Microstructural characterization of nickel subjected to dynamic plastic deformation

SCRIPTA MATERIALIA

卷:66

Article

Luo, Z. P.²  Mishin, O. V.¹  Zhang, Y. B.¹  Zhang, H. W.²  Lu, K.² 

[1] Tech Univ Denmark, Riso Natl Lab Sustainable Energy, Mat Res Div, Danish Chinese Ctr Nanomet, DK-4000 Roskilde, Denmark

[2] Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China

关键词: Dynamic plastic deformation;    Nickel;    Deformation structure;    Dislocation boundaries;    Misorientation;   

DOI  :  10.1016/j.scriptamat.2011.11.022

来源: Elsevier

【 摘 要 】

Average microstructural parameters and the extent of microstructural heterogeneity in nickel deformed at a high strain rate have been characterized quantitatively and compared to those after compression at a quasi-static strain rate. The microstructure in the high strain rate sample was found to be more refined and less heterogeneous than that in the sample compressed at a low strain rate. The greater refinement in the former sample was achieved due to subdivision by a high frequency of finely spaced low-angle boundaries. (C) 2011 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

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