Mechanical properties of advanced SiC/SiC composites after neutron irradiation

K. Ozawa; T. Nozawa; Y. Katoh; T. Hinoki; A. Kohyama

doi:10.1016/j.jnucmat.2007.03.033

Mechanical properties of advanced SiC/SiC composites after neutron irradiation

K. Ozawa, T. Nozawa, Y. Katoh, T. Hinoki, A. Kohyama

Materials Science and Technology Div

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

44 Scopus citations

Abstract

The effect of neutron irradiation on tensile properties in advanced 2D-SiC/SiC composites was evaluated. The composites used were composed of a SiC matrix obtained by the forced-flow chemical vapor infiltration (FCVI) process and either Tyranno™-SA Grade-3 or Hi-Nicalon™ Type-S fibers with single-layered PyC coating as the interphase. Neutron irradiation fluence and temperature were 3.1 × 10²⁵ n/m² (E > 0.1 MeV) and 1.2 × 10²⁶ n/m² at 740-750 °C. Tensile properties were evaluated by cyclic tensile test, and hysteresis loop analysis was applied in order to evaluate interfacial properties. Both composites exhibited excellent irradiation resistance in ultimate and proportional limit tensile stresses. From the hysteresis loop analysis, the level of interfacial sliding stress decreased significantly after irradiation to 1.5 × 10²⁶ n/m² at 750 °C.

Original language	English
Pages (from-to)	713-718
Number of pages	6
Journal	Journal of Nuclear Materials
Volume	367-370 A
Issue number	SPEC. ISS.
DOIs	https://doi.org/10.1016/j.jnucmat.2007.03.033
State	Published - Aug 1 2007

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title = "Mechanical properties of advanced SiC/SiC composites after neutron irradiation",

abstract = "The effect of neutron irradiation on tensile properties in advanced 2D-SiC/SiC composites was evaluated. The composites used were composed of a SiC matrix obtained by the forced-flow chemical vapor infiltration (FCVI) process and either Tyranno{\texttrademark}-SA Grade-3 or Hi-Nicalon{\texttrademark} Type-S fibers with single-layered PyC coating as the interphase. Neutron irradiation fluence and temperature were 3.1 × 1025 n/m2 (E > 0.1 MeV) and 1.2 × 1026 n/m2 at 740-750 °C. Tensile properties were evaluated by cyclic tensile test, and hysteresis loop analysis was applied in order to evaluate interfacial properties. Both composites exhibited excellent irradiation resistance in ultimate and proportional limit tensile stresses. From the hysteresis loop analysis, the level of interfacial sliding stress decreased significantly after irradiation to 1.5 × 1026 n/m2 at 750 °C.",

author = "K. Ozawa and T. Nozawa and Y. Katoh and T. Hinoki and A. Kohyama",

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T1 - Mechanical properties of advanced SiC/SiC composites after neutron irradiation

AU - Ozawa, K.

AU - Nozawa, T.

AU - Katoh, Y.

AU - Hinoki, T.

AU - Kohyama, A.

PY - 2007/8/1

Y1 - 2007/8/1

N2 - The effect of neutron irradiation on tensile properties in advanced 2D-SiC/SiC composites was evaluated. The composites used were composed of a SiC matrix obtained by the forced-flow chemical vapor infiltration (FCVI) process and either Tyranno™-SA Grade-3 or Hi-Nicalon™ Type-S fibers with single-layered PyC coating as the interphase. Neutron irradiation fluence and temperature were 3.1 × 1025 n/m2 (E > 0.1 MeV) and 1.2 × 1026 n/m2 at 740-750 °C. Tensile properties were evaluated by cyclic tensile test, and hysteresis loop analysis was applied in order to evaluate interfacial properties. Both composites exhibited excellent irradiation resistance in ultimate and proportional limit tensile stresses. From the hysteresis loop analysis, the level of interfacial sliding stress decreased significantly after irradiation to 1.5 × 1026 n/m2 at 750 °C.

AB - The effect of neutron irradiation on tensile properties in advanced 2D-SiC/SiC composites was evaluated. The composites used were composed of a SiC matrix obtained by the forced-flow chemical vapor infiltration (FCVI) process and either Tyranno™-SA Grade-3 or Hi-Nicalon™ Type-S fibers with single-layered PyC coating as the interphase. Neutron irradiation fluence and temperature were 3.1 × 1025 n/m2 (E > 0.1 MeV) and 1.2 × 1026 n/m2 at 740-750 °C. Tensile properties were evaluated by cyclic tensile test, and hysteresis loop analysis was applied in order to evaluate interfacial properties. Both composites exhibited excellent irradiation resistance in ultimate and proportional limit tensile stresses. From the hysteresis loop analysis, the level of interfacial sliding stress decreased significantly after irradiation to 1.5 × 1026 n/m2 at 750 °C.

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SN - 0022-3115

VL - 367-370 A

SP - 713

EP - 718

JO - Journal of Nuclear Materials

JF - Journal of Nuclear Materials

IS - SPEC. ISS.

ER -

Mechanical properties of advanced SiC/SiC composites after neutron irradiation

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