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Thermodynamic description of the Mn-Si-Zn system

Science China(Technological Sciences) 2012年第2期55卷 475-483页

作者： ZHANG LiJun DU Yong XU HongHui ZHAO JingRui State Key Laboratory of Powder Metallurgy Central South UniversityChangsha 410083China Interdisciplinary Centre for Advanced Materials Simulation(1CAMS) Ruhr-Universitiit BochumBochum 44801Germany

The experimental phase equilibria of the Mn-Si-Zn system available in the literature were critically *** assessment of the Mn-Si-Zn system was then performed in the framework of CALPHAD(CALculation of PHAse Diagram) method on the basis of the experimental data in the *** optimal thermodynamic parameters of the ternary system were then obtained,yielding a good agreement with most of the experimental *** complete liquidus projection and reaction scheme was also presented for the Mn-Si-Zn *** is noteworthy that a stable closed liquid miscibility gap appears in the computed ternary phase diagrams,even though it is metastable in three boundary *** occurrence of such a closed miscibility gap can be predicted by a criterion considering the general thermodynamic rules and the features of the three constituent binary systems.

关键词： Mn-Si-Zn alloy system phase diagram CALPHAD liquid miscibility gap

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Design and Development of the Self-assembled Composite Materials

Design and Development of the Self-assembled Composite Mater...

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第十二届全国相图学术会议

作者：王翠萍刘兴军大沼郁雄贝沼亮介石田清仁 Department of Materials Science and Engineering Xiamen University Xiamen 361005P．R．China Department of Materials Science and Engineering Xiamen University Xiamen 361005P．R．China Department of Materials ScienceGraduate School of EngineeringTohoku UniversitySendai 980-8579Japan Department of Materials Science Graduate School of Engineering Tohoku UniversitySendai 980-8579Japan Department of Materials Science Graduate School of Engineering Tohoku UniversitySendai 980-8579Japan Department of Materials Science Graduate School of Engineering Tohoku UniversitySendai 980-8579Japan

＜正＞The Cu-Fe base alloys with liquid immiscible were prepared by conventional gas atomization and solidification process, we find that the self-assemble composite microstructures in powders and bulk materials can be obtained under gravity conditions. The minor liquid phase always forms the center of composite microstructure. The origin of the formation of such composite microstructure can be explained by Marangoni motion on the basis of the temperature dependence of the interfacial energy.

关键词： phase diagram liquid miscibility gap composite materials

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