Real-time Observation on Coarsening of Second-Phase Droplets in Al–Bi Immiscible Alloy Using Synchrotron Radiation X-ray Imaging Technology
来源期刊：Acta Metallurgica Sinica2015年第7期
论文作者：Hui-Jun Kang Peng Zhou Fei Cao Ya-Nan Fu Wan-Xia Huang Ti-Qiao Xiao 陈峻峰
文章页码：940 - 945
摘 要：The coarsening process of second-phase droplet in solidifying Al-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.
Hui-Jun Kang1，Peng Zhou1，Fei Cao1，Ya-Nan Fu3，Wan-Xia Huang4，Ti-Qiao Xiao3，Tong-Min Wang1
1. Key Laboratory of Materials Modification By Laser,Ion and Electron Beams (Ministry of Education),School of Materials Science and Engineering,Dalian University of Technology3. Shanghai Institute of Applied Physics,Chinese Academy of Sciences4. Institute of High Energy Physics,Chinese Academy of Sciences
摘 要：The coarsening process of second-phase droplet in solidifying Al-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.
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