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Effects of Ausforming Procedure and Following Annealing Treatment on Microstructural Characteristics in Cobalt

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Acta Metallurgica Sinica (English Letters) Aims and scope

Abstract

The effects of ausforming procedure and subsequent annealing treatments on microstructures of cobalt (Co) samples are investigated by electron channeling contrast and electron backscatter diffraction techniques. Results show that the ausformed Co samples consist of coarsen blocky laths (single ε phase) with the irregular morphology and the ultra-fine acicular laths (dual phase: γ and ε) with the slender and rectangular morphologies. As compared to the slight reduction sample, the much denser acicular laths are observed in the heavily ausformed sample. In addition, recrystallization behavior and annealing-induced γ → ε transformation have occurred in ausformed Co samples during the annealing treatment.

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Acknowledgements

This work was supported by the National Natural Science Foundation of China (Nos. 51501026 and 51401039), the Natural Science Foundation of Chongqing (CSTC2014jcyjA50017), the Scientific and Technological Research Program of Chongqing Municipal Education Commission (No. KJ1500923), and the Australian Research Council.

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Authors and Affiliations

  1. School of Materials Science and Engineering, Chongqing University of Technology, Chongqing, 400054, China

    Jian Tu, Kun-Feng Zhou, Zhi-Ming Zhou & Can Huang

  2. Chongqing Municipal Key Laboratory of Institutions of Higher Education for Mould Technology, Chongqing University of Technology, Chongqing, 400054, China

    Jian Tu & Zhi-Ming Zhou

  3. Centre for Future Materials, University of Southern Queensland, Springfield, QLD, 4360, Australia

    Zhi-Gang Chen

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  1. Jian Tu
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  2. Kun-Feng Zhou
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Correspondence to Zhi-Ming Zhou.

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Tu, J., Zhou, KF., Zhou, ZM. et al. Effects of Ausforming Procedure and Following Annealing Treatment on Microstructural Characteristics in Cobalt. Acta Metall. Sin. (Engl. Lett.) 31, 415–422 (2018). https://doi.org/10.1007/s40195-017-0615-2

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  • DOI: https://doi.org/10.1007/s40195-017-0615-2

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