TEM and HRTEM Study of Oxide Particles in an Al-alloyed High-Cr Oxide Dispersion Strengthened Steel withHf Addition
TEM and HRTEM Study of Oxide Particles in an Al-alloyed High-Cr Oxide Dispersion Strengthened Steel withHf Addition
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添加 Hf 的铝合金高铬氧化物弥散强化钢中氧化物颗粒的 TEM 和 HRTEM 研究
DOI：
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发表时间：
2016
影响因子：
3.1
通讯作者：
Zhigang Yang
中科院分区：
文献类型：
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作者：
窦鹏;Akihiko Kimura;Ryuta Kasada;Takanari Okuda;Masaki Inoue;Shigeharu Ukai;Somei Ohnuki;Toshiharu Fujisawa;Fujio Abe;Shan Jiang;Zhigang Yang
添加Hf的Al合金化高Cr氧化物弥散强化（ODS）铁素体钢中的纳米颗粒，即，用透射电子显微镜（TEM）和高分辨透射电子显微镜（HRTEM）对SOC-16（Fe-15 Cr-2 W-0.1Ti-4Al-0.62Hf-0.35Y_2O_3）进行了研究。相对于不添加Hf的Al合金化高Cr ODS铁素体钢，即，SOC-9（Fe-15.5Cr-2 W-0.1Ti-4Al-0.35Y2O3）中，氧化物纳米颗粒在SOC-16中的分散形态和共格性得到显著改善。几乎所有的小纳米粒子（直径10 nm）也主要被确定为立方Y2 Hf 2 O 7氧化物与阴离子缺乏的萤石结构。与SOC-9的结果进行了比较，并简要讨论了氧化物不寻常的热稳定性和辐照稳定性以及SOC-16的上级强度、优异的辐照耐受性和非凡的耐腐蚀性的潜在机制。
The nanoparticles in an Al-alloyed high-Cr oxide dispersion strengthened (ODS) ferritic steel with Hf addition, i.e., SOC-16 (Fe-15Cr-2W-0.1Ti-4Al-0.62Hf-0.35Y2O3), have been examined by transmission electron microscopy (TEM) and high resolution transmission electron microscopy (HRTEM). Relative to.an Al-alloyed high-Cr ODS ferritic steel without Hf addition, i.e., SOC-9 (Fe-15.5Cr-2W-0.1Ti-4Al-0.35Y2O3), the dispersion morphology and coherency of the oxide nanoparticles in SOC-16 were significantly improved. Almost all the small nanoparticles (diameter 10 nm) were also mainly identified as cubic Y2Hf2O7 oxides with the anion-deficient fluorite structure. The results presented here are compared with those of SOC-9 with a brief discussion of the underlying mechanisms of the unusual thermal and irradiation stabilities of the oxides as well as the superior strength, excellent irradiation tolerance and extraordinary corrosion resistance of SOC-16.