Zr-Cr-Y体系相平衡的实验测定和热力学计算

doi:10.19976/j.cnki.43-1448/TF.2022028

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Abstract The phase equilibria of the Zr-Cr-Y system was investigated by combination of key experiments and CALPHAD (calculation of phase diagrams) methods. Eight ternary alloys were prepared to determine the isothermal sections of the Zr-Cr-Y system at 1 000, 900, 800 and 600 ℃ by means of X-ray diffraction (XRD) and scanning electron microscope with energy dispersive X-ray spectroscopy (SEM/EDS). The results show that there are three-phase regions, i.e., BCC(Cr)+HCP(Y)+αCr₂Zr, BCC(Zr)+HCP(Y)+αCr₂Zr and HCP(Zr)+HCP(Y)+αCr₂Zr in this system. Based on the experimental equilibria data obtained in the present work, thermodynamic modeling of the Zr-Cr-Y ternary system was performed by the CALPHAD method. A set of accurate thermodynamic parameters of the Zr-Cr-Y system were obtained. The calculated results are in good agreement with most of the reliable experimental data.

Key words： Zr-Cr-Y system CALPHAD method thermodynamic model phase diagram experimental determination

Received: 18 March 2022 Published: 14 September 2022

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	QIAO Hui
	HU Biao
	ZENG Gang
	JIN Chenggang
	GAO Jian

Cite this article:

QIAO Hui,HU Biao,ZENG Gang, et al. Experimental determination and thermodynamic assessment of the Zr-Cr-Y ternary system[J]. Materials Science and Engineering of Powder Metallurgy, 2022, 27(4): 351-359.

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http://pmbjb.csu.edu.cn/EN/10.19976/j.cnki.43-1448/TF.2022028 OR http://pmbjb.csu.edu.cn/EN/Y2022/V27/I4/351

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