1 Layout
نویسنده
چکیده
Mechanical alloying of Ti-Si and NiTi was performed by high-energy ball milling at ambient temperature. The structural and compositional evolutions during mechanical alloying were investigated. Results showed that the crystallite size of mechanically alloyed Ti-Si and Ni-Ti powders decreased with increasing milling time and the steady-state crystallite size was approximately 10 nm. The mechanically alloyed TiSi and Ni-Ti powders were predominantly nanocrystalline with traces of the remnant amorphous phase. It was found that a significant increase in solid solubility of Si (or Ni) in Ti was achieved by mechanical alloying. The optimum milling time for the synthesis of nanocrystalline/amorphous Ti-Si and Ni-Ti with least impurities was 75 h.
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