Fe-1Cr-0.2Si钢的高温氧化行为

doi:10.11896/cldb.19060169

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Abstract To understand the high temperature oxidation behavior of ternary system Fe-1Cr-0.2Si steel,the high temperature oxidation test of Fe-1Cr-0.2Si steel was carried out by tube furnace at 900 ℃, 1 000 ℃ and 1 100 ℃ in air for 30 min. The results show that the scale develop comprises an outermost magnetite layer, and an inner mixed oxides layer of wüstite, FeCr₂O₄ and Fe₂SiO₄ at 900 ℃. It has been found that oxide scales consist of two distinguishable zones at 1 000 ℃ and 1 100 ℃. Outer oxide scale formed at these temperatures comprises three layers, an outer hematite (Fe₂O₃) layer, an intermediate magnetite (Fe₃O₄) layer, and a thick inner wüstite (FeO) layer. Inner oxide layer is composed of FeCr₂O₄ and Si oxide. The scale on the Fe-1Cr-0.2Si steel at different temperature therefore, consists of two layers: the outer layer which grows outward by cation diffusion and is composed mainly of Fe oxide, and the inner layer which grows inward by O₂ penetration and which contains a considerable amount of Cr and Si. The thickness of wüstite layer increases with increasing temperature from 900 ℃ to 1 100 ℃, while the thickness proportion of Cr and Si rich region decreases. But the accumulation quantity increases with the increasing temperature. There are no Si and Cr bimetal compound oxides formed, while the microstructure delamination isn’t observed in the Si and Cr oxides.

Key words： high temperature oxidation oxide scale Cr oxide Si oxide

Published: 24 July 2020

CLC number:

TG172.3

Fund:This work was financially supported by the National Natural Science Foundation of China (51301111), Natural Science Foundation of Liaoning Province of China (2019-KF-05-04), State Key Laboratory of Rolling and Automation Foundation (2017RALKFKT007).

About author:: Bin Sunreceived Ph.D. degree in Northeast University in 2011. Her research interest is high temperature of steel. She is a vice dean of Mechanical Engineering College in Shenyang University. She is an associate professor and graduate supervisor. She was selected for “Prominent Talent of Shenyang” and “Liaoning 100-1000-10000 Talent Programme”. She was a evaluation expert in Natural Science Foundation of Liaoning. The project of “oxide scale controlling technology of conti-nuous casting and rolling process” got the first prize Metallurgical Science and Technology. She entered the post-doctoral research station of joint trai-ning of Northeast University and Handan steel joint stock company. The project of “development of pickling free steel” got the second prize Shanxi province Science Progress Award. She has published more than 20 journal papers as the first author, applied 7 national invention patents.

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	SUN Bin
	HAO Mingxin
	YOU Hongguang
	WANG Hao
	CAO Guangming

Cite this article:

SUN Bin,HAO Mingxin,YOU Hongguang, et al. High Temperature Oxidation Behavior of Fe-1Cr-0.2Si Steel[J]. Materials Reports, 2020, 34(16): 16131-16135.

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http://www.mater-rep.com/EN/10.11896/cldb.19060169 OR http://www.mater-rep.com/EN/Y2020/V34/I16/16131

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