Tensile, flexural, and shear properties of neutron irradiated SiC/SiC composites with different fiber-matrix interfaces

Takashi Nozawa; Kazumi Ozawa; Sosuke Kondo; Talsuya Hinoki; Yutai Katoh; Lance L. Snead; Akira Kohyama

Tensile, flexural, and shear properties of neutron irradiated SiC/SiC composites with different fiber-matrix interfaces

Takashi Nozawa, Kazumi Ozawa, Sosuke Kondo, Talsuya Hinoki, Yutai Katoh, Lance L. Snead, Akira Kohyama

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

Unidirectional SiC/SiC composites fabricated with highly-crystalline and stoichiometric fibers and matrix, but with three different interfacial types (single-layer pyrolytic carbon (PyC), multi-layered SiC/PyC, and pseudo porous SiC interfaces) were irradiated up to 1.0 × 10²⁵ n/m ² (E > 0.1 MeV) at 1073 and 1273 K. Tensile, inter-laminar shear, and flexural properties were evaluated to compare the role of different interfaces on neutron irradiation behavior. There was nearly no significant degradation in tensile and flexural strength after high-temperature neutron irradiation, except for porous SiC interphase composite. Moreover, no meaningful reduction of tensile modulus was identified regardless of interphase types, although 20-40 % degradation in flexural moduli occurred due to a reduction in inter-laminar shear modulus. In contrast, matrix cracking stress was significantly dependent on interfacial properties. Multilayer interphase composites exhibited the best irradiation stability. Irradiation instability of thick PyC and porous SiC interphase resulted in 20 % and 40 % degradations of matrix cracking stress, respectively. Copyright O 2005 by ASTM International.

Original language	English
Title of host publication	Effects of Radiation on Materials
Subtitle of host publication	22nd Symposium
Publisher	American Society for Testing and Materials
Pages	392-404
Number of pages	13
Volume	1475 STP
ISBN (Print)	0803134010, 9780803134010
Publication status	Published - 2006 Jan 1
Externally published	Yes
Event	22nd Symposium on Effects of Radiation on Materials - Boston, MA, United States Duration: 2004 Jun 8 → 2004 Jun 10

Other

Other	22nd Symposium on Effects of Radiation on Materials
Country	United States
City	Boston, MA
Period	04/6/8 → 04/6/10

Keywords

Flexure
Inter-laminar shear
Neutron irradiation effect
SiC/SiC composites
Small specimen test technique
Tensile

ASJC Scopus subject areas

Materials Science(all)

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Tensile, flexural, and shear properties of neutron irradiated SiC/SiC composites with different fiber-matrix interfaces. / Nozawa, Takashi; Ozawa, Kazumi; Kondo, Sosuke; Hinoki, Talsuya; Katoh, Yutai; Snead, Lance L.; Kohyama, Akira.

Effects of Radiation on Materials: 22nd Symposium. Vol. 1475 STP American Society for Testing and Materials, 2006. p. 392-404.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Nozawa, T, Ozawa, K, Kondo, S, Hinoki, T, Katoh, Y, Snead, LL & Kohyama, A 2006, Tensile, flexural, and shear properties of neutron irradiated SiC/SiC composites with different fiber-matrix interfaces. in Effects of Radiation on Materials: 22nd Symposium. vol. 1475 STP, American Society for Testing and Materials, pp. 392-404, 22nd Symposium on Effects of Radiation on Materials, Boston, MA, United States, 04/6/8.

