Experimental Determination of Phase Equilibria in the Mn-Zn Binary System

IF 1.5 4区材料科学 Q4 CHEMISTRY, PHYSICAL

Journal of Phase Equilibria and Diffusion Pub Date : 2023-12-15 DOI:10.1007/s11669-023-01068-6

Daisuke Imatomi, Ryosuke Ishikawa, Akira Nakata, Tatsuya Ito, Kwangsik Han, Makoto Nagasako, Xiao Xu, Toshihiro Omori, Ryosuke Kainuma

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Abstract

Phase equilibria in the Mn-Zn binary system were experimentally determined by chemical composition examination, crystal structure determination, and thermal analysis. Major changes were detected for the β, ε, and δ phases. The β-B2 single-phase region could not be confirmed in the studied system because a disordered body-centered cubic structure, which is identical to the δMn phase, was confirmed in a quenched sample from the previously proposed region of β phase. The ε phase has been controversial whether the phase is separated into ε, ε₁, and ε₂ phases or not. By studying a diffusion couple and several alloy compositions, it was established that the ε, ε₁, and ε₂ phases are not separate and comprise a single ε phase. Furthermore, the δ phase is not present in the Zn-rich region of the system because the corresponding invariant reactions were not detected via thermal analysis.

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锰锌二元体系相平衡的实验测定

通过化学成分检查、晶体结构测定和热分析，实验确定了锰锌二元体系中的相平衡。发现了 β、ε 和 δ 相的主要变化。在所研究的体系中，β-B2 单相区无法得到证实，因为在先前提出的 β 相区的淬火样品中证实了与 δMn 相相同的无序体心立方结构。ε相是否分为ε、ε1和ε2相一直存在争议。通过对扩散耦合和几种合金成分的研究，确定了ε、ε1 和 ε2 相不是分离的，而是由单一的 ε 相组成。此外，δ相并不存在于体系的富锌区域，因为通过热分析并没有检测到相应的不变反应。

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来源期刊

Journal of Phase Equilibria and Diffusion 工程技术-材料科学：综合

CiteScore

2.50

自引率

7.10%

发文量

审稿时长

1 months

期刊介绍： The most trusted journal for phase equilibria and thermodynamic research, ASM International''s Journal of Phase Equilibria and Diffusion features critical phase diagram evaluations on scientifically and industrially important alloy systems, authored by international experts. The Journal of Phase Equilibria and Diffusion is critically reviewed and contains basic and applied research results, a survey of current literature and other pertinent articles. The journal covers the significance of diagrams as well as new research techniques, equipment, data evaluation, nomenclature, presentation and other aspects of phase diagram preparation and use. Content includes information on phenomena such as kinetic control of equilibrium, coherency effects, impurity effects, and thermodynamic and crystallographic characteristics. The journal updates systems previously published in the Bulletin of Alloy Phase Diagrams as new data are discovered.