Decomposition of icosahedral phase in Ti52Zr28Ni20 powder during electro-discharge sintering

作者：Song G A; Shin J S; Kang T J; Choi H S; Lee J K; Lee M H; Kim T S; Fleury E; Prima F; Lee W H; Kim K B^*

来源：Journal of Alloys and Compounds, 2010, 504: S302-S305.

DOI：10.1016/j.jallcom.2010.02.060

• Quasicrystals
• Powder metallurgy
• Phase transitions
• X-ray diffraction

A single pulse of 0.57-1.1 kJ/0.45 g-atomized spherical Ti52Zr28Ni20 powders in size range of 10-30 and 30-50 mu m consisting of a mixture of beta-(Ti, Zr) and icosahedral phases was applied to understand the structural evolution of icosahedral phase during electro-discharge sintering (EDS). The structural analysis revealed that high electrical input energies leaded to complete decomposition of icosahedral phase into C14 Laves and beta-(Ti, Zr) phases. Furthermore, the critical input energy inducing decomposition of icosahedral phase during EDS is dependent on the size of the powder.

• 出版日期2010-8