Mechanical Behavior of Plain-Woven SiC/SiC at Elevated Temperature

Ceramic matrix composites are extensively employed in the hot-end components of aero engines owing to their exceptional high-temperature stability. In practical engineering applications, ceramic matrix composite components are subject to the combined influence of high-temperature environments and complex loads. Under complex loads in high-temperature environments, in addition to damage characteristics such as matrix cracking, fiber pull-out, and interface debonding, oxygen enters the material interior along the channels formed at the crack tips, causing oxidation at the fiber/matrix interface. This leads to more complex damage patterns and behaviors of the material, which has a significant impact on the material’s strength and service life. For this purpose, based on the typical service environment of SiCf/SiC composites, this chapter conducts fatigue, creep, and fatigue-creep interaction mechanical property experiments on SiCf/SiC material under high-temperature conditions, revealing the influence mechanism of temperature and load on material damage and failure, and obtaining performance data of the materials under typical service environment and load, laying a foundation for the engineering application of materials.