Development of Oxide Dispersion Strengthened Steels for High Temperature Nuclear Structural Applications
Development of Oxide Dispersion Strengthened Steels for High Temperature Nuclear Structural Applications
复制标题
高温核结构应用氧化物弥散强化钢的开发
DOI：
10.1007/978-0-85729-493-7_89
复制
发表时间：
2011
期刊：
影响因子：
--
通讯作者：
K.Maruyama
中科院分区：
文献类型：
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作者：
H.Zhu;T.Wei;R.Harrison;L.Edwards;K.Maruyama
氧化物弥散强化（ODS）钢是最有希望的高温核应用材料。机械合金化和随后的热机械处理应用于制造ODS钢。最近已经开发了改进的化学组成和制造工艺以生产具有高数量密度的纳米级氧化物颗粒和微观结构中的高位错密度的超细晶粒尺寸。通常，细晶粒在高温下降低抗蠕变性。然而，细晶粒ODS钢不仅表现出良好的耐辐射性，而且还具有优越的上级蠕变性能。本文综述了近年来发展起来的ODS钢的化学成分、制造工艺、显微组织特征、热蠕变性能和抗辐射性能。特别注意的是细尺度的微观结构特征对热蠕变和耐辐射性的影响。
Oxide dispersion strengthened (ODS) steels are the most promising candidate materials for high temperature nuclear applications. Mechanical alloying and subsequent thermomechanical treatments are applied to manufacture the ODS steels. Recently improved chemical composition and manufacturing processes have been developed to produce ultrafine grain size with high number-density of nanoscale oxide particles and high dislocation density in the microstructure. Usually, fine grains degrade creep resistance at elevated temperatures. However, the fine-grained ODS steels exhibit not only good radiation resistance, but also superior creep properties. The present paper reviews the chemical compositions, manufacturing processing, microstructural features, thermal creep properties and radiation resistance of recently developed ODS steels. Special attention is paid to the effects of the fine-scale microstructural features on thermal creep and radiation resistance.