Regeneration of the initial structure in white alloy pig irons by their heat treatment

Authors

  • I. F. Tkachenko
  • V. I. Miroshnichenko State higher educational establishment "Priazovskyi state technical university", Mariupol, Ukraine https://orcid.org/0000-0002-5956-7867
  • V. G. Gavrilova State higher educational establishment "Priazovskyi state technical university", Mariupol, Ukraine

DOI:

https://doi.org/10.31498/2225-6733.40.2020.216034

Keywords:

white alloy iron, plate-like alloy cementite crystals, «regenerative» heat treatment, homogeneous in size and spacial distribution sole alloy cementite crystals, nano-sized cementite particles

Abstract

The regime parameters providing the improvements of initial cast structure in a white alloy quasi-eutectic pig iron are specified for the applied heat treatment which is based on the early defined principles of microstructure «regeneration» in hetero-phase materials with polymorphic matrixes. Extremely undesirable, typical original microstructure of the iron comprising big, plate-like, «ledeburite» cementite crystals along with coarse-grained colonies of pearlite-like structures was observed. Formation of dispersed, homogeneous in size and spacial distribution sole alloy cementite crystals instead of the «ledeburite» one, within fine grained matrix containing nano-sized cementite particles is shown as a result of the optimal «regenerative» heat treatment employment. Conserving the original iron hardness on the level 60-63 HRC was observed that confirms stability of its phase composition despite the obtained structure`s morphology changes. Unified features of the structure «regeneration» processes in hetero-phase metallic materials of various chemical composition are outlined that provides reliable obtaining high mechanical performance of the materials

Author Biographies

I. F. Tkachenko

Доктор технічних наук, професор

V. I. Miroshnichenko, State higher educational establishment "Priazovskyi state technical university", Mariupol

Кандидат технічних наук, старший викладач

V. G. Gavrilova, State higher educational establishment "Priazovskyi state technical university", Mariupol

Кандидат технічних наук, доцент

References

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How to Cite

Tkachenko, I. F., Miroshnichenko, V. I., & Gavrilova, V. G. (2020). Regeneration of the initial structure in white alloy pig irons by their heat treatment. Reporter of the Priazovskyi State Technical University. Section: Technical Sciences, (40), 19–24. https://doi.org/10.31498/2225-6733.40.2020.216034

Issue

No. 40 (2020): Reporter of the Priazovskyi State Technical University. Section: Technical sciences

Section

132 Materials Science

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