Miettinen, Jyrki; Visuri, Ville-Valtteri; Fabritius, Timo (2020) Thermodynamic description of ternary Fe–B–X systems. Part 8 : Fe–B–Mo, with extension to quaternary Fe–B–Cr–Mo system. Archives of Metallurgy and Materials 66(1), pp. 281-295, https://doi.org/10.24425/amm.2021.134786
Thermodynamic description of ternary Fe–B–X systems. Part 8 : Fe–B–Mo, with extension to quaternary Fe–B–Cr–Mo system
|Author:||Miettinen, Jyrki1; Visuri, Ville-Valtteri1; Fabritius, Timo1|
1UNIVERSITY OF OULU, PROCESS METALLURGY RESEARCH UNIT, P.O. BOX 4300, FI-90014 UNIVERSITY OF OULU, FINLAND
|Online Access:||PDF Full Text (PDF, 0.5 MB)|
|Persistent link:|| http://urn.fi/urn:nbn:fi-fe202103107000
Polish Academy of Sciences,
|Publish Date:|| 2021-03-10
Thermodynamic optimizations of the ternary Fe-B-Mo system and its binary sub-system B-Mo are presented. The Fe-B-Mo description is then extended to the quaternary Fe-B-Cr-Mo system by assessing the ternary B-Cr-Mo system. The thermodynamic descriptions of the other binaries (Fe-B, Fe-Cr, Fe-Mo, B-Cr, and Cr-Mo) and the other ternaries (Fe-B-Cr and Fe-Cr-Mo) are taken from earlier studies. In this study, the adjustable parameters of the B-Mo, Fe-B-Mo, and B-Cr-Mo systems were optimized using the experimental thermodynamic and the phase equilibrium data from the literature. The solution phases of the system (liquid, bcc and fcc) are described with the substitutional solution model, and most borides are treated as stoichiometric phases or semistoichiometric phases, using a simple two-sublattice model for the latter. The system’s intermetallic phases, Chi, Mu, R, and Sigma (not dissolving boron) as well as boride M₃B₂, based on a formulation of (Cr,Fe)(Cr,Fe,Mo)₂(B)₂, are described with a three-sublattice model. Reasonable agreement is obtained between the calculated and measured phase equilibria in all four systems: B-Mo; Fe-B-Mo; B-Cr-Mo; and Fe-B-Cr-Mo.
Archives of metallurgy and materials
|Pages:||281 - 295|
|Type of Publication:||
A1 Journal article – refereed
|Field of Science:||
215 Chemical engineering
216 Materials engineering
This study was executed within the framework of the Genome of Steel pro-filing project. The Academy of Finland (project 311934) is acknowledged for funding this study.
© 2020. The Author(s). This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCom-mercial License (CC BY-NC 4.0, https://creativecommons.org/licenses/by-nc/4.0/deed.en which permits the use, redistribution of the material in any medium or format, transforming and building upon the material, provided that the article is properly cited, the use is noncommercial, and no modifications or adaptations are made.