Formation of Amorphous and Nanocrystalline Ti-Cu-Ni Alloys by Mechanical Alloying (特集 アモルファス-ナノ・グラニュラ-機能材料 1) Formation of Amorphous and Nanocrystalline Ti-Cu-Ni Alloys by Mechanical Alloying
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Amorphous and nanocrystalline powders of Ti<SUB>x</SUB>Cu<SUB>90-x</SUB>Ni<SUB>10</SUB> (x=20, 30, 40, 50 and 60 at.%) have been synthesized by the mechanical alloying method under argon atmosphere. The mechanically alloyed powders show halo patterns in the X-ray diffraction patterns for 30 ?? × ?? 60 and disordered fcc structures, with nanocrystalline grains for x=20. In the amorphous powders, the peak position of 2θ shifts to the low angle side almost linearly with increasing x. In particular, the amorphous phase is earlier formed with increasing x from 20 to 50. In the differential scanning calorimetry experiment, crystallization temperature and peak temperature increase linearly for 30 ?? ×<60. The average particle size estimated by scanning electron microscopy is about 11 gm for 30 ?? × ?? 60.
- J. Jpn. Soc. Powder Powder Metallurgy
J. Jpn. Soc. Powder Powder Metallurgy 43(5), 595-601, 1996-05-15
Japan Society of Powder and Powder Metallurgy