In Situ Observation of Solidification Process of AISI 304 Austenitic Stainless Steel

被引:31
|
作者
Huang Fu-xiang [1 ]
Wang Xin-hua [1 ]
Zhang Jiong-ming [1 ]
Ji Chen-xi [1 ]
Fang Yuan [2 ]
Yu Yan [2 ]
机构
[1] Univ Sci & Technol Beijing, Met & Ecol Engn Sch, Beijing 100083, Peoples R China
[2] Baoshan Iron & Steel Co Ltd, Ctr Technol, Adv Technol Inst, Shanghai 201900, Peoples R China
基金
中国国家自然科学基金;
关键词
stainless steel; confocal scanning laser microscope; strip casting; Thermo-Calc;
D O I
10.1016/S1006-706X(08)60271-X
中图分类号
TF [冶金工业];
学科分类号
0806 ;
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 gamma phase precipitated prior at delta-grain boundary at 1 452. 2 degrees C, the liquid steel disappeared at 1 431. 3 degrees C, and then the gamma phase precipitated on the 8 ferrite. Based on the Scheil-Gulliver solidification model, the solidification processes of AISI 304 stainless steel arc simulated using the Scheil model in Thermo-Cale, and the simulation results agree well with the results observed in the experiment.
引用
收藏
页码:78 / 82
页数:5
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