吉林大学学报(工学版) ›› 2018, Vol. 48 ›› Issue (4): 1161-1168.doi: 10.13229/j.cnki.jdxbgxb20161280

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Cr surface alloying of 45# steel by high-current pulsed electron beam treatment

GUAN Qing-feng, DONG Shu-heng, ZHENG Huan-huan, LI Chen, ZHANG Cong-lin, LV-Peng   

  1. School of Material Science and Engineering, Jiangsu University, Zhenjiang 212013,China
  • Received:2016-12-25 Online:2018-07-01 Published:2018-07-01

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Abstract: The chromium element is alloyed on 45# steel by High-Current Pulse Electron Beam (HCPEB) with pre-coating to obtain high quality alloyed layers. The microstructure and properties of the alloying layer are studied by XRD, OM, SEM, TEM and multi-purpose microcomputer electrochemistry analyzer. Analysis results show that, the formation an alloyed layer with the depth of about 4~9 μm on the surface is observed. The solid solution and diffusion of Cr element occurs on the surface of the substrate. C atoms generated by the dissolution of the cementite combine with the chromium to form a small amount of nano-grained carbide Cr23C6. The surface micro-hardness and the corrosion resistance of 20 steel after HCPEB alloying are remarkably improved compared with the original sample.

Key words: metallic material, high current pulsed electron beam(HCPEB), surface alloyed by electronic beam, micro-hardness, corrosion resistance

CLC Number: 

  • TG178
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