Metal Science and Heat Treatment

, Volume 16, Issue 10, pp 866–869 | Cite as

Effect of alloying of the seam metal on the properties of weldments in invar alloys

  • K. A. Yushchenko
  • N. I. Kakhovskii
  • T. M. Starushchenko
Precision Alloys

Conclusions

  1. 1.

    Alloys of iron with 36–42% Ni have good weldability and high physicomechanical properties at 4.2–293°K.

     
  2. 2.

    To increase the resistance of weld seams to hot cracking and porosities it is necessary to use filler wire alloyed with as much as 3.5% Mn, 1.5% Ti, and 4% Mo. Higher strength of welds is achieved by combined alloying with these elements and chromium (up to 5%).

     
  3. 3.

    An increase of the coefficient of thermal expansion to 4–5·10−6 deg−1 leads to thermal stresses near 5.0 kg/mm2 during thermal cycling in the range of 4.2–293°K.

     
  4. 4.

    In welded joints of Invar and stainless steel of the 18/8 type stresses around 40.0 kg/mm2 occur during thermal cycling, which amounts to 0.5σ0.2 of the weld metal at 4.2°K.

     

Keywords

Porosity Weldability Chromium Stainless Steel Thermal Expansion 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

Literature cited

  1. 1.
    G. Rundell and A. Nherenberg, Welding J.,45, 4, 159 (1966).Google Scholar
  2. 2.
    G. S. Kuz'min and V. P. Dobrynin, “Characteristics of welding nickel to low-carbon and stainless steels”, Avtomaticheskaya Svarka, 9, 42 (1970).Google Scholar
  3. 3.
    V. I. Makhnenko et al., “Behavior of butt joints in tubing of different metals with continuous thermal cycling”, Avtomaticheskaya Svarka, 6, 35 (1971).Google Scholar
  4. 4.
    D. V. Vainberg, Stress Concentrations in Plates around Holes and Fillets [in Russian], Tekhnika, Kiev (1969), pp. 29, 172.Google Scholar
  5. 5.
    T. Cottlieb and C. Shira, Welding J.44, 3, 116–123 (1965).Google Scholar

Copyright information

© Plenum Publishing Corporation 1975

Authors and Affiliations

  • K. A. Yushchenko
  • N. I. Kakhovskii
  • T. M. Starushchenko

There are no affiliations available

Personalised recommendations