Real-time Observation on Coarsening of Second-Phase Droplets in Al-Bi Immiscible Alloy Using Synchrotron Radiation X-ray Imaging Technology

被引：9

作者：

Kang, Hui-Jun ^{[1
]}

Zhou, Peng ^{[1
]}

Cao, Fei ^{[1
]}

Zhu, Jing ^{[2
]}

Fu, Ya-Nan ^{[3
]}

Huang, Wan-Xia ^{[4
]}

Xiao, Ti-Qiao ^{[3
]}

Wang, Tong-Min ^{[1
]}

机构：

[1] Dalian Univ Technol, Sch Mat Sci & Engn, Key Lab Mat Modificat Laser Ion & Electron Beams, Minist Educ, Dalian 116024, Peoples R China

[2] Dalian Marine Propeller Co Ltd, Dalian 116021, Peoples R China

[3] Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai 201204, Peoples R China

[4] Chinese Acad Sci, Inst High Energy Phys, Beijing 100039, Peoples R China

来源：

ACTA METALLURGICA SINICA-ENGLISH LETTERS | 2015年 / 28卷 / 07期

基金：

中国国家自然科学基金; 中国博士后科学基金;

关键词：

Al alloys; Coarsening; Secondary phase; Droplet particles; IN-SITU OBSERVATION; DIRECTIONAL SOLIDIFICATION; MICROSTRUCTURE EVOLUTION; PB ALLOYS; SN-BI; MICROGRAVITY; GROWTH; COLLISION; POWDERS; MOTION;

D O I：

10.1007/s40195-015-0282-0

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

The coarsening process of second-phase droplet in solidifying A1-20 wt% Bi immiscible alloy is in situ studied using synchrotron radiation imaging technology. The collision-induced coarsening and Ostwald coarsening phenomena are directly observed and analyzed. It is found that through observation, collision-induced coarsening phenomenon occurs between droplets with little difference in radius, while Ostwald coarsening phenomenon occurs among droplets with much difference in radius. Moreover, the coarsening rate of Ostwald coarsening is much higher than that of collision-induced coarsening.

引用

页码：940 / 945

页数：6

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