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Effect of Ce addition on macroscopic core-shell structure of Cu-Sn-Bi immiscible alloy |
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| Authors: | Jianqiang Li Bingqian Ma Soonki Min Zhangfu Yuan Likun Zang |
| Affiliation: | a State Key Laboratory of Multiphase Complex System, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China b School of Engineering and Technology, China University of Geosciences, Beijing 100083, China c Department of Materials Science and Engineering, Korea University, 5 Anam-dong, Seongbuk-gu, Seoul 136-713, Republic of Korea d Department of Energy & Resources Engineering, College of Engineering, Peking University, Beijing 100871, China |
| Abstract: | To investigate the evolution of bimetallic composite structure of immiscible alloy, a macroscopic core-shell type structure of 24Cu-16Sn-60Bi alloy was fabricated which consisted of (Cu3Sn, Cu10Sn3) central core and Bi periphery. Ce addition was found to be capable of enhancing remarkably Marangoni motion of secondary droplets in liquid matrix. The role of Ce addition was attributed to change interfacial tension of droplet/matrix. The results show the possibility of modulating core-shell type structure in immiscible materials by doping rare earth elements. |
| Keywords: | Solidification Casting Metals and alloys Marangoni motion Core-shell structure Metal matrix composites (MMC) |
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