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| In Situ Observation of Solidification Process of AISI 304 Austenitic Stainless Steel |
HUANG Fu��xiang1,WANG Xin��hua1,ZHANG Jiong��ming1,
JI Chen��xi1,FANG Yuan2,YU Yan2 |
| 1. Metallurgical and Ecological Engineering School, University of Science and Technology Beijing, Beijing 100083, China; 2. Advanced Technology Institute of Technology Center, Baoshan Iron and Steel Co Ltd, Shanghai 201900, China |
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Abstract The solidification process of AISI 304 stainless steel during cooling at a rate of 0��05 K/s has been observed in situ using a confocal scanning laser microscope (CSLM). The results show that the �� phase appeared first in liquid steel, as the temperature decreased, the �� phase precipitated prior at �Ī�grain boundary at 1 452��2 ��, the liquid steel disappeared at 1 431��3 ��, and then the �� phase precipitated on the �� ferrite. Based on the Scheil��Gulliver solidification model, the solidification processes of AISI 304 stainless steel are simulated using the Scheil model in Thermo��Calc, and the simulation results agree well with the results observed in the experiment.
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Received: 01 January 1900
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2008, Vol. 15 
