Microstructure and Texture Evolution Law of Ti-IF Steel for Extra Deep Drawing during Batch Annealing Process

Abstract:

The variation of microstructure of Ti-IF steel of extra deep drawing grade, which having a 83%cold-rolled deformation under simulated batch annealing process at temperature ranging from 480°C to 750°C, was studied by using optical microscopy, X-ray diffraction (XRD) and metallographic micro-hardness tester. The evolution of texture during the recrystallization process was analyzed by Orientation Density Function (ODF). The results show that, the recrystallization temperature of experimental steel is 620-630°C, and the recrystallization process can be accomplished within 1h at660°C. Four major textures after cold rolling are observed as follows,{001}<110>, {111}<110>, {111}<112> and {112}<110>, respectively. At the early stage of recrystallization annealing, texture evolves from {111} toγ-{111}, which is quite beneficial to achieve high deep drawing performance,the texture {001}<110> and {112}<110> change marginally. as the annealing temperature rises up to 720°C, texture {001}<110> and {112}<110> change into fiber textureγ-{111}. After annealing,{111}<112> and {111}<110> textures become the two main types.

• Periodical: Advanced Materials Research (Volume 873)
• Pages: 42-47
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.873.42
• Online since: December 2013
• Authors: Zheng Bing Meng*, Lang He, Guang Liang Wu, Xin Bin Liu, Chao Yang Zhou
• Keywords: Batch Annealing, Orientation Distribution Function, Recrystallization, Texture, Ti-IF Steel for Extra Deep Drawing

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