Influence of alloying with hafnium on the microstructure, texture, and properties of Cu-Cr alloy after equal channel angular pressing

被引：33

作者：

Shangina, Daria ^{[1
,2
]}

Maksimenkova, Yulia ^{[1
]}

Bochvar, Natalia ^{[1
]}

Serebryany, Vladimir ^{[1
]}

Raab, Georgy ^{[3
]}

Vinogradov, Alexei ^{[2
,4
]}

Skrotzki, Werner ^{[5
]}

Dobatkin, Sergey ^{[1
,2
]}

机构：

[1] RAS, AA Baikov Inst Met & Mat Sci, Moscow 117901, Russia

[2] Natl Univ Sci & Technol MISIS, Lab Hybrid Nanostruct Mat, Moscow, Russia

[3] Ufa State Aviat Tech Univ, Ufa, Russia

[4] Norwegian Univ Sci & Technol NTNU, Trondheim, Norway

[5] Tech Univ Dresden, D-01062 Dresden, Germany

来源：

JOURNAL OF MATERIALS SCIENCE | 2016年 / 51卷 / 11期

基金：

俄罗斯基础研究基金会;

关键词：

SEVERE PLASTIC-DEFORMATION; HIGH-PRESSURE TORSION; ZR ALLOY; MECHANICAL-PROPERTIES; THERMAL-STABILITY; DUCTILITY; STRENGTH; ECAP; CONDUCTIVITY; OPTIMIZATION;

D O I：

10.1007/s10853-016-9854-2

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Equal channel angular pressing (ECAP) results in grain refinement of the Cu-0.7 % Cr alloy with an average grain size of 320 +/- A 73 nm. Addition of hafnium leads to a further decrease of average grain size down to 225 +/- A 82 nm and to an increase of the fraction of high angle boundaries from 40 to 53 %. The microhardness of the Cu-0.7 % Cr-0.9 % Hf alloy is higher than that of the Cu-0.7 % Cr alloy in the quenched state, after ECAP followed by annealing in the temperature interval of 400-550 A degrees C during which aging occurs. Compared with the quenched state, ECAP increases the tensile strength of the Cu-0.7 % Cr and Cu-0.7 % Cr-0.9 % Hf alloy by a factor of 2.3 and 2.2, respectively. Aging leads to additional strengthening. Compared with the Cu-0.7 % Cr alloy, the strength of the Cu-0.7 % Cr-0.9 % Hf alloy after ECAP and after subsequent aging is 1.3 and 1.5 times higher, respectively.

引用

页码：5493 / 5501

页数：9

共 38 条

[1] On the microstructure and texture of Cu-Cr-Zr alloy after severe plastic deformation by ECAP [J].

Abib, Khadidja ;

Munoz Balanos, Jairo Alberto ;

Alili, Baya ;

Bradai, Djamel .

MATERIALS CHARACTERIZATION, 2016, 112 :252-258

[2] Short-circuit diffusion in an ultrafine-grained copper-zirconium alloy produced by equal channel angular pressing [J].

Amouyal, Y. ;

Divinski, S. V. ;

Estrin, Y. ;

Rabkin, E. .

ACTA MATERIALIA, 2007, 55 (17) :5968-5979

[3]

[Anonymous], 2008, NANOMATERIALS SEVERE

[4]

[Anonymous], 2003, NANOMATERIALS SEVERE

[5]

[Anonymous], 2005, NANOMATERIALS SEVERE

[6]

Chakrabarti D.J., 1984, Bull. Alloy Phase Diagr., V5, P59, DOI [10.1007/BF02868727, DOI 10.1007/BF02868727]

[7] Aging Processes in Ultrafine-Grained Low-Alloyed Bronzes Subjected to Equal Channel Angular Pressing [J].

Dobatkin, Sergey V. ;

Bochvar, Natalia R. ;

Shangina, Daria V. .

ADVANCED ENGINEERING MATERIALS, 2015, 17 (12) :1862-1868

[8] Effect of deformation schedules and initial states on structure and properties of Cu-0.18% Zr alloy after high-pressure torsion and heating [J].

Dobatkin, Sergey V. ;

Shangina, Daria V. ;

Bochvar, Natalia R. ;

Janecek, Milos .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2014, 598 :288-292

[9] Microstructure evolution of CuZr polycrystals processed by high-pressure torsion [J].

Dopita, Milan ;

Janecek, Milos ;

Kuzel, Radomir ;

Seifert, Hans Juergen ;

Dobatkin, Sergey .

JOURNAL OF MATERIALS SCIENCE, 2010, 45 (17) :4631-4644

[10] EBSD investigation of the grain boundary distributions in ultrarine-grained Cu and Cu-Zr polycrystals prepared by equal-channel angular pressing [J].

Dopita, Milan ;

Janecek, Milos ;

Rafaja, David ;

Uhlir, Jaromir ;

Matej, Zdenek ;

Kuzel, Radomir .

INTERNATIONAL JOURNAL OF MATERIALS RESEARCH, 2009, 100 (06) :785-789

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