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Journal of Materials Science

, Volume 43, Issue 9, pp 3118–3123 | Cite as

Synthesis and characterization of bulk amorphous/amorphous composite alloys through powder metallurgy route

  • Hong-Ming Lin
  • Yu-Wei Lin
  • Pee-Yew Lee
Article

Abstract

In the present study, amorphous Ni60Nb20Zr20 and Ti50Cu28Ni15Sn7 alloy powders were synthesized separately using a mechanical alloying (MA) technique. The dual-amorphous-phased (Ti50Cu28Ni15Sn7)100−x (Ni60Nb20Zr20) x (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 Ni60Nb20Zr20 phase is distributed homogeneously within the Ti50Cu28Ni15Sn7 matrix. The (Ti50Cu28Ni15Sn7)70(Ni60Nb20Zr20)30 BA/AC disc exhibited a relative density of 96.6% and its Vickers microhardness was 726 kg/mm2.

Keywords

Differential Scanning Calorimeter Mechanical Alloy Composite Powder Bulk Metallic Glass Vickers Microhardness 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer Science+Business Media, LLC 2008

Authors and Affiliations

  1. 1.Department of Materials EngineeringTatung UniversityTaipeiTaiwan
  2. 2.Department of Materials Science and EngineeringNational Cheng Kung UniversityTainanTaiwan
  3. 3.Institute of Materials EngineeringNational Taiwan Ocean UniversityKeelungTaiwan

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