Paper Title:
Indentation Induced Deformation and Crack Behavior of β-SiC Irradiated at High Temperature
  Abstract

Irradiation damage produced by neutrons or energetic particles lead to changes of physical- and mechanical-properties of SiC. Radiation hardening and fracture toughness changing of SiC were clarified by indentation method previously. However, the mechanism studies have received little alteration. The purpose of this study is to improve the understanding of the mechanisms of mechanical property changes under irradiation. In this paper, the microstructural observation beneath and near an indentation will be used to infer mechanisms of radiation hardening and toughening. Indenting polycrystalline SiC creates deformation and cracking in the plastically deformed region. In the case of irradiated SiC, however, small-sized deformation zone was observed below contact indent, which resulted in the restricted size of residual impression. Additionally, the indentation cracks showed complex propagation behaviors such as deflecting, branching and microcracking.

  Info
Periodical
Edited by
Hai-Doo Kim, Hua-Tay Lin and Michael J. Hoffmann
Pages
489-494
DOI
10.4028/www.scientific.net/KEM.287.489
Citation
K. H. Park, T. Hinoki, A. Kohyama, "Indentation Induced Deformation and Crack Behavior of β-SiC Irradiated at High Temperature ", Key Engineering Materials, Vol. 287, pp. 489-494, 2005
Online since
June 2005
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Price
$32.00
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