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Analysis of Ball‐Milled ZrAlNiCu Bulk Metallic Glass Powders
Author(s) -
Wu Jiang,
Margueron Samuel,
AllainBonasso Nathalie,
Bourson Patrice,
Gaffet Eric,
Dong Chuang,
Grosdidier Thierry
Publication year - 2011
Publication title -
advanced engineering materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.938
H-Index - 114
eISSN - 1527-2648
pISSN - 1438-1656
DOI - 10.1002/adem.201000339
Subject(s) - materials science , crystallization , differential scanning calorimetry , ball mill , amorphous metal , tetragonal crystal system , raman spectroscopy , annealing (glass) , metallurgy , diffraction , thermal analysis , chemical engineering , analytical chemistry (journal) , crystallography , thermal , alloy , crystal structure , thermodynamics , chemistry , physics , optics , engineering , chromatography
This manuscript gives the first results of an ongoing research project focusing on the crystallization processes of Zr 65 Al 7.5 Ni 10 Cu 17.5 (Z1) and Zr 58 Al 16 Ni 11 Cu 15 (Z2) bulk metallic glasses. Crystallization, induced by ball‐milling and thermal annealing, has been observed and compared using differential scanning calorimetry, X‐ray diffraction and Raman spectroscopy. The thermal crystallization end‐products obtained for the two alloys were different: tetragonal Zr 2 Cu and hexagonal Zr 6 Al 2 Ni for Z1, while Z2 contained hexagonal Zr 2 Al, big cubic Zr 2 Ni and some α‐Zr solid solution. For both alloys, the thermal crystallization products were different from those obtained after ball‐milling. Interestingly, however, the stable phase obtained after sufficient mechanical milling was an FCC phase for both alloys. Raman spectroscopy suggests that nitrogen has an effect on the formation of this stable final product.