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In Situ Observation of Solidification Process of AISI 304 Austenitic Stainless Steel
作者姓名:HUANG Fuxiang  WANG Xinhua  ZHANG Jiongming  JI Chenxi  FANG Yuan  YU Yan
作者单位: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
摘    要: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 8 phase appeared first in liquid steel, as the temperature decreased, the γ phase precipitated prior at δ-grain boundary at 1452. 2 ℃, the liquid steel disappeared at 1 431.3 ℃, and then the γ phase precipitated on the δ 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.

关 键 词:不锈钢  共焦扫描散射显微镜  带状浇铸  示温涂料
收稿时间:1900-01-01;

In Situ Observation of Solidification Process of AISI 304 Austenitic Stainless Steel
HUANG Fu-xiang,WANG Xin-hua,ZHANG Jiong-ming,JI Chen-xi,FANG Yuan,YU Yan.In Situ Observation of Solidification Process of AISI 304 Austenitic Stainless Steel[J].Journal of Iron and Steel Research,2008,15(6):78-0.
Authors:HUANG Fu-xiang  WANG Xin-hua  ZHANG Jiong-ming  JI Chen-xi  FANG Yuan  YU Yan
Affiliation:1. Metallurgical and Ecologieal 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
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 δ phase appeared first in liquid steel, as the temperature decreased, the γ phase precipitated prior at δ-grain boundary at 1 452. 2 °C, the liquid steel disappeared at 1 431. 3 °C, and then the γ phase precipitated on the δ 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.
Keywords:stainless steel  confocal scanning laser microscope  stripcasting  Thermo-Calc
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