通过机械合金化(MA)和热等静压(HIP)技术制备14 YWT-ODS铁素体钢,将其分别在1100、1200和1300℃真空退火1h并测试显微硬度,用原子探针层析技术(APT)对这些样品进行分析.结果表明,与HIP态样品相比,1100℃退火样品硬度略有降低,1200℃退火样品硬度下降明显,1300℃退火样品硬度显著下降;1100℃退火样品中Y-Ti-O纳米团簇大小未发生明显变化,高于1200℃退火时,样品中Y-Ti-O团簇粗化明显,数量密度显著降低.
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