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Electron theory study on mechanism of action of cobalt in Fe-Co-Cr based high-alloy steel

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Chinese Science Bulletin

Abstract

The valence electron structure of martensite in FeCoCr based high-alloy steel is calculated using the empirical electron theory of solids and molecules (EET). The results show that the incorporation of cobalt leads to a rise in n A from 0.3835 to 0.4684, which enhances the bonding forces between atoms in α-Fe matrix. Meanwhile, the incorporation of Co changes the valence electron structure of segregated structure units formed by C and other alloying elements, and increases n A for the segregated units containing C-Me significantly, resulting in changing the precipitation behavior of the secondary phases during tempering and strengthening the resistance to tempering.

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Authors and Affiliations

  1. Department of Mechanical Engineering, Tsinghua University, 100084, Beijing, China

    Peijie Li, Yuhua Xiong, Shuxun Liu & Daben Zeng

Authors
  1. Peijie Li
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  2. Yuhua Xiong
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  3. Shuxun Liu
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  4. Daben Zeng
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Cite this article

Li, P., Xiong, Y., Liu, S. et al. Electron theory study on mechanism of action of cobalt in Fe-Co-Cr based high-alloy steel. Chin. Sci. Bull. 48, 208–210 (2003). https://doi.org/10.1007/BF02942239

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  • DOI: https://doi.org/10.1007/BF02942239

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