Metal Science and Heat Treatment

, Volume 20, Issue 3, pp 200–203 | Cite as

Effect of deformation of austenite during HTMT on the stability of high-carbon martensite during low-temperature tempering

  • M. L. Bernshtein
  • L. M. Kaputkina
  • S. D. Prokoshkin
  • S. V. Dobatkin
Theory
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Conclusions

  1. 1.

    Hot plastic deformation of austenite affects the kinetics of biphase decomposition of martensite during low-temperature tempering. The lattice constant of temper martensite depends on the extent of biphase decomposition of martensite.

     
  2. 2.

    As a rule, HTMT accelerates self-tempering during quenching and has different effects on biphase decomposition of martensite during subsequent low-temperature tempering, depending on the hot deformation conditions of austenite. When an imperfect polygonization structure with high density of free dislocations is formed during deformation of austenite, the biphase decomposition of martensite is accelerated during low-temperature tempering; after HTMT producing a perfected regular structure of polygonal subboundaries in austenite (and inherited by martensite), biphase decomposition of martensite is slowed down.

     

Keywords

Austenite Martensite Plastic Deformation Lattice Constant Deformation Condition 

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Literature cited

  1. 1.
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  2. 2.
    M. L. Bernshtein et al., "Effect of cold working on tempering of martensite," Fiz. Met. Metalloved.,34, No. 3, 535 (1972).Google Scholar
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    G. V. Kurdyumov and L. I. Lysak, "Use of single crystals to study the structure of temper martensite," Zh. Tekh. Fiz.,16, No. 11, 1307 (1946).Google Scholar
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    M. A. Shtremel' and L. M. Kaputkina, "X-ray structural analysis of polycrystalline carbon martensite," Fiz. Met. Metalloved.,32, No. 5, 991 (1971).Google Scholar
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    L. M. Kaputkina, M. L. Bernhtein, and M. A. Shtremel' "Condition of martensite after high-temperature thermomechanical treatment," Fiz. Khim. Obrab. Mater., No. 1, 71 (1974).Google Scholar

Copyright information

© Plenum Publishing Corporation 1978

Authors and Affiliations

  • M. L. Bernshtein
  • L. M. Kaputkina
  • S. D. Prokoshkin
  • S. V. Dobatkin

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