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首页> 外文期刊>Journal of Nuclear Materials: Materials Aspects of Fission and Fusion >Effects of contents of Al, Zr and Ti on oxide particles in Fe-15Cr-2W-0.35Y(2)O(3) ODS steels
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Effects of contents of Al, Zr and Ti on oxide particles in Fe-15Cr-2W-0.35Y(2)O(3) ODS steels

机译：Al，Zr和Ti含量在Fe-15cr-2w-0.35Y（2）O（3）ODS钢中氧化物颗粒对氧化物颗粒的影响

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FeCrAl oxide dispersion strengthened (ODS) steel is one of the most promising candidate cladding materials of generation IV nuclear reactors because of its excellent resistance to not only corrosion but also creep and irradiation due to the ultrahigh density nanometer-scale oxides. Effects of the contents of Al, Zr and Ti on the crystal and metal/oxide interface structures of the particles in Fe-15Cr-3.7Al-2W-0.1Ti-0.6Zr-0.35Y(2)O(3) (3.7Al-0.1Ti-0.6Zr) and Fe-15Cr-3.8Al-2W-0.12Ti-0.5Zr-0.35Y(2)O(3) (3.8Al-0.12Ti-0.5Zr) were studied by high resolution transmission electron microscopy (HRTEM). For 3.7Al-0.1Ti-0.6Zr and 3.8Al-0.12Ti-0.5Zr ODS steels, phase identification was accomplished on 175 and 213 particles, respectively, which have peak number fraction and, therefore, represent the oxides contributing most significantly to the macroscopic properties of the ODS steels. The proportions of various types of oxides were determined. For 3.7Al-0.1Ti-0.6Zr and 3.8Al-0.12Ti-0.5Zr ODS steels, the proportions of Y-Zr complex oxides are similar to 87.4% and similar to 54.4% while the number fractions of Y-Al complex oxides are similar to 3.5% and similar to 5.2%, respectively, indicating that 0.5-0.6 wt.% Zr inhibits the formation of Y-Al complex oxides remarkably while prompts the significant occurrence of Y-Zr complex oxides. For 3.7Al-0.1Ti-0.6Zr and 3.8Al-0.12Ti-0.5Zr ODS steels, the proportions of Y-Ti complex oxides are similar to 5.7% and similar to 36.6%, respectively, indicating it is effective for increasing the proportion of Y-Ti complex oxides by increasing the content of Ti from 0.09 wt.% to 0.12 wt.% with the content of Zr decreased from 0.63 wt.% to 0.49 wt.%. The crystallographic orientation correlations of the oxides and matrix were determined. The formation and refinement mechanisms of oxides and, moreover, the reasons of the unusual irradiation tolerance and thermal stability of the ODS steel were discussed based on the results. (C) 2020 Elsevier B.V. All rights reserved.
机译：铁铬氧化物弥散强化（ODS）钢是第四代核反应堆的最有希望的候选覆面材料由于其优异的耐不仅腐蚀的一个，而且抗蠕变和辐照由于超高密度纳米级氧化物。的Al，Zr和Ti对晶体和金属/在铁的15Cr-3.7Al-2W-0.1Ti-0.6Zr合金-0.35Y的颗粒氧化物界面结构的内容的效果（2）O（3）（3.7Al -0.1Ti-0.6Zr合金）和Fe-的15Cr-3.8Al-2W-0.12Ti-0.5Zr-0.35Y（2）O（3）（通过高分辨率透射电子显微镜进行了研究3.8Al-0.12Ti-0.5Zr） （HRTEM）。对于3.7Al-0.1Ti-0.6Zr合金和3.8Al-0.12Ti-0.5Zr ODS钢，相鉴定对175和213的颗粒，分别具有峰值数量分数，因此完成的，代表这些氧化物有助于最显著到的ODS钢的宏观性质。各种类型的氧化物的比例进行测定。对于3.7Al-0.1Ti-0.6Zr合金和3.8Al-0.12Ti-0.5Zr ODS钢，Y-Zr的复合氧化物的比例类似于87.4％和相似54.4％，而Y型Al的复合氧化物的数量级分类似〜3.5％，并且类似于分别为5.2％，这表明0.5-0.6％（重量）的Zr抑制Y型Al的复合氧化物的形成显着，同时提示钇锆复合氧化物的显著发生。对于3.7Al-0.1Ti-0.6Zr合金和3.8Al-0.12Ti-0.5Zr ODS钢，Y-Ti系复合氧化物的比例是相似的5.7％，类似于36.6％，分别表明它是有效地增加的比例通过与Zr的含量从0.09重量％增加Ti的含量至0.12％（重量）Y型钛复合氧化物的从0.63％（重量）减少到0.49％（重量）。氧化物和基体的结晶学取向的相关性进行了测定。形成与氧化物的细化机制，此外，基于该结果进行讨论的ODS钢的不寻常的照射耐受性和热稳定性的原因。 （c）2020 Elsevier B.v.保留所有权利。

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