Journal
JOURNAL OF NON-CRYSTALLINE SOLIDS
Volume 352, Issue 36-37, Pages 3936-3941Publisher
ELSEVIER
DOI: 10.1016/j.jnoncrysol.2006.07.002
Keywords
alloys; transition metals; crystals; quasicrystals; fracture; hardness
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A bulk Ti45Zr35Ni17Cu3 alloy, which consisted of the icosahedral quasicrystalline phase, was prepared by mechanical alloying(MA) and subsequent pulse discharge sintering. Ti45Zr35Ni17Cu3 amorphous powders (with particle size < 50 mu m) were obtained after mechanical alloying for more than 150 h from the mixture of the elemental powder. The transformation temperature range from amorphous phase to the quasicrystalline phase was from 400 K to 900 K. The mechanical properties of the bulk quasicrystalline alloy have been examined at room temperature. The Vickers hardness and compressive fracture strength were 620 +/- 40 and 1030 +/- 60 MPa, respectively. The bulk quasicrystalline alloy exhibited the elastic deformation by the compressive test. The fracture mode was brittle cleavage fracture. (c) 2006 Elsevier B.V. All rights reserved.
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