Experimental verification of a model on melting and resolidification in a temperature gradient

被引：21

作者：

Fischer, S. ^{[1
]}

Zaloznik, M. ^{[2
]}

Seiler, J. -M. ^{[3
]}

Rettenmayr, M. ^{[1
]}

Combeau, H. ^{[2
]}

机构：

[1] Univ Jena, Inst Mat Sci & Technol, D-07743 Jena, Germany

[2] Lorraine Univ, CNRS, UMR 7198, Inst Jean Lamour,Dept SI2M, F-54042 Nancy, France

[3] CEA DEN Grenoble, DTN LPTM SE2T, F-38054 Grenoble 09, France

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2012年 / 540卷

关键词：

Metals and alloys; Temperature gradient zone melting; Mushy zone dynamics; Melting and resoldification; Simulation; Energy-dispersive X-ray spectroscopy; MIGRATION; SOLIDIFICATION; TRANSIENTS; AL;

D O I：

10.1016/j.jallcom.2012.06.075

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The mushy zone dynamics in a temperature gradient is studied for Al-Cu alloys by comparing results of a recently published model with experimental data. Local mean composition and solid fraction in the temperature gradient are calculated as a function of time, experiments are presented for annealing times of 300 and 600 s. Despite the complexity of the numerous processes in the mushy zone, the model describing diffusion and change of solid fraction yields reasonably good agreement. The fastest dynamics of the mushy zone occurs at locations with a high gradient of solid fraction. (C) 2012 Elsevier B.V. All rights reserved.

引用

页码：85 / 88

页数：4

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