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Preparation of nanocrystalline 430L stainless steel by HEBM and SPS

  • Hong-wei Ni
  • Hang He
  • Guang-qiang Li
  • Jing Liu
Article

Abstract

Preparation of nanocrystalline 430L stainless steel by both high-energy ball milling and spark plasma sintering technique has been investigated. The results have shown that the hardness can be improved markedly with an increase in sintering temperature and holding time. The lower the apparent porosity of nanocrystalline 430L stainless steel, the higher is the Vickers-hardness. The tensile strength reached a maximum value of 713 MPa when the sample was sintered at 1 173 K for 10 min, and then it evidently decreased with an increase in sintering temperature and holding time because of the growth of crystalline grain.

Key words

ferritic stainless steel nanocrystalline spark plasma sintering 

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Copyright information

© China Iron and Steel Research Institute Group 2008

Authors and Affiliations

  • Hong-wei Ni
    • 1
  • Hang He
    • 2
  • Guang-qiang Li
    • 1
  • Jing Liu
    • 1
  1. 1.Key Laboratory for Ferrous Metallurgy and Resources Utilization of Ministry of EducationWuhan University of Science and TechnologyWuhan, HubeiChina
  2. 2.Xiangtan Iron and Steel Group Co LtdXiangtan, HunanChina

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