Characteristics of oxide scale formed on ferritic stainless steels in simulated reheating atmosphere

Cheng, Xiawei; Jiang, Zhengyi; Wei, Dongbin; Zhao, Jingwei; Monaghan, Brian J; Longbottom, Raymond J.; Jiang, Laizhu

doi:10.1016/j.surfcoat.2014.09.019

Cited by 64 publications

(46 citation statements)

References 39 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The sticking of bare metal to roll surfaces was strongly dependent on the high temperature tensile strength and the oxidation resistance of the stainless steel [1]. It is more difficult for oxide scale to be generated on the surface of stainless steels than that on the surface of carbon steels during high rolling temperature [2,3]. Sticking refers to a phenomenon occurring in hot rolling process in which fragments of a rolled material are detached and get stuck onto a work roll surface, deteriorating not only the surface quality of the product, but also the rolls, which will result in shorter intervals of roll replacement or grinding [4,5].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Investigation of oxide scale on ferritic stainless steel B445J1M and its tribological effect in hot rolling

Cheng

Jiang

Zhao

et al. 2015

Wear

Self Cite

View full text Add to dashboard Cite

Severe sticking occurs in the hot rolling of ferritic stainless steel B445J1M. The characteristics of the oxide scale on the steel in hot rolling are associated with this phenomenon. The tensile failure of the oxide scale formed on the steel B445J1M was investigated by using a Gleeble 3500 thermo-mechanical simulator over temperature range from 1000 to 1150°C in humid air. Two passes hot rolling were carried out on a 2-high Hille 100 experimental rolling mill. The results show that the temperature is a significant factor for the formed thickness of the oxide scale and its failure in tensile stress. On the specimen before hot rolling, irregular spinels are extruded from the surface of a thin oxide scale with Cr2O3 as its main component, which are hard and brittle at lower rolling temperature. Disciplines Engineering | Science and Technology Studies Publication DetailsCheng, X., Jiang, Z., Zhao, J., Wei, D., Hao, L., Peng, J., Luo, M., Ma, L., Luo, S. & Jiang, L. (2015 AbstractSevere sticking occurs in the hot rolling of ferritic stainless steel B445J1M. The characteristics of the oxide scale on the steel in hot rolling are associated with this phenomenon. The tensile failure of the oxide scale formed on the steel B445J1M was investigated by using a Gleeble 3500 thermo-mechanical simulator over temperature range from 1000 to 1150 °C in humid air. Two passes hot rolling were carried out on a 2-high Hille 100 experimental rolling mill. The results show that the temperature is a significant factor for the formed thickness of the oxide scale and its failure in tensile stress. On the specimen before hot rolling, irregular spinels are extruded from the surface of a thin oxide scale with Cr 2 O 3 as its main component, which are hard and brittle at lower rolling temperature.

show abstract

Section: Introductionmentioning

confidence: 99%

“…1 shows the surface of high speed steel (HSS) roll after the sticking occurs during rolling stainless steel grade B445J1M. The B445J1M steel has high oxidation resistance in the reheating environment [2]. The HSS rolls shown in Fig.…”

Section: Introductionmentioning

confidence: 99%

Investigation of oxide scale on ferritic stainless steel B445J1M and its tribological effect in hot rolling

Cheng

Jiang

Zhao

et al. 2015

Wear

Self Cite

View full text Add to dashboard Cite

show abstract

“…Therefore, the oxide layer of B445J1M can be considered as a single layer of Cr 2 O 3 . Additionally, the separation can be clearly observed between the oxide scale and the substrate, which means the oxide scale of B445J1M poorly attached to the substrate [19]. Figure 4 shows the thickness of the B445J1M oxide scale vs time, from which can be obtained that its thickness reaches at approximately 4.6 m after oxidizing 2 hours.…”

Section: Characterization Of Oxide Scalementioning

confidence: 96%

Experimental and Numerical Study on the Effect of ZDDP Films on Sticking During Hot Rolling of Ferritic Stainless Steel Strip

Líu

Jiang

Wei

et al. 2016

Metall Mater Trans A

Self Cite

View full text Add to dashboard Cite

The aim of this study is to investigate the effect of zinc dialkyl dithio phosphate (ZDDP) films on sticking during hot rolling of a ferritic stainless steel strip. The surface characterization and crack propagation of the oxide scale are very important for understanding the mechanism of the sticking. The high-temperature oxidation of one typical ferritic stainless was conducted at 1373 K (1100 °C) for understanding its microstructure and surface morphology. Hot-rolling tests of a ferritic stainless steel strip show that no obvious cracks among the oxide scale were observed with the application of ZDDP. A finite element method model was constructed with taking into consideration different crack size ratios among the oxide scale, surface profile, and ZDDP films. The simulation results show that the width of the crack tends to be reduced with the introduction of ZDDP films, which is beneficial for improving sticking. Abstract:The aim of this study is to investigate the effect of zinc dialkyl dithio phosphate (ZDDP) films on sticking during hot rolling of a ferritic stainless steel strip. The surface characterization and crack propagation of the oxide scale are very important for understanding the mechanism of the sticking. The high-temperature oxidation of one typical ferritic stainless was conducted at 1373 K (1100 ℃) for understanding its microstructure and surface morphology.Hot-rolling tests of a ferritic stainless steel strip show that no obvious cracks among the oxide scale were observed with the application of ZDDP. An finite element method (FEM) model was constructed with taking into consideration different crack size ratios among the oxide scale, surface profile, and ZDDP films. The simulation results show that the width of the crack tends to be reduced with the introduction of ZDDP films, which is beneficial for improving sticking.

