CHEN, Jiachao; JACQUES, Sylvain; BARTHE, Marie-France; ZHANG, Chonghong; DESGARDIN, Pierre

doi:10.1016/j.jnucmat.2020.152086

Laboratoire des Composites Thermostructuraux [LCTS]

BARTHE, Marie-France
Conditions Extrêmes et Matériaux : Haute Température et Irradiation [CEMHTI]

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Journal of Nuclear Materials. 2020-05-01, vol. 533, p. 152086

Résumé en anglais

A newly developed clamping system for ceramic specimen is described in the present report. By using this system, the uniaxial tensile loading was first successfully applied up to fracture (950 MPa) on a SiCf/SiC minicomposite. A minicomposite is a 1D model composite. It consists of a SiC-based fiber tow embedded in a SiC matrix, which has a diameter of about 0.5 mm. Afterwards, the irradiation creep properties of SiCf/SiC minicomposites were studied. In-situ creep was performed in an in-beam creep device under uniaxial tensile stresses from 40 to 382 MPa during homogeneous helium irradiation. Homogenous irradiation was carried out by helium implantation with energies varying from 0 to 45 MeV. The displacement dose rate was 1.2 × 10−6 dpa/s. The average temperature was controlled to 700 and 900 °C within ±15 °C. Irradiation creep compliance of minicomposite was measured to be 3.07 × 10−5 and 5.43 × 10−5 dpa−1 MPa−1 at 700 °C and 900 °C, respectively.< Réduire

Mots clés en anglais

SiCf/SiC composite

High-temperature mechanical testing

Irradiation creep

Clamping system

URI

https://oskar-bordeaux.fr/handle/20.500.12278/110150

DOI

http://dx.doi.org/10.1016/j.jnucmat.2020.152086

Unités de recherche

Laboratoire des Composites Thermo Structuraux (LCTS) - UMR 5801

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In-beam creep of SiCf/SiC minicomposites under uniaxial tensile loading

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Résumé en anglais

Mots clés en anglais

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Unités de recherche