Review on mechanics of ultra-high-temperature materials

Ultra-high-temperature materials have applications in aerospace and nuclear industry. They are usually subjected to complex thermal environments during service. The mechanical properties of materials in ultra-high-temperature environments have been attracted increasing attentions. However, the characterization and evaluation of ultra-high-temperature mechanical properties of materials are still challenging work. This article presents a review on the mechanical properties of materials at elevated temperatures. The experimental results and techniques on the ultra-high-temperature mechanical properties of materials are reviewed. The constitutive models of materials at elevated temperatures are discussed. The recent research progress on the quantitative theoretical characterization models for the temperature-dependent fracture strength of advanced ceramics and their composites is also given, and the emphasis is placed on the applications of the force-heat equivalence energy density principle. The thermal–mechanical-oxygen coupled computational mechanics of materials are discussed. Furthermore, the outlook and concluding remarks are highlighted.