Synthesis of non-equilibrium phases in immiscible metals mechanically mixed by high pressure torsion

    Authors

    T. Miyazaki; D. Terada; Y. Miyajima; C. Suryanarayana; R. Murao; Y. Yokoyama; K. Sugiyama; M. Umemoto; Y. Todaka;N. Tsuji

    Comments

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    Abbreviated Journal Title

    J. Mater. Sci.

    Keywords

    AMORPHIZATION; ZIRCONIUM; SYSTEM; ARB; Materials Science, Multidisciplinary

    Abstract

    The structural changes in mechanically mixed metals of immiscible combinations of elements caused by bulk mechanical alloying (MA) through the use of high pressure torsion (HPT) were investigated in Ag-Ni and Nb-Zr systems. There was no alloying between Ag and Ni on atomic scale even after 100 rotations of HPT. On the other hand, the beta-Zr phase started to appear after HPT 2 rotations in the Nb-Zr system, even though beta-Zr is a high temperature phase. Further, Nb and Zr were completely mixed to form a bcc structured single phase after HPT 100 rotations. The sequence of alloying in the Nb-Zr system during HPT was discussed. These results clearly suggest that non-equilibrium phases can form in the Nb-Zr system by bulk MA by the use of HPT.

    Journal Title

    Journal of Materials Science

    Volume

    46

    Issue/Number

    12

    Publication Date

    1-1-2011

    Document Type

    Article

    Language

    English

    First Page

    4296

    Last Page

    4301

    WOS Identifier

    WOS:000288962200024

    ISSN

    0022-2461

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