Pr基大块纳米晶合金及其特性研究

研究了Pr₆₀Al₁₀Ni₁₀Cu₂₀ 大块金属玻璃 的结构和磁性随Fe含量 的变化关系，结果表明Pr基合金逐步从玻璃状态，转变为非晶与纳米晶的复合状态，最后成 为纳米晶合金，Pr基合金的磁性也相应地发生变化.提出了一种通过对大块稀土基金属玻璃 进行Fe掺杂，制备出微观结构和性能具有可调控性的大块纳米晶合金的方法, 并讨论了纳米 晶结构和性能的关系. 关键词： 金属玻璃 大块纳米晶 掺杂

Pr-based bulk nanocrystalline alloy and its properties

The formation of bulk nanocrystalline alloys based on the Pr₆₀Al ₁₀Ni ₁₀Cu₂₀ bulk metallic glass forming alloy by doping Fe is r eported. B y varying the content of Fe, the microstructure of the Pr-based alloy changes pr ogressively from full glassy state to composite with nanocrystalline particles e mbedded in the glassy matrix, and finally into nano-structured state accompanied by the gradual magnetic property changes. A simple approach to obtain the bulk nanocrystalline material with controllable microstructure is presented, and the relation between microstructure and property is discussed.