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J Mater Sci Technol  2009, Vol. 25 Issue (03): 370-372    DOI:
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Amorphous Formation in an Undercooled Binary Ni-Si Alloy under Slow Cooling Rate
Yiping Lu, Gencang Yang, Xiong Li , Yaohe Zhou
State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi0an 710072, China
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High undercooling up to 392 K was achieved in eutectic Ni70.2Si29.8 alloy melt by using glass fluxing combined with cyclic superheating. A small quantity of amorphous phase was obtained in bulk eutectic Ni70:2Si29:8 alloy when undercooling exceeds 240 K under slow cooling conditions (about 1 K/s). The amorphous phase was
confirmed by high-resolution transmission electron microscopy and differential scanning calorimetry.

Key words:  Eutectic alloy      Amorphous phase      Rapid solidification     
Received:  22 April 2008     



the National Natural Science Foundation of China (No. 50395103)
the Doctorate Foundation of Northwestern Polytechnical University (CX200506)

Corresponding Authors:  LU Yi-Ping     E-mail:

Cite this article: 

Yiping Lu,Gencang Yang,Xiong Li,Yaohe Zhou. Amorphous Formation in an Undercooled Binary Ni-Si Alloy under Slow Cooling Rate. J Mater Sci Technol, 2009, 25(03): 370-372.

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