In:
Acta Physica Sinica, Acta Physica Sinica, Chinese Physical Society and Institute of Physics, Chinese Academy of Sciences, Vol. 54, No. 4 ( 2005), p. 1909-
Abstract:
At the composition of Ti4040Zr4040Ni2020 , a single_phase cylindr ical quasicrystalline alloy, 3mm in diameter and 15mm in length, can be fabr icated by a copper-mold casting method. Its quasicrystalline nature and structu ral homogeneity were confirmed by x_ray diffraction and transmission electron mi croscopy. According to compression and indentation tests at room_temperature, th e as_cast Ti4040Zr4040Ni2020 quasicry stalline rod has a hardness of 55GPa and a fracture strength of 542MPa. In particular, the Young's modulus (~43GPa) of Ti404Zr4040 Ni2020 quasicrystals is consid erably low while they possess a high Poisson's ratio (~048). Under monax ial compression, the Ti4040Zr4040Ni2020 quasicrystalline alloy e xhibits a highly elastic deformation capability of 125%. The cleavage fracture morphologies indicate a brittle fracture mechanism.
Type of Medium:
Online Resource
ISSN:
1000-3290
,
1000-3290
Language:
Unknown
Publisher:
Acta Physica Sinica, Chinese Physical Society and Institute of Physics, Chinese Academy of Sciences
Publication Date:
2005
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