Improved mechanical properties secondary alloys ak7ч and a356.2

Authors

  • I. P. Volchok Department of «Composite, powder materials and technologies», Zaporizhzhia National Technical University, Zhukovskyi St., 64, Zaporizhzhia, Ukraine, Ukraine
  • A. A. Mityayev Department of «Composite, powder materials and technologies», Zaporizhzhia National Technical University, Zhukovskyi St., 64, Zaporizhzhia, Ukraine, Ukraine
  • R. A. Frolov Department of «Composite, powder materials and technologies», Zaporizhzhia National Technical University, Zhukovskyi St., 64, Zaporizhzhia, Ukraine, Ukraine
  • K. N. Loza JSC «Motor Sich», Motorostroiteley St., 15, Zaporizhzhia, Ukraine, Ukraine
  • V. V. Klochihin JSC «Motor Sich», Motorostroiteley St., 15, Zaporizhzhia, Ukraine, Ukraine
  • V. V. Lukinov JSC «Motor Sich», Motorostroiteley St., 15, Zaporizhzhia, Ukraine, Ukraine

Keywords:

aluminum, intermetallic phases, structure, mechanical properties, modifying treatment

Abstract

Optimization of technology processing of the secondary aluminum cast-alloys AK7ч and A356.2. Study of the effect of an inoculation treatment on the structure and properties of alloys containing different concentrations of impurities. Methodology. As a material for this study of the alloy AK7ч and its analogue A356.2 and the returns of its own production was chosen. The  alloys  from different  composition  of  the  initial  charge  was  carried  out  according  to  the factory  and  experimental technology.  Control  of  mechanical  properties  was  performed  on  samples  prepared  in  accordance  with  GOST  1497-84  after  heat treatment at T6 mode. Control of the microstructure was performed on microsection after treatment surface by aquatic solution of acid 0,5 % HF + 0,5 % HNO3 + 1,5 % HCl during 10s. Findings. The ability to improve on the mechanical properties of secondary aluminum alloys modifying treatment has been shown. Originality. Influence of the amount of modifying complex on the structure and  properties  of  secondary  aluminum  alloy  AK7ч has been show. Practical  value. Recommendations  on  the use  of  modifying complex MK-1 for processing secondary AK7ч and A356.2 alloys was offered.

Author Biographies

I. P. Volchok, Department of «Composite, powder materials and technologies», Zaporizhzhia National Technical University, Zhukovskyi St., 64, Zaporizhzhia, Ukraine

Dr. Sc. (Tech.), Prof.

A. A. Mityayev, Department of «Composite, powder materials and technologies», Zaporizhzhia National Technical University, Zhukovskyi St., 64, Zaporizhzhia, Ukraine

Dr. Sc. (Tech.), Prof.

R. A. Frolov, Department of «Composite, powder materials and technologies», Zaporizhzhia National Technical University, Zhukovskyi St., 64, Zaporizhzhia, Ukraine

postgraduate

K. N. Loza, JSC «Motor Sich», Motorostroiteley St., 15, Zaporizhzhia, Ukraine

Ph. D.

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Published

2016-03-22

Issue

Section

Proceedings in memory of Starodubov