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The Role of Sn Substitution for Si And B to Enhance the Amorphization of Mechanically-Milled Ti50Ni22Cu18Al4Si4B2 Alloy |
ZHANG Laichang; SHEN Zhiqi; XU Jian |
Shenyang National Laboratory for Materials Science; Institute of Metal Research; The Chinese Academy of Sciences; Shenyang 110016 |
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Cite this article:
ZHANG Laichang; SHEN Zhiqi; XU Jian. The Role of Sn Substitution for Si And B to Enhance the Amorphization of Mechanically-Milled Ti50Ni22Cu18Al4Si4B2 Alloy. Acta Metall Sin, 2004, 40(9): 981-986 .
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Abstract Elements Si and B in the
Ti50Ni22Cu18Al4Si4B2
alloy are substituted with Sn to
form the Ti50Ni22Cu18Al4Snx(Si0.67B0.33)6-x (x=0,3,6) series
alloys. In all cases, mechanical
milling of the prealloyed fragments
results in the amorphization of the alloys. With increasing
the Sn content in the alloys, the fraction of residual α-Ti
crystallites in the final milled product
was reduced. For the Ti50Ni22Cu18Al4Sn6
alloy, in which the Si and B are completely replaced
with Sn, the nearly complete amorphization is achievable.
A single amorphous phase, similar to the melt-quenched glass,
formed in the milled alloy. Such a ball-milled glassy alloy
exhibits a large supercooled liquid region about 66 K.
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Received: 05 April 2004
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