Comparison of the mechanical behaviour of SiCf/SiC composites following neutron irradiation and helium implantation

被引：17

作者：

Rebelo, AJF ^{[1
]}

Scholz, HW ^{[1
]}

Kolbe, H ^{[1
]}

Tartaglia, GP ^{[1
]}

Fenici, P ^{[1
]}

机构：

[1] Commiss European Communities, Inst Adv Mat, Ispra, VA, Italy

来源：

JOURNAL OF NUCLEAR MATERIALS | 1998年 / 258卷

关键词：

D O I：

10.1016/S0022-3115(98)00177-9

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Thermomechanical behaviour of 2D-SiCf/SiC composites following neutron irradiation and helium implantation was studied. Three-point bending tests were carried out at room temperature (RT) and 1073 K, after neutron irradiation (1.29, 2.69 and 5.23 dpa) at the High Flux Reactor-Petten. Results of RT mechanical tests on helium implanted bars are also referred and discussed. The samples with an accumulated damage dose of 1.29 dpa show a strength decrease and improved bend toughness. For the higher neutron fluences the composite exhibits a brittle behaviour. For helium implanted materials, a strength decrease comparable to that observed for those neutron irradiated at lower fluence is present, but its toughness is reduced. (C) 1998 Elsevier Science B.V. All rights reserved.

引用

页码：1582 / 1588

页数：7

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