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首页> 外文期刊>ISIJ international >Crystallographic Texture Based Analysis of Fe3O4/α-Fe2O3 Scale Formed on a Hot-rolled Microalloyed Steel
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Crystallographic Texture Based Analysis of Fe3O4/α-Fe2O3 Scale Formed on a Hot-rolled Microalloyed Steel

机译：Fe 3 O 4 / α -Fe 2 O 3 在热轧微合金钢上形成氧化皮

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Oxide scale formed on the strip surface during hot rolling has posed a serious obstacle to ensure a defect-free surface of steel products in an ecologically friendly way. Recently, an influential idea is that the tertiary oxide scale with a tailored texture can be expected to enhance surface quality and tribolgoical properties during particular lubrication. In this study, texture evolutions of magnetite (Fe_(3)O_(4)) and hematite (α -Fe_(2)O_(3)) in deformed oxide layers formed on a hot-rolled microalloyed steel were investigated by electron back-scattering diffraction (EBSD). Fe_(3)O_(4) develops a strong θ fibre parallel to the oxide growth, and α -Fe_(2)O_(3) has a dominant {0001} texture component. This could be explained by surface energy minimisation during oxides growth and transformation between two oxides, which can also be affected by propagation of cracks along high angle grain boundaries in Fe_(3)O_(4). Our data further demonstrate that a high thickness reduction (>28%) can reduce α -Fe_(2)O_(3) wedging through Fe_(3)O_(4) cracks, and tailoring Fe_(3)O_(4) texture to {111} components can prevent the α -Fe_(2)O_(3) growth titling 54.76° from the crystal direction of Fe_(3)O_(4). As such, these means can dramatically alleviate disturbance from ‘red scale’ (α -Fe_(2)O_(3)) during high-temperature steel processing.
机译：热轧过程中在带材表面形成的氧化皮构成了严重的障碍，无法以生态友好的方式确保钢材的无缺陷表面。最近，一个有影响力的想法是，可以预期具有特定织构的三氧化二锡垢会在特定润滑期间提高表面质量和摩擦学性能。在这项研究中，通过热轧微合金钢形成的变形氧化物层中的磁铁矿（Fe_（3）O_（4））和赤铁矿（iα-Fe_（2）O_（3））的织构演变得到了研究。电子背散射衍射（EBSD）。 Fe_（3）O_（4）形成与氧化物生长平行的结实的θ纤维，并且α-Fe_（2）O_（3）具有主要的{0001}纹理成分。这可以用氧化物生长和两种氧化物之间的转变过程中的表面能最小化来解释，这也可能受裂纹沿Fe_（3）O_（4）的高角度晶界扩展的影响。我们的数据进一步表明，高厚度减小（> 28％）可以减少通过Fe_（3）O_（4）裂纹楔入和修整Fe_（3）O_（4）的α-Fe_（2）O_（3） } {111}组分的织构可以防止α-Fe_（2）O_（3）的生长从Fe_（3）O_（4）的晶体方向倾斜54.76°。因此，这些方法可以极大地减轻高温钢加工过程中“红皮”（α-Fe_（2）O_（3））的干扰。

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