show abstract

“…Therefore, studying the influence of water vapor on Chromia-forming alloys oxidation at high temperature has great importance. Some works have been done to study the influence of water vapor on oxidation [1][2][3][4][5][6], and several mechanisms have been proposed to explain the influence of water vapor on oxidation, such as Fuji and Meussner [2] proposed a dissociation mechanism, and suggested that hydrogen appears to play an important role in the oxidation process as an oxygen carrier between the separated inner and outer scale layers. Shen Jianian [3] suggested that breakaway oxidation happened in the water vapor containing atmosphere is the result of formation of microcracks and microchannels during oxidation.…”

Section: Introductionmentioning

confidence: 99%

Residual Stress Analysis on Oxide Layers Obtained by High Temperature Oxidation of Chromia-Forming Alloys

Xiao

Prudhomme

et al. 2016

Residual Stresses 2016

View full text Add to dashboard Cite

Abstract:The oxide layers formed during high temperature oxidation of metallic alloys depend on experimental conditions (oxidation gas composition, gas pressure, temperature, duration etc…) and often with complex structure or multilayer structure. Residual stress can be generated not only dues to oxide growth at high temperature (growth stress) but also during cooling of layer/metallic alloy system after oxidation (thermal stress). The determination of the level and the distribution of the residual stresses in oxide layers are very important to determine the influence of oxidation condition in one hand and to estimate the mechanical component's durability at high temperature in the other hand. Two Chromia-forming alloys have been studied: a nickel based Inconel 600 alloy (Ni-17%Cr-8%Fe-1%Mn) and a ferritic AISI 430 steel (Fe-17%Cr-1%Mn). Oxidation test has been carried out at different temperatures (from 600°C to 900°C) for various durations (from 2 h to 96 h) under different absolute humilities (from 0% to 19%). After oxidation of Inconel 600, the oxide layers are composed essentially by an external NiO layer and by an internal spinel NiCr 2 O 4 layer. While the AISI 430 steel forms an external spinel Mn 1.5 Cr 1.5 O 4 layer and an internal Cr 2 O 3 layer. The residual stresses (RS) have been analyzed by X-Ray Diffraction (XRD) method in each of oxide layers after oxidation tests. In oxide layers, the RS are compressive and the RS levels are more important in internal layer than those in external layer. Overall, the compressive RS in oxide layers increase with oxidation temperature, oxidation duration and absolute humidity. IntroductionAt high temperature, almost all metals are not thermodynamically stable in air or in atmosphere where oxygen exists, and a solid oxide scale will form on the surface. Oxidation of Chromia-forming alloys has drawn lots of attention in recent years, for their good oxidation resistance and low cost. It is true that lots of studies have been done to study the oxidation behavior of Chromia-forming alloy in dry air, but humidity exists in all stages of oxidation in reality. Therefore, studying the influence of water vapor on Chromia-forming alloys oxidation at high temperature has great importance. Some works have been done to study the influence of water vapor on oxidation [1-6], and several mechanisms have been proposed to explain the influence of water vapor on oxidation, such as Fuji and Meussner [2] proposed a dissociation mechanism, and suggested that hydrogen appears to play an important role in the oxidation process as an oxygen carrier between the separated inner and outer scale layers. Shen Jianian [3] suggested that breakaway oxidation happened in the water vapor containing atmosphere is the result of formation of microcracks and microchannels during oxidation. H. Asteman [4,5] observed the evaporation of Chromia hydroxide. According to J. Ehlers the entry of molecular H 2 O into the oxide scale was the main process leading to breakaway oxidation [6]. Obviously, the mechanis...

show abstract

Characteristics of oxide scale formed on ferritic stainless steels in simulated reheating atmosphere

Cited by 64 publications

References 39 publications

Investigation of oxide scale on ferritic stainless steel B445J1M and its tribological effect in hot rolling

Investigation of oxide scale on ferritic stainless steel B445J1M and its tribological effect in hot rolling

Experimental and Numerical Study on the Effect of ZDDP Films on Sticking During Hot Rolling of Ferritic Stainless Steel Strip

Residual Stress Analysis on Oxide Layers Obtained by High Temperature Oxidation of Chromia-Forming Alloys

Contact Info

Product

Resources

About