Static and dynamic mechanical properties of infiltrated B4C-Si composites

S. Hayun; D. Rittel; N. Frage; M. P. Dariel

doi:10.1016/j.msea.2007.11.062

Static and dynamic mechanical properties of infiltrated B₄C-Si composites

S. Hayun, D. Rittel, N. Frage, M. P. Dariel

Department of Materials Engineering

Research output: Contribution to journal › Article › peer-review

74 Scopus citations

Abstract

The present paper is concerned with the static and the dynamic mechanical properties at strain-rates up to 10³ 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 over(ε{lunate}, ̇) = 10³ s^{- 1}.

Original language	English
Pages (from-to)	405-409
Number of pages	5
Journal	Materials Science and Engineering: A
Volume	487
Issue number	1-2
DOIs	https://doi.org/10.1016/j.msea.2007.11.062
State	Published - 25 Jul 2008

Keywords

Boron carbide
Dynamic properties
Fractography
Mechanical properties
Microstructure
Si-infiltrated

ASJC Scopus subject areas

General Materials Science
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

Access to Document

10.1016/j.msea.2007.11.062

Cite this

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title = "Static and dynamic mechanical properties of infiltrated B4C-Si composites",

abstract = "The present paper is concerned with the static and the dynamic mechanical properties at strain-rates up to 103 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 K1C decrease with decreasing fraction of residual silicon. The dynamic strength and the initiation fracture toughness K1D have significantly higher values than the corresponding static properties, and are insensitive to both the residual silicon fraction and the strain-rate up to over(ε{lunate},{\. }) = 103 s- 1.",

keywords = "Boron carbide, Dynamic properties, Fractography, Mechanical properties, Microstructure, Si-infiltrated",

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T1 - Static and dynamic mechanical properties of infiltrated B4C-Si composites

AU - Hayun, S.

AU - Rittel, D.

AU - Frage, N.

AU - Dariel, M. P.

PY - 2008/7/25

Y1 - 2008/7/25

N2 - The present paper is concerned with the static and the dynamic mechanical properties at strain-rates up to 103 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 K1C decrease with decreasing fraction of residual silicon. The dynamic strength and the initiation fracture toughness K1D have significantly higher values than the corresponding static properties, and are insensitive to both the residual silicon fraction and the strain-rate up to over(ε{lunate}, ̇) = 103 s- 1.

AB - The present paper is concerned with the static and the dynamic mechanical properties at strain-rates up to 103 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 K1C decrease with decreasing fraction of residual silicon. The dynamic strength and the initiation fracture toughness K1D have significantly higher values than the corresponding static properties, and are insensitive to both the residual silicon fraction and the strain-rate up to over(ε{lunate}, ̇) = 103 s- 1.

KW - Boron carbide

KW - Dynamic properties

KW - Fractography

KW - Mechanical properties

KW - Microstructure

KW - Si-infiltrated

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