Role of Hematite Formation on Blister Generation during High Temperature Oxidation of Steel
スポンサーリンク
概要
- 論文の詳細を見る
Blistering is a phenomenon in which oxide scale swells during oxidation at high temperatures. Blistered scale causes surface defects in steel products during hot-rolling processes. The present study investigated the effect of oxygen and the scale layer structure on blister initiation when steel is oxidized at high temperatures, and the mechanism of blister formation is discussed. The following conclusions are drawn. Blisters are not formed when the scale is a wustite mono-layer, but start to nucleate when the scale layer structure changes from the wustite mono-layer to a three-layered scale comprised of hematite (Fe2O3), magnetite (Fe3O4), and wustite (FeO). The compressive stress in the oxide scale that is applied due to the oxide scale growth is largely released when scale layer structure changes from the wustite mono-layer to the three-layered scale. This result suggests that the compressive stress is not the main factor for blister initiation. It is deduced that the pressure of the CO, CO2, and N2 gases generated at the scale/steel interface is the main factor for blister formation. The hematite layer on the top surface of scale presumably acts as a barrier of gas permeability.
著者
-
Ushioda Kohsaku
Technical Dev. Bureau Nippon Steel Corp.
-
MAEDA Muneyuki
Oita works, Nippon Steel Corporation
-
Tanei Hiroshi
Steel Rolling R&d Div. Environment & Process Technology Center Technical Development Bureau Nippon Steel Corporation
-
Kondo Yasumitsu
Steel Rolling R&d Div. Environment & Process Technology Center Technical Development Bureau Nippon Steel Corporation
-
Kondo Yasumitsu
Steel Rolling R&D div., Process Technology Center, Technical Development Bureau, Nippon Steel Corporation
-
Tanei Hiroshi
Steel Rolling R&D div., Process Technology Center, Technical Development Bureau, Nippon Steel Corporation
関連論文
- 銅含有鋼の高温酸化時におけるスケール/地鉄界面への濃化銅量に及ぼす雰囲気条件の影響-3
- Cu含有鋼の高温酸化時におけるスケール/地鉄界面への濃化Cu量に及ぼす雰囲気条件の影響-2
- Cu含有鋼の高温酸化時におけるスケール/地鉄界面への濃化Cu量に及ぼす雰囲気条件の影響
- 温度非定常条件での低炭素鋼の高温酸化挙動
- 低酸素濃度雰囲気での低炭素鋼の高温酸化
- 低炭素鋼の高温酸化に及ぼす水蒸気の影響
- Deep Drawability of Electro-deposited Pure Iron Having an Extremely Sharp //ND Texture
- The Effect of S and Mn on the High-temperature Oxidation and Scale Spallation Behavior of Low-carbon Steels
- Analysis of Flange Wrinkle in Square-shell Deep Drawing of Anisotropic Sheet
- Evolution of Dislocation Structure and Fatigue Crack Behavior in Fe-Si Alloys during Cyclic Bending Test
- Cold-rolling and Recrystallization Texture Formation in Electro-deposited Pure lron with a Sharp and Homoqeneous γ-fiber
- Comparison of the Dislocation Density in Martensitic Steels Evaluated by Some X-ray Diffraction Methods
- Role of TiAl_3 Fine Precipitate in Nucleation of the Primary Al Dendrite Phase during Solidification in Hot-Dip Zn-11%Al-3%Mg-0.2%Si Coated Steel Sheet
- Blistering Behavior during Oxide Scale Formation on Steel Surface
- The Increase in a Brittle-to-ductile Transition Temperature in Fe-Al Single Crystals
- Behaviour of Cu at High Temperature Oxidation of Cu containing steel
- Effects of Initial Scale Structure on Transformation Behavior of Wustite
- Effect of Nitrogen on Blister Growth Process during High Temperature Oxidation of Steel
- Effect of Atmospheric Conditions on Copper Behaviour during High Temperature Oxidation of a Steel Containing Copper
- Behaviour of Copper during High Temperature Oxidation of Steel Containing Copper
- Influence of Si Addition to the Coating Bath on the Growth of the Al-Fe Alloy Layer in Hot-dip Zn-Al-Mg Alloy-coated Steel Sheets
- Role of Hematite Formation on Blister Generation during High Temperature Oxidation of Steel
- Effect of Carbide Size Distribution on the Impact Toughness of Tempered Martensitic Steels with Two Different Prior Austenite Grain Sizes Evaluated by Instrumented Charpy Test
- Behavior of High-Temperature Embrittlement and Its Mechaism in Heat-Affected Zone of Low-Carbon Alloy Steels