中国有色金属学报(英文版)
Transactions of Nonferrous Metals Society of China
| Vol. 21 No. 2 February 2011 |
confocal scanning laser microscope
（1. School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China;
2. School of Mechanical and Power Engineering, East China University of Science and Technology,
Shanghai 200237, China;
3. Baosteel Research Institute, Baoshan Iron and Steel Co., Ltd., Shanghai 201900, China）
Abstract:The solidification process of a conventional superalloy, IN718, was investigated by confocal scanning laser microscope (CSLM). The liquid fraction during solidification was obtained as a function of real time and temperature in reference with the in-situ observation. The characteristics of L→γ transformation were analyzed and the γ growing rate of each stage was also calculated. Scheil equation was employed to predict the segregation behavior, and the predict results are in consistence with the experimental results. As a result, the confocal scanning laser microscope shows a great potential for solidification process research.
Key words: IN718 alloy; solidification; in-situ; confocal scanning laser microscope; segregation
