Mechanically Prepared Nanocrystalline Materials (Overview)

Abstract

We review recent results in new materials development by mechanical preparation techniques (mechanical alloying and milling) with an emphesis on research performed in Grenoble. Two general catagories are considered: nanocrystalline and amorphous materials obtained by polymorphous (iso-compositional) transformations and mechanical alloying of highly supersaturated solid-solutions. We then consider nanostructures obtained on the path back towards equilibrium structures by nucleation and growth processes or by phase-separation. Design of new magnetic and mechanically attractive nanocomposites using amorphous precursors and metal-ceramic nanocomposites obtained by reactive milling are also considered. © 1995, The Japan Institute of Metals. All rights reserved.