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title = "Tensile, flexural, and shear properties of neutron irradiated SiC/SiC composites with different fiber-matrix interfaces",

abstract = "Unidirectional SiC/SiC composites fabricated with highly-crystalline and stoichiometric fibers and matrix, but with three different interfacial types (single-layer pyrolytic carbon (PyC), multi-layered SiC/PyC, and pseudo porous SiC interfaces) were irradiated up to 1.0 × 1025 n/m 2 (E > 0.1 MeV) at 1073 and 1273 K. Tensile, inter-laminar shear, and flexural properties were evaluated to compare the role of different interfaces on neutron irradiation behavior. There was nearly no significant degradation in tensile and flexural strength after high-temperature neutron irradiation, except for porous SiC interphase composite. Moreover, no meaningful reduction of tensile modulus was identified regardless of interphase types, although 20-40 % degradation in flexural moduli occurred due to a reduction in inter-laminar shear modulus. In contrast, matrix cracking stress was significantly dependent on interfacial properties. Multilayer interphase composites exhibited the best irradiation stability. Irradiation instability of thick PyC and porous SiC interphase resulted in 20 % and 40 % degradations of matrix cracking stress, respectively. Copyright O 2005 by ASTM International.",

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author = "Takashi Nozawa and Kazumi Ozawa and Sosuke Kondo and Talsuya Hinoki and Yutai Katoh and Snead, {Lance L.} and Akira Kohyama",

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T1 - Tensile, flexural, and shear properties of neutron irradiated SiC/SiC composites with different fiber-matrix interfaces

AU - Nozawa, Takashi

AU - Ozawa, Kazumi

AU - Kondo, Sosuke

AU - Hinoki, Talsuya

AU - Katoh, Yutai

AU - Snead, Lance L.

AU - Kohyama, Akira

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N2 - Unidirectional SiC/SiC composites fabricated with highly-crystalline and stoichiometric fibers and matrix, but with three different interfacial types (single-layer pyrolytic carbon (PyC), multi-layered SiC/PyC, and pseudo porous SiC interfaces) were irradiated up to 1.0 × 1025 n/m 2 (E > 0.1 MeV) at 1073 and 1273 K. Tensile, inter-laminar shear, and flexural properties were evaluated to compare the role of different interfaces on neutron irradiation behavior. There was nearly no significant degradation in tensile and flexural strength after high-temperature neutron irradiation, except for porous SiC interphase composite. Moreover, no meaningful reduction of tensile modulus was identified regardless of interphase types, although 20-40 % degradation in flexural moduli occurred due to a reduction in inter-laminar shear modulus. In contrast, matrix cracking stress was significantly dependent on interfacial properties. Multilayer interphase composites exhibited the best irradiation stability. Irradiation instability of thick PyC and porous SiC interphase resulted in 20 % and 40 % degradations of matrix cracking stress, respectively. Copyright O 2005 by ASTM International.

AB - Unidirectional SiC/SiC composites fabricated with highly-crystalline and stoichiometric fibers and matrix, but with three different interfacial types (single-layer pyrolytic carbon (PyC), multi-layered SiC/PyC, and pseudo porous SiC interfaces) were irradiated up to 1.0 × 1025 n/m 2 (E > 0.1 MeV) at 1073 and 1273 K. Tensile, inter-laminar shear, and flexural properties were evaluated to compare the role of different interfaces on neutron irradiation behavior. There was nearly no significant degradation in tensile and flexural strength after high-temperature neutron irradiation, except for porous SiC interphase composite. Moreover, no meaningful reduction of tensile modulus was identified regardless of interphase types, although 20-40 % degradation in flexural moduli occurred due to a reduction in inter-laminar shear modulus. In contrast, matrix cracking stress was significantly dependent on interfacial properties. Multilayer interphase composites exhibited the best irradiation stability. Irradiation instability of thick PyC and porous SiC interphase resulted in 20 % and 40 % degradations of matrix cracking stress, respectively. Copyright O 2005 by ASTM International.

KW - Flexure

KW - Inter-laminar shear

KW - Neutron irradiation effect

KW - SiC/SiC composites

KW - Small specimen test technique

KW - Tensile

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AN - SCOPUS:59149105413

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BT - Effects of Radiation on Materials

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ER -

Tensile, flexural, and shear properties of neutron irradiated SiC/SiC composites with different fiber-matrix interfaces

Abstract

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Keywords

ASJC Scopus subject areas

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