Abstract A novel ODS ferritic steel with ZrO2 dispersoids is developed as a candidate structural material for future fast reactor applications. Encouraged by our earlier results demonstrating the retention of crystallinity by ZrO2 dispersoids during milling, the 9Cr ODS steel powder has been synthesized under optimized ball milling conditions and subsequently characterized. The analysis of milled powder showed fine dispersions of ZrO2 with a size range of 2–10 nm. Upon annealing at 1223 K, precipitation of non-stoichiometric FeO was observed along with fine ZrO2 dispersoids. All the constituent phases are identified using Synchrotron XRD, Conventional and HRTEM. An excellent thermal stability has been manifested by the dispersoids as it retained its fine structure during the annealing treatment with ~ 95% of dispersoids measuring

中文翻译：

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新型 ZrO 2 弥散强化 9Cr 铁素体钢的开发：研磨粉末的表征和随后的退火行为

摘要 开发了一种具有 ZrO2 弥散体的新型 ODS 铁素体钢，作为未来快堆应用的候选结构材料。受我们早期结果的鼓舞，ZrO2 分散体在球磨过程中保持结晶度，9Cr ODS 钢粉已在优化的球磨条件下合成并随后进行表征。对研磨粉末的分析表明，ZrO2 呈细分散体，尺寸范围为 2-10 nm。在 1223 K 下退火后，观察到非化学计量的 FeO 沉淀以及细小的 ZrO2 分散体。使用同步加速器 XRD、常规和 HRTEM 识别所有组成相。分散体表现出优异的热稳定性，因为它在退火处理过程中保留了其精细结构，约 95% 的分散体测量