ODS钢研究进展及其在核电领域的应用现状

氧化物弥散强化钢(Oxide Dispersion Strengthened Steel, ODS钢),具有优异的力学性能、高温稳定性及抗辐照性能.本文概要地综述了机械合金化、热等静压固化成形、等离子烧结及转角挤压等ODS钢的制备方法,总结了微观组织及结构对ODS钢性能的影响规律及影响机制,又综述了合金元素对ODS钢性能影响的相关研究进展;并对ODS钢在核电领域中的应用及相关研究进展进行了概括,介绍了激光技术在ODS钢制备及加工领域的应用,讨论了ODS钢在核电环境服役过程中存在的主要问题及进一步的研究方向,为核电站的安全运行提供有力的参考依据,对于核电材料的创新发展具有一定的参考作用.

Current research status of oxide dispersion strengthened steel and its application to nuclear power plant

Oxide dispersion strengthened (ODS) steel has received more and more attention from researchers, because of its excellent mechanical properties, high temperature stability, and radiation resistance. In nuclear power industry, ODS steel has become a candidate material for the fourth-generation nuclear reactor, especially for the first wall cladding material and high-temperature structural material such as supercritical water cooled reactor (SCWR). It has also been included in the corresponding SCWR material R & D planning. The manufacturing methods of ODS steel like mechanical alloying, hot isostatic pressing, plasma sintering, and corner extrusion were briefly reviewed. Effects of microstructures on the properties of ODS steel and its influence mechanism were summarized. Moreover, the research progress of the influence of alloying elements on the properties of ODS steel was summed up. The application of ODS steel in nuclear power and its related research progress were summarized. The application of laser technology in the processing of ODS steel was introduced. The main problems of ODS steel during service in nuclear power environment were discussed. The further possible research topics and directions were proposed, which provides a reliable reference for the safe operation of nuclear power plants and is helpful for the innovative development of nuclear power materials.