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Synthesis and characterization of bulk amorphous/amorphous composite alloys through powder metallurgy route.
- Source :
- Journal of Materials Science; May2008, Vol. 43 Issue 9, p3118-3123, 6p, 5 Diagrams, 5 Graphs
- Publication Year :
- 2008
-
Abstract
- In the present study, amorphous Ni<subscript>60</subscript>Nb<subscript>20</subscript>Zr<subscript>20 </subscript>and Ti<subscript>50</subscript>Cu<subscript>28</subscript>Ni<subscript>15</subscript>Sn<subscript>7</subscript> alloy powders were synthesized separately using a mechanical alloying (MA) technique. The dual-amorphous-phased (Ti<subscript>50</subscript>Cu<subscript>28</subscript>Ni<subscript>15</subscript>Sn<subscript>7</subscript>)<subscript>100− x </subscript>(Ni<subscript>60</subscript>Nb<subscript>20</subscript>Zr<subscript>20</subscript>)<subscript> x </subscript> ( x = 0, 10, 20, and 30 vol%) powders were prepared by mixing the corresponding amorphous powders. The dual-amorphous-phased powders were then consolidated into bulk amorphous/amorphous composite (BA/AC) alloy discs. The amorphization status of as-prepared powders and bulk BA/AC composite discs was confirmed by X-ray diffraction (XRD) and transmission electron microscopy (TEM). The microstructure of the BA/AC discs showed that the Ni<subscript>60</subscript>Nb<subscript>20</subscript>Zr<subscript>20</subscript> phase is distributed homogeneously within the Ti<subscript>50</subscript>Cu<subscript>28</subscript>Ni<subscript>15</subscript>Sn<subscript>7 </subscript>matrix. The (Ti<subscript>50</subscript>Cu<subscript>28</subscript>Ni<subscript>15</subscript>Sn<subscript>7</subscript>)<subscript>70</subscript>(Ni<subscript>60</subscript>Nb<subscript>20</subscript>Zr<subscript>20</subscript>)<subscript>30</subscript> BA/AC disc exhibited a relative density of 96.6% and its Vickers microhardness was 726 kg/mm<superscript>2</superscript>. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00222461
- Volume :
- 43
- Issue :
- 9
- Database :
- Complementary Index
- Journal :
- Journal of Materials Science
- Publication Type :
- Academic Journal
- Accession number :
- 31474306
- Full Text :
- https://doi.org/10.1007/s10853-008-2504-6