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The high-strain-rate dynamic response of boron carbide-based composites / S. Hayun in Acta materialia, Vol. 58 N° 5 (Mars 2010) 

Public ISBD [article]  in Acta materialia > Vol. 58 N° 5 (Mars 2010) . - pp. 1721–1731 Titre : The high-strain-rate dynamic response of boron carbide-based composites : The effect of microstructure Type de document : texte imprimé Auteurs : S. Hayun, Auteur ; M. P. Dariel, Auteur ; N. Frage, Auteur Année de publication : 2011 Article en page(s) : pp. 1721–1731 Note générale : Métallurgie Langues : Anglais (eng) Mots-clés : Reaction  bonded  boron  carbide  Microstructure  High  strain  rate  Hugoniot  elastic  limit  Spall Résumé : The dynamic high-strain-rate behavior of boron carbide-based composites with similar phase composition yet different microstructural features, namely, amount of residual silicon, average grain size and morphology of the SiC particles, was investigated as a function of the planar impact strength. The composites consisted of boron carbide preforms (compacted or partly sintered powder) with or without free carbon addition, infiltrated with molten silicon. The dynamic response of the composites depends strongly on the amount of residual silicon, on the average size of the boron carbide grains, and on the morphology of the SiC particles. The preliminary sintering of the preforms exerts no effect on the dynamic properties of the composites. The deformation and failure mechanisms under dynamic loading are discussed. DEWEY : 669 ISSN : 1359-6454 En ligne : http://www.sciencedirect.com/science/article/pii/S1359645409007897 [article] The high-strain-rate dynamic response of boron carbide-based composites : The effect of microstructure [texte imprimé] / S. Hayun, Auteur ; M. P. Dariel, Auteur ; N. Frage, Auteur . - 2011 . - pp. 1721–1731. Métallurgie Langues : Anglais (eng) in Acta materialia > Vol. 58 N° 5 (Mars 2010) . - pp. 1721–1731 Mots-clés : Reaction  bonded  boron  carbide  Microstructure  High  strain  rate  Hugoniot  elastic  limit  Spall Résumé : The dynamic high-strain-rate behavior of boron carbide-based composites with similar phase composition yet different microstructural features, namely, amount of residual silicon, average grain size and morphology of the SiC particles, was investigated as a function of the planar impact strength. The composites consisted of boron carbide preforms (compacted or partly sintered powder) with or without free carbon addition, infiltrated with molten silicon. The dynamic response of the composites depends strongly on the amount of residual silicon, on the average size of the boron carbide grains, and on the morphology of the SiC particles. The preliminary sintering of the preforms exerts no effect on the dynamic properties of the composites. The deformation and failure mechanisms under dynamic loading are discussed. DEWEY : 669 ISSN : 1359-6454 En ligne : http://www.sciencedirect.com/science/article/pii/S1359645409007897