Metal Science and Heat Treatment

, Volume 13, Issue 8, pp 675–677 | Cite as

Partial coffficients of thermal expansion of high-speed steels

  • V. A. Landa
  • E. M. Stepnov
  • I. K. Kupalova
Tool Steels and Alloys


  1. 1.

    We determined the lattice constants of M6C and MC and the α and γ phases in high-speed steels R6M3 and R14F4 during heating and cooling at 20–1200°C. The lattice constant of MC varies linearly at these temperatures. The lattice constant of M6C has two temperature ranges in which the coefficient increases linearly with temperature: 20–800 and 900–1200°C, with increasingly linear expansion. The lattice constant of M6C at 20°C is the same in the annealed and quenched steels.

  2. 2.

    The partial thermal expansion coefficients were calculated at 20–1200°C for M6C and MC and the α and γ phases. A relationship was found between the type of solid solution and the partial expansion coefficient of M6C.



Solid Solution Thermal Expansion Lattice Constant Expansion Coefficient Thermal Expansion Coefficient 
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Literature cited

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Copyright information

© Consultants Bureau 1972

Authors and Affiliations

  • V. A. Landa
  • E. M. Stepnov
  • I. K. Kupalova

There are no affiliations available

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