中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
Formation of the microstructure in a rapid directionally solidified immiscible alloy

文献类型:期刊论文

作者Zhao, JZ; Ratke, L
刊名SOLIDIFICATION AND GRAVITY IV
出版日期2006
卷号508页码:31-36
关键词solidification immiscible alloy microstructure modeling
ISSN号0255-5476
通讯作者Zhao, JZ(jzzhao@imr.ac.cn)
英文摘要A model has been developed by taking into account the common action of the nucleation, the diffusional growth, the collisions and coagulations of the minority phase droplets and the spatial phase segregation to describe the microstructure evolution in an immiscible alloy solidified rapidly under the vertical directional solidification conditions. The model is satisfactorily verified by comparison with an analytically solvable case first, and then applied to predict the microstructure evolution in a directionally solidified Al-Pb alloy. The numerical results show that at a high solidification velocity a constitutional supercooling region appears in front of the solid/liquid interface and the liquid-liquid decomposition takes place there. A higher solidification velocity leads to a higher nucleation rate for a given temperature gradient and, therefore, a higher number density of the minority phase droplets. As a result, the average radius of droplets in the melt at the solid/liquid interface decreases with the solidification velocity.
WOS研究方向Materials Science ; Metallurgy & Metallurgical Engineering
语种英语
WOS记录号WOS:000236480800004
出版者TRANS TECH PUBLICATIONS LTD
源URL[http://ir.imr.ac.cn/handle/321006/87264]  
专题金属研究所_中国科学院金属研究所
通讯作者Zhao, JZ
作者单位1.Chinese Acad Sci, Met Res Inst, Shenyang 110016, Peoples R China
2.DLR, Inst Space Simulat, D-51140 Cologne, Germany
推荐引用方式
GB/T 7714
Zhao, JZ,Ratke, L. Formation of the microstructure in a rapid directionally solidified immiscible alloy[J]. SOLIDIFICATION AND GRAVITY IV,2006,508:31-36.
APA Zhao, JZ,&Ratke, L.(2006).Formation of the microstructure in a rapid directionally solidified immiscible alloy.SOLIDIFICATION AND GRAVITY IV,508,31-36.
MLA Zhao, JZ,et al."Formation of the microstructure in a rapid directionally solidified immiscible alloy".SOLIDIFICATION AND GRAVITY IV 508(2006):31-36.

入库方式: OAI收割

来源:金属研究所

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