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Study on stable and meta-stable carbides in a high speed steel for rollers during tempering processes

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Abstract

A high speed steel (HSS) was studied for rollers in this work. The steel was quenched at 1150°C and tempered at 520°C. The phase structures of the steel were determined by X-ray diffraction (XRD), and the hardness of specimens was measured. The volume fraction of carbides was counted by Image-Pro Plus software. The typical microstructures were observed by field emission scanning electron microscope (FESEM). Stable and meta-stable carbides were deduced by removing the existing phases one by one in the Fe-C equilibrium calculation. It is found that the precipitated carbides are bulk-like MC, long stripe-like M2C, fishbone-like M6C, and daisy-like M7C3 during the tempering process. The stable carbides are MC and M6C, but the meta-stable ones are M2C, M7C3, and M3C.

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Authors and Affiliations

  1. State Key Laboratory of Meta-stable Materials Science and Technology, Yanshan University, Qinhuangdao, 066004, China

    Jing Guo, Hong-wei Qu, Li-gang Liu, Yan-liang Sun & Qing-xiang Yang

  2. School of Material Science and Engineering, University of Science and Technology Beijing, Beijing, 100083, China

    Yue Zhang

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  1. Jing Guo
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  2. Hong-wei Qu
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  3. Li-gang Liu
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  4. Yan-liang Sun
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  5. Yue Zhang
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  6. Qing-xiang Yang
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Correspondence to Qing-xiang Yang.

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Guo, J., Qu, Hw., Liu, Lg. et al. Study on stable and meta-stable carbides in a high speed steel for rollers during tempering processes. Int J Miner Metall Mater 20, 146–151 (2013). https://doi.org/10.1007/s12613-013-0706-7

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  • DOI: https://doi.org/10.1007/s12613-013-0706-7

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