Phase equilibria of the Tb-Fe-B system at 1000, 900 and 800 °C

被引：0
|
作者：
Qiu, Chengliang [1 ]
Liu, Shuhong [1 ]
Yang, Wei [1 ]
Mei, Jiacheng [1 ]
Zhai, Wei [2 ]
Du, Yong [1 ]
机构：
[1] Cent South Univ, Natl Key Lab Sci & Technol High Strength Struct Ma, Changsha 410083, Peoples R China
[2] Northwestern Polytech Univ, Sch Phys Sci & Technol, Xian 710072, Peoples R China
来源：
MATERIALS CHARACTERIZATION | 2025年 / 222卷
关键词：
Tb-Fe-B; Phase equilibria; Isothermal sections; Ternary compounds; RARE-EARTH; DY; INTERMETALLICS; DIFFRACTION; BORIDES; LU; GD; ER; ND; HO;
D O I：
10.1016/j.matchar.2025.114793
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Phase equilibria of the Tb-Fe-B system were investigated at 1000, 900 and 800 degrees C using X-ray diffraction (XRD) and electron probe microanalysis (EPMA) on annealed alloys with a B content <= 50 at.%. Isothermal sections at 1000, 900 and 800 degrees C were then proposed, revealing the similar phase equilibria except for the phase regions containing liquid, which originates from the binary Fe-Tb system at 900 and 1000 degrees C. Five ternary compounds of Tb2Fe14B, TbFe4B4, Tb5Fe2B6, Tb3FeB7 and TbFeB4 were observed to be stoichiometric and the solubilities of Tb in Fe-B, Fe in Tb-B and B in Tb-Fe binary phases were measured to be negligible. Additionally, the ternary compound TbFe2B2 was not detected in this work.
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页数：9
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