Abstract
The isothermal section of the phase diagram of the ternary system Dy–Ni–Ti at 773 K was investigated by X-ray diffraction, differential thermal analysis, optical microscopy and electron microscopy techniques. It consists of 14 single-phase regions, 25 two-phase regions and 12 three-phase regions. At 773 K, the maximum solid solubilities of Ti in Ni, Dy 2Ni 17, DyNi 5, Dy 2Ni 7, DyNi 3 and DyNi 2 are about 7.5 at.% Ti, 5.0 at.% Ti, 3.5 at.% Ti, 2.0 at.% Ti, 3.0 at.% Ti, and 4.0 at.% Ti, respectively. The existence of any ternary compound was not observed. The decomposition of the NiTi compound was not observed under the present conditions.
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