Research Information System
International Symposium on Powder Materials - Current Research and Industrial Practices at the 1999 TMS Fall Meeting, Ohio, United States Of America, 31 October - 04 November 1999, pp.197-210
A characteristic change in particle morphology during horizontal rotary ball milling at the onset of second stage of milling of different materials systems having different combination of elemental powder ductility, i. e., ductile (He atomised Al powder, Cu powder gas atomised under N-2, Ti powder) ductile to brittle (air atomised Al powder, TiAl(delta) powder, Mg powder produced under low and high pressure He) and brittle (TiH2 powder and Ar atomised Al-Li powder) one and ductile-ductile (Ar atomised Ti and Al powder mixture, Ar atomised Ti and air atomised Al powder mixture), ductile-brittle (TiH2 and Ar atomised Al powder mixture, TiH2 and dendritic Al powder mixture, and TiH2 and Ti powder mixture) and brittle-brittle (TiH2 and B powder mixture) two component powder mixtures with Zoz attritor were investigated on the basis of microscopic observations by SEM and particle sizing by Laser sizer for microstructural evolution. The results from SEM investigation and particle sizing show that the process of mechanical mi Iii ng of one component and mechanical alloying of two component powder mixtures are quite different for each system, depending on the ductility of the component powders.