Journal of Materials Science

, Volume 49, Issue 14, pp 4698–4704 | Cite as

Local plastic deformation in the vicinity of grain boundaries in Fe–3 mass% Si alloy bicrystals and tricrystal

  • Sadahiro Tsurekawa
  • Yuta Chihara
  • Kyohei Tashima
  • Seiichiro Ii
  • Pavel Lejček


Nanoindentation was used to study incipient plastic deformation in the vicinity of grain boundaries of different character in Fe–3 mass% Si alloy bicrystals and tricrystal. Pop-in events associated with the grain boundaries were observed in the load–displacement curves. From the pop-in hardness values, the critical stresses required to propagate the yield past the grain boundary were estimated to be in the range of approximately µ/400–µ/130 (where µ is the shear modulus) depending on the grain boundary character: the special boundaries usually had higher critical stresses than the general boundaries. A Hall–Petch (H–P) type relationship was found between the hardness and the distance of the indenter to the grain boundary. The H–P slopes obtained were approximately one order of magnitude lower than the macroscopic value of the H–P slope for the Fe–3 mass% Si alloy, and were generally lower for general grain boundaries than for special boundaries.


Grain Boundary Critical Stress Displacement Curve Coincidence Site Lattice Lattice Dislocation 
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.



The authors gratefully acknowledge Prof. Y. Morizono (Kumamoto University) for useful discussions. This work was financially supported by a Grant-in-Aid for Scientific Research (A) (24246125) from the Japan Society for the Promotion of Science and by the Grant GAP108/12/G043 from the Czech Science Foundation.


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Copyright information

© Springer Science+Business Media New York 2014

Authors and Affiliations

  • Sadahiro Tsurekawa
    • 1
  • Yuta Chihara
    • 1
  • Kyohei Tashima
    • 1
  • Seiichiro Ii
    • 2
  • Pavel Lejček
    • 3
  1. 1.Department of Materials Science and Engineering, Graduate School of Science and TechnologyKumamoto UniversityKumamotoJapan
  2. 2.Structural Materials UnitNational Institute for Materials Science (NIMS)TsukubaJapan
  3. 3.Laboratory of Nanostructures and Nanomaterials (LNSM), Institute of PhysicsAcademy of Sciences of the Czech RepublicPrague 8Czech Republic

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