期刊
JOURNAL OF ALLOYS AND COMPOUNDS
卷 800, 期 -, 页码 419-449出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2019.05.341
关键词
B-Fe-Ti system; Ternary boride Ti2FeB2; X-ray diffraction; Electron microscopy; DTA/DSC; Phase diagram; CALPHAD modelling
资金
- German Federal Ministry for Education and Research via the M-era.Net transnational project [03XP0121C, 4105]
- National Academy of Science of Ukraine [III-9-16/0116U003506]
In the present paper, the complete ternary B-Fe-Ti system is thermodynamically modelled based on our own experimental results and information reported in literature. Series of key experiments were performed for the binary Fe-B, Fe-Ti and the ternary B-Fe-Ti systems in order to obtain parameters of invariant reactions. For this, 19 alloys were prepared and analysed in the as-cast and annealed conditions by means of SEM/EDS, SEM/EBSD, XRD and DTA/DSC techniques. A new ternary boride Ti2FeB2 with the crystal structure of Mo2FeB2 (an ordered derivative of U3Si2 crystal structure type) was revealed to exist at temperatures from 1273 K to solidus. The elaborated thermodynamic description was applied to calculate selected phase equilibria as to provide a comparison between calculated and experimental results. The calculations are shown to reproduce available experimental data entirely well. (C) 2019 Elsevier B.V. All rights reserved.
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