Experimental analysis of seed effect on the directional solidification of Sn-Pb alloy

Long Sun Chao, Yu Ru Chen, Fang Chun Wang

研究成果: Conference contribution

摘要

In this paper, an experiment model for the directional solidification of Lead/Tin alloy is built and the effects of different-shape seeds on the microstructures on the solidification microstructure are investigated. In a casting process, the temperature and concentration fields will affect the microstructures of materials and this influence is the key point of improving their mechanical and physical properties. It is not easy to control the morphology of solidifying microstructures. The scheme of directional solidification can make the microstructures grow along a fixed direction and it is also the base of single-crystal growth. In the experiment, a poly-grain seed with the same initial concentration of the solidifying casting is used to induce the columnar growth at the bottom portion of the casting, which could avoid the equiaxed growth due to the high undercooling or cooling rate there. In the experimental analysis, we studied the influences of different geometry seeds on the constrained growth, the preferential growth direction of dendrite, the grain size, the temperature gradient, the growth rate, the primary arm spacing and the secondary arm spacing. From the microstructure observation, the adding seed casting reduced the chill-affected and extended the directional solidification zone. This is expected to have the better or more complete structure of directional solidification.

原文English
主出版物標題Physical and Numerical Simulation of Material Processing VI
編輯Jitai Niu, Jitai Niu, Guangtao Zhou, Guangtao Zhou
發行者Trans Tech Publications Ltd
頁面343-347
頁數5
ISBN(列印)9783037853061
DOIs
出版狀態Published - 2012
事件6th International Conference on Physical and Numerical Simulation of Materials Processing, ICPNS2010 - Guilin, China
持續時間: 2010 十一月 162010 十一月 19

出版系列

名字Materials Science Forum
704-705
ISSN(列印)0255-5476
ISSN(電子)1662-9752

Other

Other6th International Conference on Physical and Numerical Simulation of Materials Processing, ICPNS2010
國家China
城市Guilin
期間10-11-1610-11-19

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

指紋 深入研究「Experimental analysis of seed effect on the directional solidification of Sn-Pb alloy」主題。共同形成了獨特的指紋。

引用此