航空材料组织与残余应力评价对中子散射与同步辐射技术的需求

Requirements of Microstructure and Risidual Stress Evaluation of Aeronautical Materials for Neutron Scattering and Synchrotron Radiation Techniques

航空材料是航空装备发展的基础,航空材料及其构件从研发、制造、服役、维修到重大事故(故障)的失效分析等全寿命周期中,检测与表征技术起着关键性作用。本研究以问题与需求为导向,结合具体案例,阐述了航空材料及其构件在新材料研发、构件制造、产品服役与可靠性评估、重大事故(故障)的失效分析中,现有检测手段存在如不能无损地开展构件内部组织结构、残余应力等表征与评价方面的不足,以及航空材料在组织结构、残余应力等表征与评价中对于中子散射和同步辐射大科学装置技术的迫切需求,提出了发展航空中子应力谱仪、加强中子散射与同步辐射技术在航空材料中的技术开发与应用研究等建议。

Aeronautical materials are the basis of the development of aviation equipment. The testing and characterizing techniques of aeronautical materials and components play a key role during the entire life cycle from research, manufacturing, service,maintenance to failure analysis of fatal accidents(failures). This paper takes the demand and problem as the guidelines, combined with specific cases, to illustrate the shortcomings of the conventional characterization methods, such as the internal microstructure and residual stress of components cannot be characterized and evaluated without damage. The urgent requirements for neutron and synchrotron facilities application in characterization of microstructure and residual stress have been proposed: Furthermore, the advice on development of neutron stress spectrometer for aeronautical materials and strengthening the development and application in neutron scattering and sychrotron radiation techniques have been given respectively.