Microstructure transformation in a cast Cu-Fe alloy at high pressure torsion deformation

A. Lukyanov, A. Churakova, D. Gunderov, A. Filatov, E. Antipov, V. Sitdikov, A. Ganeev, R. Valiev, V. Pushin

Результат исследований: Научные публикации в периодических изданияхстатьянаучнаярецензирование

Выдержка

The effect of high pressure torsion (HPT) on the microstructure 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 μm. As a result of HPT (20 anvil revolutions at 400 °C) a nanostructural state is formed. The average size of the Cu and α-Fe grains is 60 and 35 nm correspondingly. The volume fraction of the Fe phase reduces from the initial 37% down to 15% after HPT. The concentration of iron dissolved in the copper lattice reaches 20%. The subsequent annealing at 700 °C for 1 hour results in some coarsening of α-Fe particles, as compared to the state after HPT. However, the typical dendritic structure of the cast alloy does not recover; it remains dispersed with the size of α-Fe particles less than 20 μm. 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.

Язык оригиналаанглийский
Страницы (с-по)20-27
Число страниц8
ЖурналReviews on Advanced Materials Science
Том45
Номер выпуска1-2
СостояниеОпубликовано - 1 янв 2016

Отпечаток

Torsional stress
torsion
casts
microstructure
Microstructure
Microhardness
microhardness
Annealing
annealing
cast alloys
Coarsening
dendrites
anvils
Copper
Volume fraction
Iron
iron
copper

Предметные области Scopus

  • Материаловедение (все)
  • Физика конденсатов

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abstract = "The effect of high pressure torsion (HPT) on the microstructure 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 μm. As a result of HPT (20 anvil revolutions at 400 °C) a nanostructural state is formed. The average size of the Cu and α-Fe grains is 60 and 35 nm correspondingly. The volume fraction of the Fe phase reduces from the initial 37{\%} down to 15{\%} after HPT. The concentration of iron dissolved in the copper lattice reaches 20{\%}. The subsequent annealing at 700 °C for 1 hour results in some coarsening of α-Fe particles, as compared to the state after HPT. However, the typical dendritic structure of the cast alloy does not recover; it remains dispersed with the size of α-Fe particles less than 20 μm. 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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Microstructure transformation in a cast Cu-Fe alloy at high pressure torsion deformation. / Lukyanov, A.; Churakova, A.; Gunderov, D.; Filatov, A.; Antipov, E.; Sitdikov, V.; Ganeev, A.; Valiev, R.; Pushin, V.

В: Reviews on Advanced Materials Science, Том 45, № 1-2, 01.01.2016, стр. 20-27.

Результат исследований: Научные публикации в периодических изданияхстатьянаучнаярецензирование

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AU - Lukyanov, A.

AU - Churakova, A.

AU - Gunderov, D.

AU - Filatov, A.

AU - Antipov, E.

AU - Sitdikov, V.

AU - Ganeev, A.

AU - Valiev, R.

AU - Pushin, V.

PY - 2016/1/1

Y1 - 2016/1/1

N2 - The effect of high pressure torsion (HPT) on the microstructure 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 μm. As a result of HPT (20 anvil revolutions at 400 °C) a nanostructural state is formed. The average size of the Cu and α-Fe grains is 60 and 35 nm correspondingly. The volume fraction of the Fe phase reduces from the initial 37% down to 15% after HPT. The concentration of iron dissolved in the copper lattice reaches 20%. The subsequent annealing at 700 °C for 1 hour results in some coarsening of α-Fe particles, as compared to the state after HPT. However, the typical dendritic structure of the cast alloy does not recover; it remains dispersed with the size of α-Fe particles less than 20 μm. 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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