Metal Science and Heat Treatment

, Volume 22, Issue 3, pp 167–171 | Cite as

Nitriding steels of the low-carbon martensitic type

  • Yu. M. Lakhtin
  • G. A. Ioffe
  • É. S. Tsyrlin
  • L. I. Kogan
  • R. I. Éntin
Chemicothermal Treatment

Conclusions

  1. 1.

    With a certain combination of alloying elements low-carbon martensitic steels can be nitrided at 575–600°. After a short holding time (6–12 h) a nonbrittle diffusion coating 0.35–0.55 mm deep is obtained, with surface hardness HV5=1000–1050.

     
  2. 2.

    After nitriding, the low-carbon martensitic steels developed (08Kh3G2MYu and 08Kh3N2MYu) have practically the same mechanical properties in tension and bending as steels 38Kh2MYuA and 30Kh3VA but surpass them in surface hardness, effective case depth, and fracture toughness in the temperature range of +20 to −60°.

     

Keywords

Mechanical Property Nitrided Fracture Toughness Holding Time Surface Hardness 

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Literature cited

  1. 1.
    L. I. Kogan and R. I. Éntin, "Kinetics of the polymorphic transformation of alloyed iron,", in: Problems of Metal Science and Physics of Metals [in Russian], No. 2, Metallurgizdat, Moscow (1951), p. 204.Google Scholar
  2. 2.
    L. M. Kleiner, L. I. Kogan, and R. I. Éntin, "Properties of low-carbon alloyed martensite," Fiz. Met. Metalloved.,33, No. 4, 824 (1972).Google Scholar
  3. 3.
    L. M. Kleiner et al., Low-Carbon Structural Steels with a Structure of Martensite [in Russian], Bulletin No. 4 (720), Chermetinformatsiya, Moscow (1974), p. 3.Google Scholar
  4. 4.
    R. I. Éntin et al., "Properties of low-carbon steels in relation to the characteristics of the transformation of austenite," in: Problems of Metal Science and Physics of Metals [in Russian], No. 4, Metallurgiya, Moscow (1977) p. 99.Google Scholar
  5. 5.
    Yu. M. Lakhtin, Physical Basis of the Process of Nitriding [in Russian], Mashgiz, Moscow (1948).Google Scholar
  6. 6.
    Yu. M. Lakhtin and Ya. D. Kogan, Nitriding of Steel [in Russian], Mashinostroenie, Moscow (1976).Google Scholar

Copyright information

© Plenum Publishing Corporation 1980

Authors and Affiliations

  • Yu. M. Lakhtin
  • G. A. Ioffe
  • É. S. Tsyrlin
  • L. I. Kogan
  • R. I. Éntin

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