Effect of nitrogen content on precipitation during isothermal annealing of P/M high nitrogen austenitic stainless steels

被引：8
|
作者：
Romu, J [1 ]
Hänninen, H [1 ]
机构：
[1] Helsinki Univ Technol, Lab Engn Mat, FIN-02015 HUT, Finland
来源：
HIGH NITROGEN STEELS '98 | 1999年 / 318-3卷
关键词：
nitrogen alloying; precipitation; intermetallic phases; chromium nitrides; mechanical properties; corrosion resistance;
D O I：
10.4028/www.scientific.net/MSF.318-320.673
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The aim of the study is to determine the effect of nitrogen content on precipitation reactions in nitrogen alloyed austenitic stainless steels during isothermal annealing up to 500 h at 450 degrees C and up to 72 h at 750 degrees C. The studied steels were PIM austenitic stainless steels with the nominal composition of 24Cr-22Ni-7.3Mo-3.5Mn-0,3...0,9N. The studied steels were manufactured by HIPing (Hot Isostatic Pressing) from gas atomized powders. Nitrogen content of the steels was varied by nitrogen alloying of the atomized melt and by further solid state nitridihg of the gas atomized powders in a fluidized bed furnace when nitrogen contents exceeding nitrogen solubility in the liquid state were needed. The effect of nitrogen content on precipitation was studied with TEM as well as by tensile testing, Charpy-V impact testing and localized corrosion testing (pitting and crevice corrosion). Precipitating phases in the studied steels were either intermetallic phases (sigma and Laves) and/or chromium nitrides (Cr2N) depending on the nitrogen content of the steel.
引用
收藏
页码：673 / 680
页数：8
相关论文
共 50 条
  • [31] Mechanical Behaviour of Aged High Nitrogen Austenitic Stainless Steels
    N. C. Santhi Srinivas
    V. V. Kutumbarao
    Transactions of the Indian Institute of Metals, 2011, 64 : 331 - 337
  • [32] Mechanical Behaviour of Aged High Nitrogen Austenitic Stainless Steels
    Srinivas, N. C. Santhi
    Kutumbarao, V. V.
    TRANSACTIONS OF THE INDIAN INSTITUTE OF METALS, 2011, 64 (4-5) : 331 - 337
  • [33] Progress on welding of high nitrogen alloyed austenitic stainless steels
    Holmberg, B.
    Welding Research Abroad, 2004, 50 (11): : 1 - 7
  • [34] P/M processing routes for high nitrogen martensitic stainless steels
    Toro, A
    Alonso-Falleiros, N
    Rodriguez, D
    Ambrozio, F
    Liberati, JF
    Tschiptschin, AP
    TRANSACTIONS OF THE INDIAN INSTITUTE OF METALS, 2002, 55 (05) : 481 - 487
  • [35] Effect of nitrogen alloying on elastic coefficients of austenitic stainless steels
    Tervo, J.
    Tarasenko, A.
    Hänninen, H.
    Materials Science Forum, 1999, 318 : 41 - 46
  • [36] Effect of alloying nitrogen on crevice corrosion of austenitic stainless steels
    Azuma, S
    Miyuki, H
    Kudo, T
    ISIJ INTERNATIONAL, 1996, 36 (07) : 793 - 798
  • [37] Effect of nitrogen alloying on elastic coefficients of austenitic stainless steels
    Tervo, J
    Tarasenko, A
    Hänninen, H
    HIGH NITROGEN STEELS '98, 1999, 318-3 : 41 - 46
  • [38] Formation of nitrogen bubbles during the solidification of 16-18% Cr high nitrogen austenitic stainless steels
    Ridolfi, MR
    Tassa, O
    INTERMETALLICS, 2003, 11 (11-12) : 1335 - 1338
  • [39] Sintering optimisation and solution annealing of high nitrogen nickel free austenitic stainless steels prepared by PIM
    Cui, D. W.
    Qu, X. H.
    Guo, P.
    Li, K.
    POWDER METALLURGY, 2010, 53 (01) : 91 - 95
  • [40] Effect of Tensile Deformation on Microstructure and Corrosion Resistance of High Nitrogen Austenitic Stainless Steels
    Zheng Chun
    Liu Jiabin
    Jiang Laizhu
    Yang Cheng
    Jiang Meixue
    ACTA METALLURGICA SINICA, 2022, 58 (02) : 193 - 205
12345