4.6 Article

Effect of Cold-Rolling Directions on Recrystallization Texture Evolution of Pure Iron

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MATERIALS
卷 15, 期 9, 页码 -

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MDPI
DOI: 10.3390/ma15093083

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texture; recrystallization; cold-rolling direction; pure iron

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The influence of cold-rolling directions on the recrystallization texture evolution of pure iron was investigated. The results showed that different cold-rolling directions led to different texture morphologies, and new types of recrystallization textures were discovered.
The influence of cold-rolling directions on the recrystallization texture evolution of pure iron was examined. As-received pure iron sheets were cold-rolled under two different conditions (specimens A and B). Specimen A was cold-rolled in the vertical direction against the cold-rolling direction of the as-received sheet. Specimen B was cold-rolled in the vertical direction against the cold-rolling direction of the as-received sheet, and then in the cold-rolling direction of the as-received sheet. Cold-rolled specimens were heated to each desired temperature before being quenched in water to room temperature (298 +/- 2 K). Both cold-rolled specimens showed the development of gamma-fiber and {100} orientation. Additionally, gamma-fiber formed comparatively more in cold-rolled specimen A, while alpha-fiber developed comparatively more in cold-rolled specimen B. Strain distribution in cold-rolled specimen A was presumably inhomogeneous, whereas that in cold-rolled specimen B was rather uniform at the macro-scale. The formation of gamma-fiber was confirmed in annealed specimen A. In annealed specimen B, however, the recrystallization texture tended to be random, and the formation of alpha-fiber was observed. Furthermore, the formation of Goss orientation in both annealed specimens was established. Recrystallized ferrite grains with Goss orientation nucleated in high strain regions of cold-rolled specimen. These findings show that by devising the cold-rolling direction, it is possible to discover new types of recrystallization textures.

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