6 research outputs found

    In-situ observation of texture changes during phase transformations in ultra-low-carbon steel

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    Texture changes during the alpha(bcc)-gamma(fcc) phase transformation in ultra-low-carbon (ULC) steel were investigated in situ by neutron diffraction, making use of a vacuum furnace. The initial texture is a typical bee rolling texture. Upon heating above 500 degrees C, it recrystallizes, and above 900 degrees C, it transforms into an fee texture with (111) fee pole figures resembling (110) bee and (110) fee resembling (111) bee. Upon cooling, the reverse transformation produces a texture that is close to the initial one, documenting a texture memory. Modeling the texture changes with the Kurdjumov-Sachs (KS), Nishiyama-Wassermann (NW), and Bain relationships reproduces the correct texture patterns but considerably weaker texture strengths, indicating that in the experimental case, variant selection occurs during both the forward and reverse transformations
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