论文部分内容阅读
氧化物弥散强化(Oxide Dispersion Strengthened,ODS)铁素体钢,由于其优异的高温力学性能和良好的抗辐照能力被认为是快堆与超临界水堆燃料包壳管候选材料之一。传统ODS钢的制备方法是采用机械合金化法向铁素体钢中添加高熔点弥散细小的氧化物Y2O3而具有优良的高温强度,但合金的塑性和冲击韧性较差,热加工中存在严重的组织和性能各向异性,给合金制备或薄壁管带来极大的困难。
Oxide Dispersion Strengthened (ODS) ferritic steels are considered as one of the candidate materials for fuel cladding tubes for fast and supercritical water reactors because of their excellent high-temperature mechanical properties and good resistance to irradiation. The traditional ODS steel is prepared by mechanical alloying method to ferrite steel adding high melting point dispersed fine oxide Y2O3 and has excellent high temperature strength, but the alloy has poor plasticity and impact toughness, thermal processing, there are serious Tissue and performance anisotropy, to the preparation of the alloy or thin-walled tube brought great difficulties.