Metal Science and Heat Treatment

, Volume 16, Issue 12, pp 1060–1062 | Cite as

Structure of αγ phase in alloys of the YuNDK and YuNDKT type

  • R. P. Leshchinskaya
Technical Information


  1. 1.

    In alloys YuNDK and YuNDKT cooled from the two-phase region at rates of 50–100 deg/min the αγ has a martensitic structure. This confirms the assumption of a diffusionless mechanism of the γ→αγ transformation. At cooling rates considerably lower than 50–100 deg/min and during isothermal holding in a temperature range near the lower limit of the two-phase region the diffusional γ→α transformation is possible.

  2. 2.

    In alloy YuNDK24 the rate of the diffusional transformation is highest at 740°C; in this case it is completed in 3 h. In alloys YuNDK35T5 and YuNDK40T7 only the partial diffusional γ→α transformation occurs. The rate of the transformation is highest at 780°C.



Cool Rate Lower Limit Isothermal Holding Martensitic Structure Diffusional Transformation 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

Literature cited

  1. 1.
    E. Planchard, R. Meyer, and G. Bronner, Z. Angew. Phys.,17, 3, 175–176 (1964).Google Scholar
  2. 2.
    M. D. Perkas and V. M. Kordonskii, High-Strength Maraging Steels [in Russian], Metallurgiya, Moscow (1970), p. 15.Google Scholar

Copyright information

© Plenum Publishing Corporation 1975

Authors and Affiliations

  • R. P. Leshchinskaya

There are no affiliations available

Personalised recommendations