Decomposition of icosahedral phase in Ti52Zr28Ni20 powder during electro-discharge sintering

Title
Decomposition of icosahedral phase in Ti52Zr28Ni20 powder during electro-discharge sintering
Authors
G.A. SongJ.S. ShinT.J. KangH.S. ChoiJ.K. LeeM.H. LeeT.S. Kim에릭플러리F. PrimaW.H. LeeK.B. Kim
Keywords
Quasicrystals; Powder metallurgy; Phase transitions; X-ray diffraction
Issue Date
2010-08
Publisher
Journal of alloys and compounds
Citation
VOL 504, NO S1, S302-S305
Abstract
A single pulse of 0.57–1.1 kJ/0.45 g-atomized spherical Ti52Zr28Ni20 powders in size range of 10–30 and 30–50μm consisting of a mixture of β-(Ti, Zr) and icosahedral phases was applied to understand the structural evolution of icosahedral phase during electro-discharge sintering (EDS). The structural analysis revealed that high electrical input energies leaded to complete decomposition of icosahedral phase into C14 Laves and β-(Ti, Zr) phases. Furthermore, the critical input energy inducing decomposition of icosahedral phase during EDS is dependent on the size of the powder.
URI
http://pubs.kist.re.kr/handle/201004/39117
ISSN
0925-8388
Appears in Collections:
KIST Publication > Article
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