研究了MA法和热压烧结工艺制备的Fe84Nb7B9和Fes0Ti8B12合金粉末的产物及其块体合金的微观组织结构和磁性能.结果表明:(1)20hMA后,Fe84Nb7B9和Fes0Ti8B12均形成了单相bcc纳米晶过饱和固溶体,相对前者,后者纳米晶组织热稳定性明显提高,过饱和固溶体相分解温度略有降低;(2)在30MPa/900℃/0.5h热压条件下,Fe84Nb7B9和Fe80TisB12块体合金相对密度分别为96.7%和95.5%,相对前者(多相组织),后者由超细晶(50～200nm)单相c-Fe组成;(3)Fes0TisB12块体合金软磁性能(σs=198.6emu/g,Hc=54.6Oe)明显高于Fe84Nb7B9块体合金(σs=162.9emu/g,Hc=105.1Oe),此与纳米晶粉末在热压烧结过程中所形成相的种类和晶粒尺寸大小有关.
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