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首页> 外文期刊>Journal of Materials Engineering and Performance >A Study on Deformation Behavior of 304L Stainless Steel During and After Plate Rolling at Elevated Temperatures
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A Study on Deformation Behavior of 304L Stainless Steel During and After Plate Rolling at Elevated Temperatures

机译：304L不锈钢在升高温度下轧制和后轧制后变形行为的研究

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摘要

In this work, microstructural evolutions and mechanical properties of AISI 304L stainless steel were studied after rolling operations at elevated temperatures. Rolling experiments were conducted under warm and hot rolling conditions in the range of 600-1000 A degrees C employing different reductions. Then, the developed microstructures and the mechanical properties of the steel were evaluated by means of uniaxial tensile testing, metallographic observations, and x-ray diffraction method. Besides, two-dimensional finite element analysis coupled with artificial neural network modeling was developed to assess thermo-mechanical behavior of the steel during and after rolling. The results show that inhomogeneities in strain and temperature distributions are reduced under warm rolling conditions. Static recrystallization can be operative under hot rolling conditions and relatively low reduction, i.e., reduction of 25%. However, for the case of higher reductions, the rate of recrystallization decreases considerably owing to severe temperature drop in the plate being rolled. Furthermore, the rolled plates show negative strain rate sensitivity while this phenomenon is affected by the rolling temperature.
机译：本文研究了AISI 304L不锈钢在高温轧制后的组织演变和力学性能。轧制试验在600-1000 A摄氏度的温轧和热轧条件下进行，采用不同的压下率。然后，通过单轴拉伸试验、金相观察和x射线衍射法对钢的发达组织和力学性能进行了评估。此外，还开发了二维有限元分析与人工神经网络建模相结合的方法来评估钢材在轧制过程中和轧制后的热机械行为。结果表明，在温轧条件下，应变和温度分布的不均匀性降低。静态再结晶可在热轧条件和相对较低的压下率（即25%的压下率）下进行。然而，在压下率较高的情况下，由于轧制钢板的严重温度下降，再结晶速率显著降低。此外，轧制板材表现出负应变率敏感性，而这一现象受轧制温度的影响。

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