Grain refinement in CuCrZr by SPD processing

被引：29

作者：

Kulczyk, Mariusz ^{[1
]}

Zysk, Beata ^{[2
]}

Lewandowska, Malgorzata ^{[2
]}

Kurzydlowski, Krzysztof J. ^{[2
]}

机构：

[1] Polish Acad Sci, Inst High Pressure Phys UNIPRESS, PL-01142 Warsaw, Poland

[2] Warsaw Univ Technol, Fac Mat Sci & Engn, PL-02507 Warsaw, Poland

来源：

PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE | 2010年 / 207卷 / 05期

关键词：

CuCrZr; extrusion; mechanical properties; plastic deformation; structure; work hardening; SEVERE PLASTIC-DEFORMATION; HYDROSTATIC EXTRUSION; NICKEL; MICROSTRUCTURE; ALUMINUM; STEEL; ALLOY;

D O I：

10.1002/pssa.200983378

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

CuCrZr alloys exhibit relatively high strength (due to precipitation hardening) and high thermal and electrical conductivity which make them attractive for variety of applications, e.g. as heat sinks and electrodes. In the present study, a CuCrZr alloy was subjected to severe plastic deformation (SPD) to increase its strength by grain refinement without modification of the chemical composition. A combination of the multi-pass equal channel angular pressing (ECAP) followed by cumulative hydrostatic extrusion (HE) was applied with a total true strain of 11.5. The microstructure of SPD samples was evaluated by transmission and scanning electron .microscopy The, grain sizes were quantitatively described. The resulting mechancial properties were determined intensile tests and via microhardness measurements. The results show that the applied SPD route, combining ECAP and HE, leads to high grain size refinement accompined by high increase of strength. (C) WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

引用

页码：1136 / 1138

页数：3

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