Formation of the structure and properties of cast details with ak7чalloy using complex treatment

Authors

  • R. O. Frolov Department of «Composite materials, chemistry and technologies», Zaporizhzhia National Technical University, 64, Zhukovskyi str., 69063, Zaporizhzhia, Ukraine https://orcid.org/0000-0001-9967-0220
  • I. P. Volchok Department of «Composite materials, chemistry and technologies», Zaporizhzhia National Technical University, 64, Zhukovskyi str., 69063, Zaporizhzhia, Ukraine https://orcid.org/0000-0003-1580-0556
  • O. A. Mitiaiev Department of «Composite materials, chemistry and technologies», Zaporizhzhia National Technical University, 64, Zhukovskyi str., 69063, Zaporizhzhia, Ukraine https://orcid.org/0000-0001-9034-1359
  • V. V. Lukinov JSC «Motor Sich», 15, Motorostroiteley str., 69063, Zaporizhzhia, Ukraine

DOI:

https://doi.org/10.30838/J.PMHTM.2413.230419.611.295

Keywords:

aluminum, intermetallic phases, structure, plasticity, modifying treatment, charge

Abstract

Purpose.Formation of a separate non-dendritic structure and increasingof mechanical properties of “disk” -type parts from  AK7ch  alloy. Methodology. Material  for  this  study  were  alloy  AK7ch.  Part  of  the  charge  was  replaced  by  fine-crystalline remelt. Experimental melting in three different technological variants was carried out in a gas furnace. The study of the structure was carried  out  on  transverse  sections  of “disk”-type  parts, the  control  of  mechanical  properties  was  carried  out  on  samples  made according to GOST 1497-84 after heat treatment according to T5 mode. Findings.Studies have shown that the integrated application of  modifying  treatment  and  melted  crystalline  melt  can  significantly  improve  the  mechanical  properties  of  secondary  aluminum alloys. Originality. For  the  first  time  in  the  production  conditions,  the  technology  of  complex  processing  of  the  melt  with  a modifying complex and fine-crystalline remelting was applied. Practical value. The results obtained can improve the quality of cast parts.

Author Biographies

R. O. Frolov, Department of «Composite materials, chemistry and technologies», Zaporizhzhia National Technical University, 64, Zhukovskyi str., 69063, Zaporizhzhia

Postgraduate Student

I. P. Volchok, Department of «Composite materials, chemistry and technologies», Zaporizhzhia National Technical University, 64, Zhukovskyi str., 69063, Zaporizhzhia

Dr. Sc. (Tech.), Prof.

O. A. Mitiaiev, Department of «Composite materials, chemistry and technologies», Zaporizhzhia National Technical University, 64, Zhukovskyi str., 69063, Zaporizhzhia

Dr. Sc. (Tech.), Prof.

References

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Published

2019-04-23

Issue

No. 2 (2019): Metal Science and Heat Treatment of Metals

Section

Technical science

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