Journal
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
Volume 487, Issue 1-2, Pages 405-409Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.msea.2007.11.062
Keywords
boron carbide; Si-infiltrated; mechanical properties; dynamic properties; microstructure; fractography
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The present paper is concerned with the static and the dynamic mechanical properties at strain-rates up to 10(3) s(-1), of ceramic composites based on porous B4C infiltrated with molten Si. The static mechanical properties of the infiltrated composites depend on the amount of the residual silicon. The Young's modulus and the hardness increase, while the flexural strength and K-1C decrease with decreasing fraction of residual silicon. The dynamic strength and the initiation fracture toughness K-1D have significantly higher values than the corresponding static properties, and are insensitive to both the residual silicon fraction and the strain-rate up to 10(3) s(-1) (c) 2007 Elsevier B.V. All rights reserved.
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