先进反应堆用ODS F/M钢的强韧性匹配研究进展

Research Progress and Prospect of Strength-ductility Trade-off about Irradiation Resistant ODS F/M Steel

  • 摘要: 氧化物弥散强化(ODS)铁素体/马氏体(F/M)钢具有极高的缺陷阱密度,加之体心立方结构基体,使其具有优异的抗辐照性能,被确定为包括聚变堆和第4代裂变堆在内的先进核能系统关键部件候选材料,成为核材料领域的研究热点。有利于ODS钢抗辐照性能的显微组织特点同时也赋予了ODS钢优异的室温和高温强度。但和其他高强度材料类似,ODS钢也存在强度高,而塑韧性不足的矛盾,不利于复杂部件的加工,因此,实现ODS F/M钢的高强高韧成为面向工程应用的ODS F/M钢研究的一大热点和难点。目前,针对ODS F/M钢强韧化的研究还较少,已有的相关研究也不够系统和深入,本文主要对抗辐照ODS F/M钢的显微组织结构要求及其强韧化研究现状进行总结和分析,为先进反应堆用抗辐照ODS F/M钢的强韧化设计提供思路和参考。

     

    Abstract: Oxygen dispersion strengthened (ODS) ferrite/martensite (F/M) steel shows excellent radiation resistance due to the high sink strength and body-centered cubic structure matrix. It is considered as a candidate material for advanced nuclear energy systems and has become a research hotspot in the field of nuclear materials. Similar to other high strength materials, the strength of ODS steel increases while its toughness decreases, which is not benefit for the processing of complicated ODS steel components, and thus limits its engineering application. Achieving the strength-ductility trade-off of ODS F/M steel becomes a major challenging issue, however, the research about this issue is still not systematic and in-depth. Hence, the research status of the strength-ductility trade-off of ODS steel is summarized and analyzed in this paper, which provides research ideas for the strength-ductility trade-off of ODS F/M steel.

     

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