Author/Authors :
Mattern، نويسنده , , N. N. YOKOYAMA، نويسنده , , Y. and Mizuno، نويسنده , , A. and Han، نويسنده , , J.H. and Fabrichnaya، نويسنده , , O. and Harada، نويسنده , , T. and Kohara، نويسنده , , S. and Eckert، نويسنده , , J.، نويسنده ,
Abstract :
The phase equilibria of the binary Nd–Zr system have been investigated by combining the gas levitation technique with in situ high energy synchrotron X-ray diffraction at elevated temperatures. The Nd–Zr system is of a eutectic type. From the diffraction data the liquidus line was experimentally determined between 1300 and 1800 K. At T=1274±10 K the eutectic reaction L↔ bcc-Nd+bcc-Zr is evident. The eutectic composition x=7±2 at% Zr is determined from the analysis of the microstructure of cast alloys in accordance with the in situ diffraction data. Based on the experimental data the Nd–Zr phase diagram is presented and a self-consistent thermodynamic description is given.
Keywords :
Nd–Zr phase diagram , CALPHAD , Thermodynamic assessment , Conical nozzle levitation , In situ X-ray diffraction
