材料期刊网

1. 首页
2. 检索结果页

原词结果 | 译词结果

THERMODYNAMIC TREATMENT OF MULTICOMPONENT SYSTEMS USING INTERACTION PARAMETERS

Z. T. Ma , J Ohser and D. Janke(Institute of Iron and Steel Technology , Freiberg University of Mining and Technology , Germany )

金属学报(英文版)

The partial thermodynamic functions of solvent and solutes in multicomponent systems have been expressed in terms of the interaction parameters. The corresponding analytical expressions of the activity coefficients of solvent and solutes enable to de scribe the thermodynamic properties of multicomponent systems. The advantages of this treatment are found in its thermodynamic consistency and a rather small influ ence of the higher order interaction parameters on the properties of the systetms.

关键词: thermodynamics; activity; model

OXIDE METALLURGY-ITS PURPOSES AND PRACTICAL APPROACHES

Z. T. Ma and D. Janke(Institute of Iron and Steel Technology , Freiberg University of Mining and Technology , Germany)

金属学报(英文版)

Useder certain conditions, nonmctallic inclusions such as oxides, sulfides, nitrides and carbides are no longer harmful to sted service properties. With the new concept of oxide metallurgy, these properties can be improved by generating fine oxide inclusions which serve as heterogeneous nuclei for sulfide and fine ferrite[1-4]. A novel continuous casting (CC) process is expected to be created with the utilization of oxide metallurgy. This is also useful for the forthcoming technologies of direct rolling and near-net-shape casting. The main idea of oxide metallurgy consists of an alternative oxidation technology. It is based on steels treated by complex metals such as Ti, Zr, Ti-Zr alloys and rare earth metals. The selected deoxidants should follow the required conditions which are concluded in this paper.

关键词: oxide , null , null , null

AN ASSESSMENT OF INTERACTION PARAMETERS IN BINARY　METALLIC SYSTEMS

Z. T. Ma and D. Janke(Institute of Iron and Steel Technology , Freiberg University of Mining and Technology , Germany)

金属学报(英文版)

An approach of describing the thermodynamics of binary alloys is developed which is based on an exact expression of infinite MacLaurin series of molar excess Gibbs free energy. This new approach is successfully used to represent the thermodynamics of binary alloys at higher concentrations. The present results reveal that it is an improper way to evaluate first and second-order interaction parameters simultaneously from the experimental data in the range of higher concentrations due to an inadequate accuracy Of high temperature experiments.

关键词: thermodynamics , null , null , null

THERMODYNAMIC PROPERTIES OF NITROGEN IN Fe-Cr-Ni ALLOYS AT 1873K

Z.T.Ma and D. Janke (Institute of Iron and Steel Technology , Freiberg University of Mining and Technology , Germany)

金属学报(英文版)

Thermodynamic behavior of nitropen in Fe-Cr-Ni alloys at 1873K is discussed in the present study. The dependence of upon the content of Cr in Fe-Cr-Ni-N melt is expressed. The present authors' formalism[17] developed for describing thermodynamics of metallic multicomponent systems is successfully applied to the Fe-Cr-Ni-N quaternary system.

关键词: Fe-Cr-Ni alloy , null , null

出版年份

刊物分类

相关作者

相关热词