未来航空发动机材料面临的挑战与发展趋向

CHALLENGE AND DEVELOPEMENT TRENDS TO FUTURE AERO ENGINE MATERIALS

根据发动机材料基本服役环境的特点，提出将先进的结构概念与材料概念、发动机的先进性、可靠性与材料组织和缺陷的可控性与稳定性结合起来开展材料研究的论点。从使用温度、高温比强、抗氧化性、韧性、导热性与加工性方面分析了传统材料与新材料体系的特点，并针对我国航空发动机材料中存在的问题，提出了若干建议。

The development of next generation aero engines requires support of advanced materials and appropriate new structures and technologies. According to the service environment of aero materials,some points of view on combining the structure concept with material concept,the advancement and reliability of aero engines with the controllability and safety of structure and defect for research and development of materials are proposed. From the aspects of fundamental properties of maximam service temperature,high temperature specific strength,antioxidation,toughness,conductivity and processing ability,the behaviour of traditional and new materials systems is analysed and some suggesstions aimed at the problems in development of aero engine materials in China are presented.