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Tensile creep behavior of three-dimensional four-step braided SiC/SiC composite at elevated temperature
Affiliation:1. School of Power and Energy, Northwestern Polytechnical University, Xi''an 710072, China;2. School of Energy and Power Engineering, Beihang University, Beijing 100191, China;3. Collaborative Innovation Center of Advanced Aero-engine, Beijing 100191, China;4. Beijing Key Laboratory of Aero-Engine Structure and Strength, Beijing 100191, China;5. China Flight Test Establishment, Xi’an China;1. Department of Electrical Engineering, IIT Madras, Chennai 600036, India;2. Department of Aerospace Engineering, IIT Madras, Chennai 600036, India;3. Extreme Energy-Density Research Institute, Nagaoka University of Technology, Nagaoka 940-2188, Japan;4. Department of Engineering Design, IIT Madras, Chennai 600036, India;1. Shenzhen Key Laboratory for Advanced Materials and Department of Material Science and Engineering, Shenzhen Graduate School, Harbin Institute of Technology, University Town, Shenzhen, Guangdong 518055, China;2. Science and Technology on Advanced Ceramic Fibers and Composites Laboratory, National University of Defense Technology, Changsha, Hunan 410073, China
Abstract:This article presents experimental results for tensile creep deformation and rupture behavior of three-dimensional four-step braided SiC/SiC composites at 1100 °C and 1300 °C in air. The creep behavior at 1300 °C exhibited a long transient creep regime and the creep rate decreased continuously with time. The creep behavior at 1100 °C exhibited an apparent steady-rate regime and the creep deformation was smaller than that at 1300 °C. However, the creep rupture time at both temperatures showed little difference. The mechanisms controlling creep deformation and rupture behavior were analyzed.
Keywords:SiC/SiC composites  Creep  Fracture  Ceramic matrix composites
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