17% Crステンレス鋼のリジングに関する研究(<小特集>X線材料強度小特集)

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Ferritic stainless steel sheets, containing 17% chromium, tend to from ridges when they are elongated along the rolling direction. This kind of small ridges are formed parallel to the rolling direction, and are called ridging or roping. Since ridging occurs even in deep drawing and injures the external appearance of the products, it is regarded as one of the most troublesome flaws of the stainless steel sheets. The purpose of the present study was to calculate the behavior of plastic deformation by the finite element method and to find the most probable model of the combination of orientations of elongated region of grains and the matrix. The experimental results are as follows: (1) The hills at the top surface and the valleys at the bottom surface of ridging corresponded each other, just the same as the result reported by Takechi et al. (2) The mojor texture components showed no change after about 20% elongation compared with the original one, although after 20% elongation marked ridging was observed. (3) The simulation of plastic deformation was carried out by the use of finite element method on the model which contained elongated grains of (001) [110] orientation surrounded by the matrix of (554) [22<5>^^^] orientation. The calculation showed marked ridging when the specimen of the above described model was stretched along the rolling direction, but a little in the 45℃ to the rolling direction, and less along the transverse direction.
社団法人日本材料学会の論文
1985-06-15

17% Crステンレス鋼のリジングに関する研究(<小特集>X線材料強度小特集)

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