Advertisement

Effect of Grain Size on Mechanical Properties of Nickel-Free High Nitrogen Austenitic Stainless Steel

  • Hua-bing Li
  • Zhou-hua Jiang
  • Zu-rui Zhang
  • Yan Yang
Article

Abstract

The fine grained structures of nickel-free high nitrogen austenitic stainless steels had been obtained by means of cold rolling and subsequent annealing. The relationship between microstructure and mechanical properties and gain size of nickel-free high nitrogen austenitic stainless steels was examined. High strength and good ductility of the steel were found. In the grain size range, the HallPetch dependency for yield stress, tensile strength, and hardness was valid for grain size ranges for the nickel-free high nitrogen austenitic stainless steel. In the present study, the ductility of cold rolled nickel-free high nitrogen austenitic stainless steel decreased with annealing time when the grain size was refined. The fracture surfaces of the tensile specimens in the grain size range were covered with dimples as usually seen in a ductile fracture mode.

Key words

grain refinement strengthening nitrogen nickel-free high nitrogen austenitic stainless steel Hall-Petch equation 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. [1]
    Stein G, Huchlenbroich I. Manufacturing and Application of High Nitrogen Steels [J]. Materials and Manufacturing Processes, 2004, 19(1): 7.CrossRefGoogle Scholar
  2. [2]
    Rashev T. Development of Laboratory and Industrial Installations for One Stage Production of HNS [J]. Materials and Manufacturing Processes, 2004, 19(1): 31.CrossRefGoogle Scholar
  3. [3]
    Katada Y, Sagara M, Kobayashi Y, et al. Fabrication of High Strength High Nitrogen Stainless Steel With Excellent Corrosion Resistance and Its Mechanical Properties [J]. Materials and Manufacturing Processes, 2004, 19(1): 19.CrossRefGoogle Scholar
  4. [4]
    Uggowitzer P J, Magdowski R, Speidel M O. Nickel Free High Nitrogen Austenitic Steels [J]. ISIJ International, 1996, 36(7): 901.CrossRefGoogle Scholar
  5. [5]
    Schino D A, Kenny J M. Development of High Nitrogen, Low Nickel, 18%Cr Austenitic Stainless Steel [J]. Journal of Materials Science, 2000, 35(19): 4803.CrossRefGoogle Scholar
  6. [6]
    Schino D A, Kenny J M. Grain Refinement Strengthening of a Micro-Crystalline High Nitrogen Austenitic Stainless Steel [J]. Materials Letters, 2003, 57(12): 1830.CrossRefGoogle Scholar
  7. [7]
    JIANG Zhou-hua, LI Hua-bing, SHEN Ming-hui. Manufacture of Nickel Free High Nitrogen Austenitic Stainless Steels [A]. DONG Han eds. Proceedings of International Conference on High Nitrogen Steels 2006 [C]. Beijing: Metallurgical Industry Pess, 2006. 372.Google Scholar
  8. [8]
    Petch J N. The Cleavage Strength of Polycrystals [J]. Journal of the Iron and Steel Institute, 1953, 5: 25.Google Scholar
  9. [9]
    Speidel M O. Nanograin Size, High-Nitrogen Austenitic Stainless Steels [J]. Z Metallkd, 2003, 94(6): 719.CrossRefGoogle Scholar

Copyright information

© China Iron and Steel Research Institute Group 2009

Authors and Affiliations

  • Hua-bing Li
    • 1
  • Zhou-hua Jiang
    • 1
  • Zu-rui Zhang
    • 1
  • Yan Yang
    • 1
  1. 1.School of Materials and MetallurgyNortheastern UniversityShenyang, LiaoningChina

Personalised recommendations