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

[11] The mechanism of formation of nanostructure and dissolution of cementite in a pearlitic steel during high pressure torsion [J].

Ivanisenko, Y ;

Lojkowski, W ;

Valiev, RZ ;

Fecht, HJ .

ACTA MATERIALIA, 2003, 51 (18) :5555-5570

[12] Nanocrystalline Fe-1 wt. %C compacts obtained by high pressure torsion of mechanically alloyed powder [J].

Ivanisenko, Y ;

Krasilnikov, N ;

Banhart, F ;

Kolesnikov, D ;

Valiev, R ;

Lojkowski, W ;

Fecht, HJ .

ANNALES DE CHIMIE-SCIENCE DES MATERIAUX, 2002, 27 (03) :45-53

[13]

Ivanisenko Yu., NANOMATERIALS SEVERE

[14] Grain refinement in nanostructured Al-Mg alloys subjected to high pressure torsion [J].

Liu, Manping ;

Roven, Hans J. ;

Liu, Xintao ;

Murashkin, Maxim ;

Valiev, Ruslan Z. ;

Ungar, Tamas ;

Balogh, Levente .

JOURNAL OF MATERIALS SCIENCE, 2010, 45 (17) :4659-4664

[15] HIGH STRENGTH ULTRA-FINE GRAINED TITANIUM PRODUCED VIA A NOVEL SPD PROCESSING ROUTE [J].

Molina-Aldareguia, J. M. ;

Perez-Prado, M. T. ;

Valiev, R. Z. ;

Semenova, I. P. ;

Sabirov, I. .

INTERNATIONAL JOURNAL OF MATERIAL FORMING, 2010, 3 :407-410

[16]

Ning J.-L., MAT SCI ENG A, V581

[17] Nanostructure and related mechanical properties of an Al-Mg-Si alloy processed by severe plastic deformation [J].

Nurislamova, Gulnaz ;

Sauvage, Xavier ;

Murashkin, Maxim ;

Islamgaliev, Rinat ;

Valiev, Ruslan .

PHILOSOPHICAL MAGAZINE LETTERS, 2008, 88 (06) :459-466

[18] High-strain-rate superplasticity of nanocrystalline aluminum alloy 1570 [J].

Perevezentsev, V. N. ;

Shcherban, M. Yu. ;

Murashkin, M. Yu. ;

Valiev, R. Z. .

TECHNICAL PHYSICS LETTERS, 2007, 33 (08) :648-650

[19] Saturation of Fragmentation During Severe Plastic Deformation [J].

Pippan, R. ;

Scheriau, S. ;

Taylor, A. ;

Hafok, M. ;

Hohenwarter, A. ;

Bachmaier, A. .

ANNUAL REVIEW OF MATERIALS RESEARCH, VOL 40, 2010, 40 :319-343

[20] The limits of refinement by severe plastic deformation [J].

Pippan, Reinhard ;

Wetscher, Florian ;

Hafok, Martin ;

Vorhauer, Andreas ;

Sabirov, Ishaf .

ADVANCED ENGINEERING MATERIALS, 2006, 8 (11) :1046-1056

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