Mechanism of solid-state reaction between Fe-based alloy and oxide

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• 作者：Kyung-Ho KIMHiroyuki SHIBATAShin-ya KITAMURA
• 会议时间：2013-06-01
• 关键词：oxide inclusion ; solid-state reaction ; diffusion
• 作者单位：Kyung-Ho KIM(Graduate School of Engineering,Tohoku University,Japan)Hiroyuki SHIBATA,Shin-ya KITAMURA(Institute of Multidisciplinary Research for Advanced Materials,Tohoku University,Japan)
• 母体文献：第五届宝钢学术年会论文集
• 会议名称：第五届宝钢学术年会
• 会议地点：上海
• 主办单位：中国金属学会
• 语种：chi

摘要

Non-metallic inclusions are considered to play an important role on the quality of steel products.Effect of non-metallic inclusions on the quality of steel products is determined by its state in the final products after various thermal and mechanical treatments as well as its state during refining and casting.In this study,solid state reaction between Fe-based alloy and oxide was investigated by using a diffusion couple in order to clarify the mechanism of reaction at the interface.Diffusion couple consisted of the steel and oxide,those are in equilibrium at steelmaking temperature,and it was heated at a temperature above 50 K higher than the liquidus temperature of oxide phase to contact oxide with solid steel.After that the diffusion couple was heated at 1 473 K for various time and quenched.A cross section of interface between the steel and the oxide was analyzed using an EPMA and SEM- EDS.As results,the diffusion of elements between the steel and the oxide,phase transformation of the oxide,and formation of particles in the steel were observed near the interface.The mechanism of the reaction between the solid steel and the oxide is discussed.