Synthesis, Processing and Mechanical Properties of NanophaseMetals: Intermetallic Compounds and Amorphous Alloys

提出了一种磁控溅射和蒸汽冷凝相结合的金属间合金和非晶合金合成新技术。收集纳米级颗粒，压实和烧结。合成了过渡金属/铝化物型金属间合金，并采用多种技术对合金进行了结构分析，表征了合金的化学均匀性、晶体结构和晶粒尺寸。加工、固结和烧结行为对金属间相的结构和力学性能的影响进行了研究。通过这些技术生产非晶相的能力也在研究中。通过热显微硬度分析和一些精选的压缩实验研究了纳米相材料的变形行为。

A new synthesis technique for production of intermetallic alloys and amorphous alloys is proposed that combines magnetron sputtering and vapor condensation. The nano-sized particles are collected, and compacted and sintered. Intermetallic alloys of the transition metal/aluminide type are synthesized, and the structure analyzed by several techniques to characterize the chemical homogeneity, crystal structure, and grain size. Effects of processing, consolidation, and sintering behavior are examined with respect to their effects on structure and mechanical properties of the intermetallic phases. The ability to produce amorphous phases by these techniques is also under examination. Deformation behavior of the nanophase materials is studied by hot microhardness analysis and a few selected compression experiments.