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KINETICS OF DESULFURIZATION OF LOW TITANIA SLAG IN BLAST FURNACE

YAN Yuzhang , LAN Hong , Chongqing University , chongqing , China YAN Yuzhang , Associate Professor , Department of Metallurgy and Materials Engineering , Chongqing University , Chongqing 630044 , China

金属学报(英文版)

The desulphurizing reaction of the blast furnace low titania slag under the condition of no external agitation is confirmed to be of a first order. The controlling step is the diffusion of S in slag. The measures to accelerate the rate of desulfurization are approached.

关键词: low titania slag , null , null , null

CARBIDE PRECIPITATION AND BAINITE TRANSFORMATION IN Fe-C-Si ALLOY

R.L. Zuo , L. Fang and P. D. Ding(Department of Metallurgy and Materials Engineering , Chongqing University , Chongqing 630044 , China)

金属学报(英文版)

The upper bainite formed isothermally at 480℃ C in Fe-0. 38C-1. 73Si alloy was studied by using transmission electron microscopy (TEM). It was found by electron diffraction and crystallographic analysis that bainitic carbide precipitation originated from bainitic ferrite (BF), in which the initial supersaturation did not come up to the average carbon content of the alloy. It is suggested that bainite transformation in steel should be a coupled process of transformation dislocation movement controlled by carbon diffusion in austenite.

关键词: : bainite , null , null , null

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