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首页> 外文期刊>Journal of materials in civil engineering >Stress-Strain Model for Ferritic Stainless Steels
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Stress-Strain Model for Ferritic Stainless Steels

机译：铁素体不锈钢的应力应变模型

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Compared with austenitic or duplex stainless steels, ferritic stainless steels have no or very low nickel content. Therefore, their cost is lower and more stable than those of austenitic and duplex stainless steels, providing a more viable alternative for structural applications. They are also less affected by gradual yielding than their austenitic and duplex counterparts and thus retain elastic stiffness at relatively high stress levels more like their ordinary carbon steel counterparts. Existing stress-strain models, however, are less accurate in predicting stress-strain curves for ferritic stainless steels than for austenitic and duplex stainless steels. The paper collects a wide range of tensile test data for ferritic stainless steel coupons cut either from steel sheets or cold-formed hollow sections. Using the three basic Ramberg-Osgood parameters, stress-strain models are developed for both flat and corner ferritic stainless steels. The accuracy of the proposed models is verified by comparing their predictions with experimental stress-strain curves.
机译：与奥氏体或双相不锈钢相比，铁素体不锈钢不含或非常低的镍含量。因此，与奥氏体和双相不锈钢相比，它们的成本更低，更稳定，为结构应用提供了更可行的选择。与奥氏体和双相钢相比，它们受屈服的影响也较小，因此，它们在较高的应力水平下仍能保持弹性刚度，更像普通碳钢。然而，现有的应力-应变模型在预测铁素体不锈钢的应力-应变曲线时不如奥氏体和双相不锈钢精确。该论文收集了从钢板或冷成型空心型材切割得到的铁素体不锈钢试样的各种拉伸试验数据。使用三个基本的Ramberg-Osgood参数，为扁平和角铁素体不锈钢开发了应力应变模型。通过将其预测值与实验应力-应变曲线进行比较，可以验证所提出模型的准确性。

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