Microstructure refinement in Cu-Fe alloy using high pressure torsion

A. Lukyanov, A. Churakova, A. Filatov, E. Levin, R. Valiev, D. Gunderov, E. Antipov

Research output

4 Citations (Scopus)

Abstract

The effect of high pressure torsion (HPT) on the microstructure evolution of Cu-Fe 36% wt alloy has been studied. The initial Cu-Fe alloy has a dendritic structure, the length of dendrites is up to 100 gm. As a result of HPT (20 anvil rotations at 400 °C) the refinement of a- Fe dendrites occurs, and a microstructure with Fe inclusions with a size from 0.1 to 5 gm uniformly distributed in the copper matrix forms. Subsequent annealing at 700 °C for 1 hour results in some coarsening of a-Fe particles, as compared to the state after HPT. However, the dendritic structure typical of the cast alloy does not recover; it remains dispersed with a size of a-Fe particles less than 20 gm. As a result of HPT the alloy microhardness increased from 1800 to 4000 MPa. The subsequent annealing at T 700 °C decreased the microhardness to 2700 MPa, but this value is 1.5 times higher than that in the initial as-cast state.

Original languageEnglish
Article number012102
JournalIOP Conference Series: Materials Science and Engineering
Volume63
Issue number1
DOIs
Publication statusPublished - 1 Jan 2014
Externally publishedYes
Event6th International Conference on Nanomaterials by Severe Plastic Deformation, NanoSPD 2014 - Metz
Duration: 30 Jun 20144 Jul 2014

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Torsional stress
Microstructure
Microhardness
Annealing
Coarsening
Copper

Scopus subject areas

  • Materials Science(all)
  • Engineering(all)

Cite this

Lukyanov, A. ; Churakova, A. ; Filatov, A. ; Levin, E. ; Valiev, R. ; Gunderov, D. ; Antipov, E. / Microstructure refinement in Cu-Fe alloy using high pressure torsion. In: IOP Conference Series: Materials Science and Engineering. 2014 ; Vol. 63, No. 1.
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Microstructure refinement in Cu-Fe alloy using high pressure torsion. / Lukyanov, A.; Churakova, A.; Filatov, A.; Levin, E.; Valiev, R.; Gunderov, D.; Antipov, E.

In: IOP Conference Series: Materials Science and Engineering, Vol. 63, No. 1, 012102, 01.01.2014.

Research output

TY - JOUR

T1 - Microstructure refinement in Cu-Fe alloy using high pressure torsion

AU - Lukyanov, A.

AU - Churakova, A.

AU - Filatov, A.

AU - Levin, E.

AU - Valiev, R.

AU - Gunderov, D.

AU - Antipov, E.

PY - 2014/1/1

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AB - The effect of high pressure torsion (HPT) on the microstructure evolution of Cu-Fe 36% wt alloy has been studied. The initial Cu-Fe alloy has a dendritic structure, the length of dendrites is up to 100 gm. As a result of HPT (20 anvil rotations at 400 °C) the refinement of a- Fe dendrites occurs, and a microstructure with Fe inclusions with a size from 0.1 to 5 gm uniformly distributed in the copper matrix forms. Subsequent annealing at 700 °C for 1 hour results in some coarsening of a-Fe particles, as compared to the state after HPT. However, the dendritic structure typical of the cast alloy does not recover; it remains dispersed with a size of a-Fe particles less than 20 gm. As a result of HPT the alloy microhardness increased from 1800 to 4000 MPa. The subsequent annealing at T 700 °C decreased the microhardness to 2700 MPa, but this value is 1.5 times higher than that in the initial as-cast state.

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