial Technology Development Organization (NEDO). The research has also been partially supported by the ENEOS Hydrogen Trust Fund and the Ministry of Education, Science, Sports and Culture’s Grant-in-Aid for Young Scientists (A), 19686013, 2007.


  1. 1.
    Beachem CD (1972) Metall Trans 3(2):437CrossRefGoogle Scholar
  2. 2.
    Ferreira PJ, Robertson IM, Birnbaum HK (1998) Acta mater 46(5):1749CrossRefGoogle Scholar
  3. 3.
    Ferreira PJ, Robertson IM, Birnbaum HK (1999) Acta mater 47(10):2991CrossRefGoogle Scholar
  4. 4.
    Birnbaum HK, Robertson IM, Sofronis P, Teter D (1997) In: Magnin T (ed) Corrosion-deformation interactions, Inst. of Mat, p 172Google Scholar
  5. 5.
    Sofronis P, Birnbaum HK (1995) Mech J Phys Solids 43(1):49CrossRefGoogle Scholar
  6. 6.
    Lu G, Zhang Q, Kioussis N, Kaxiras E (2001) Phys Rev Lett 87(9):095501CrossRefGoogle Scholar
  7. 7.
    Wen M, Xu XJ, Fukuyama S, Yokogawa K (2001) J Mater Res 16(12):3496CrossRefGoogle Scholar
  8. 8.
    Henkelman G, Jónsson H (2000) J Chem Phys 113(22):9978CrossRefGoogle Scholar
  9. 9.
    Jónsson H, Mills G, Jacobsen KW (1998) In: Berne BJ et al (eds) Classical and quantum dynamics in condensed phase simulations. World Scientific, Singapore, p 385Google Scholar
  10. 10.
    Bastien P, Azou P (1951) Compt Rend Acad Sci 232:1845Google Scholar
  11. 11.
    Miyazaki N, Matsumoto R, Nishimura K, Matsumoto S (2007) Proc. International Hydrogen Energy Development Forum, p 125Google Scholar
  12. 12.
    Fukai Y (1984) J Less-Common Metals 101:1CrossRefGoogle Scholar
  13. 13.
    Choo WY, Lee JY (1982) Metall Trans A 13A:135Google Scholar

Copyright information

© Springer Science+Business Media, LLC 2008

Authors and Affiliations

  • Shinya Taketomi
    • 1
    • 2
  • Ryosuke Matsumoto
    • 1
    • 2
  • Noriyuki Miyazaki
    • 1
    • 2
  1. 1.Department of Mechanical Engineering and ScienceGraduate School of Engineering, Kyoto UniversitySakyo-kuJapan
  2. 2.Visiting ResearcherNational Institute of Advanced Industrial Science and Technology (AIST)TsukubaJapan

Personalised recommendations