Fatigue and Creep Behaviour of a SiCf/SiC Composite for Nuclear Fusion Reactor Applications

E. Trentini; B. Riccardi; M. Labanti

doi:10.4028/www.scientific.net/AST.45.1444

Paper Titles

A Study of the Platinum/Alumina Interface
p.1417

Effects of Magnetic Powder Loading on Mechanical Properties and Magnetic Properties of Natural Rubber
p.1423

Attainment and Characterization of the Thermosetting Polymer Loaded with Barite to be Used in the Manufacture of Isolating Plates to Bar the X-Ray Radiation
p.1429

Evaluation of Mechanical Properties and Comprehensive Modeling of CMC with Stiff and Weak Matrices
p.1435

Fatigue and Creep Behaviour of a SiC_f/SiC Composite for Nuclear Fusion Reactor Applications
p.1444

Characterisation of Carbon Fibre Kaolin Matrix Composites
p.1450

Structure and Properties of Heterophase Nanostructured Ceramics
p.1456

Impact Testing on Al₂O₃ and Al₂O₃/ZrO₂ Laminated Composites
p.1462

Percolation Analysis of Electrical Conductivity and Mechanical Properties for CNT-Dispersed Y-TZP Nanocomposites
p.1469

HomeAdvances in Science and TechnologyAdvances in Science and Technology Vol. 45Fatigue and Creep Behaviour of a SiCf/SiC...

Fatigue and Creep Behaviour of a SiC_f/SiC Composite for Nuclear Fusion Reactor Applications

Abstract:

This study presents the results of mechanical tests of commercial 2D SiCf/SiC ceramic matrix composite for fusion reactors applications. The creep behaviour was investigated by means of flexural constant load stress-rupture tests, in controlled atmosphere at 600 and 1000°C. The creep strain and time to failure vary with applied load according to a power law. Cyclical tests at room temperature and at high temperature showed that the material has a good fatigue behaviour at room temperature, as no evident fatigue damage was detected after 80.000 cycles at a peak load up to 98 % of MOR. Conversely at high temperature (1000°C) the specimens showed a progressive compliance increase and limited cycles to failure even at peak load as low as 40 % of MOR. Creep phenomena seem to influence the fatigue behaviour. Creep strain analysis, crack growth and fracture surface observations allowed to investigate the mechanisms that affect the crack propagation, the fracture process and the rupture life under cyclic loading and under constant stress loading at different temperatures.