MICROSTRUCTURE TRANSFORMATION IN A CAST Cu-Fe ALLOY AT HIGH PRESSURE TORSION DEFORMATION

被引：0

作者：

Lukyanov, A. ^{[1
]}

Churakova, A. ^{[2
]}

Gunderov, D. ^{[2
,3
]}

Filatov, A. ^{[4
]}

Antipov, E. ^{[4
]}

Sitdikov, V. ^{[2
,5
]}

Ganeev, A. ^{[2
]}

Valiev, R. ^{[2
,5
]}

Pushin, V. ^{[1
]}

机构：

[1] Russian Acad Sci, Inst Met Phys, Ural Div, 18 S Kovalevskaya Str, Ekaterinburg 620041, Russia

[2] Ufa State Aviat Tech Univ, K Marx St 12, Ufa 450008, Russia

[3] Kazan Fed Univ, Kremlyovskay St 18, Kazan 450008, Russia

[4] Lomonosov Moscow State Univ, GSP 1, Moscow 119991, Russia

[5] St Petersburg State Univ, Univ Pr 28, St Petersburg 198504, Russia

来源：

REVIEWS ON ADVANCED MATERIALS SCIENCE | 2016年 / 45卷 / 1-2期

基金：

俄罗斯科学基金会;

关键词：

SUPERSATURATED SOLID-SOLUTIONS; MECHANICAL-PROPERTIES; BEHAVIOR; SUPERPLASTICITY; NANOSTRUCTURE; REFINEMENT; METALS; STEEL;

D O I：

暂无

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

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 mu m. As a result of HPT (20 anvil revolutions at 400 degrees C) a nanostructural state is formed. The average size of the Cu and alpha-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 degrees C for 1 hour results in some coarsening of alpha-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 alpha-Fe particles less than 20 mu m. As a result of HPT the alloy microhardness increased from 1800 to 4000 MPa. The subsequent annealing at T = 700 degrees C decreased the microhardness to 2700 MPa, but this value is 1.5 times higher than that in the initial as cast state.

引用

页码：20 / 27

页数：8

共 36 条

[1]

Antipov EV, 2006, LIGHT MET, P403

[2] The formation of supersaturated solid solutions in Fe-Cu alloys deformed by high-pressure torsion [J].

Bachmaier, A. ;

Kerber, M. ;

Setman, D. ;

Pippan, R. .

ACTA MATERIALIA, 2012, 60 (03) :860-871

[3]

Cizek J, 2003, J METASTAB NANOCRYST, V17, P37

[4]

Filatov A, 2008, PHYS CHEM SURFACES P, V44, P664

[5] Mechanical properties and martensitic transformations in nanocrystalline Ti49.4Ni50.6 alloy produced by high-pressure torsion [J].

Gunderov, D. ;

Lukyanov, A. ;

Prokofiev, E. ;

Kilmametov, A. ;

Pushin, V. ;

Valiev, R. .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2009, 503 (1-2) :75-77

[6] Evolution of microstructure, macrotexture and mechanical properties of commercially pure Ti during ECAP-conform processing and drawing [J].

Gunderov, D. V. ;

Polyakov, A. V. ;

Semenova, I. P. ;

Raab, G. I. ;

Churakova, A. A. ;

Gimaltdinova, E. I. ;

Sabirov, I. ;

Segurado, J. ;

Sitdikov, V. D. ;

Alexandrov, I. V. ;

Enikeev, N. A. ;

Valiev, R. Z. .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2013, 562 :128-136

[7] High-pressure torsion applied to nickel single crystals [J].

Hafok, Martin ;

Pippan, Reinhard .

PHILOSOPHICAL MAGAZINE, 2008, 88 (12) :1857-1877

[8] Characteristics of superplasticity in an ultrafine-grained aluminum alloy processed by ECA pressing [J].

Islamgaliev, RK ;

Yunusova, NF ;

Valiev, RZ ;

Tsenev, NK ;

Perevezentsev, VN ;

Langdon, TG .

SCRIPTA MATERIALIA, 2003, 49 (05) :467-472

[9] Recovery of HPT-processed iron studied by orientation imaging microscopy [J].

Ivanisenko, Julia ;

Minkow, Alexander ;

Valiev, Ruslan Z. ;

Fecht, Hans-J. .

RECRYSTALLIZATION AND GRAIN GROWTH III, PTS 1 AND 2, 2007, 558-559 :891-+

[10] Annealing behaviour of nanostructured carbon steel produced by severe plastic deformation [J].

Ivanisenko, Y ;

Wunderlich, RK ;

Valiev, RZ ;

Fecht, HJ .

SCRIPTA MATERIALIA, 2003, 49 (10) :947-952

← 1 2 3 4 →