Tensile Properties and Deformation-Induced Martensitic Transformation at Cryogenic Temperatures in Fe-Cr-Ni-Mn-N Alloys

  • D. F. Li
  • C. G. Fan
  • Y. Y. Li
  • H. M. Cheng
Part of the Advances in Cryogenic Engineering Materials book series (ACRE, volume 42)


The tensile properties and changes in microstructures during tensile deformation in Fe-Cr-Ni-Mn-N alloys with a variation of C and N contents have been investigated over the temperature range of 293–4.2 K. It was found that with decreasing temperature the deformation-induced martensitic transformation started at 173 K in the process of γ→ε→α′; the amount of α′ martensite formed with maximum uniform strain was greater at 77 K than at 173 or 4.2 K. For the formation of α′ martensite a critical strain was required, and the amount of α′ martensite increased with increasing deformation strain. With the increase in the contents of C and N, the critical strain and the tendency for the increase in the amount of α′ martensite with strain decreased. The results show that both C and N can lead to some increase in the yield and ultimate strengths and a decrease in the elongation, while the deformation-induced martensitic transformation is strongly restrained by the increase in C or N content.


Tensile Property Martensitic Transformation Ultimate Strength Austenitic Stainless Steel Austenitic Steel 
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Copyright information

© Springer Science+Business Media New York 1996

Authors and Affiliations

  • D. F. Li
    • 1
  • C. G. Fan
    • 1
  • Y. Y. Li
    • 1
  • H. M. Cheng
    • 1
  1. 1.Institute of Metal ResearchAcademia SinicaShenyangP. R. China

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