Dynamic recrystallisation and precipitation behaviour of high strength and highly conducting Cu-Ag-Zr-alloys

被引:48
作者
Bittner, F. [1 ,2 ]
Yin, S. [1 ,2 ]
Kauffmann, A. [1 ,2 ]
Freudenberger, J. [1 ,3 ]
Klauss, H. [1 ]
Korpala, G. [4 ]
Kawalla, R. [4 ,6 ]
Schillinger, W. [5 ]
Schultz, L. [1 ,2 ]
机构
[1] IFW Dresden, D-01171 Dresden, Germany
[2] Tech Univ Dresden, Inst Mat Sci, D-01062 Dresden, Germany
[3] TU Bergakad Freiberg, Inst Werkstoffwissensch, D-09596 Freiberg, Germany
[4] TU Bergakad Freiberg, Inst Metallformung, D-09596 Freiberg, Germany
[5] Wieland Werke AG, D-89079 Ulm, Germany
[6] NUST MISIS Moskau, Dept Plast Deformat Special Alloys, Moscow, Russia
来源
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2014年 / 597卷
关键词
Dynamic recrystallisation; Ultra-strong conductor; Ternary phase; Necklace structure; Particle stimulated nucleation; SILVER-COPPER ALLOYS; DISCONTINUOUS PRECIPITATION; MECHANICAL-PROPERTIES; MICROCOMPOSITES; MICROSTRUCTURE; ADDITIONS; SYSTEM; WIRES;
D O I
10.1016/j.msea.2013.12.051
中图分类号
TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
Dynamic recrystallisation of CuAgZr alloys within a composition range of (3-7) wt% Ag and (0.05-0.3) wt% Zr is studied as a function of alloy composition, temperature and strain. Dynamic recrystallisation was investigated using hot-compression and hot-rolling experiments at temperatures between 500 degrees C and 850 degrees C. For CuAgZr with 7 wt%Ag and 0.05 wt% Zr, an optimised hot-rolling temperature of 750 degrees C was found and a mean grain size of 25 mu m was established at a true strain of 2.2. Similar grain size distributions were found for the extended range of alloy compositions while the active mechanism for dynamic recrystallisation changes from necklace towards a particle stimulated nucleation mechanism. This change is driven by the volume fraction of the ternary phase Cu4AgZr as these particles are identified to stimulate nucleation of dynamic recrystallisation in the samples with increased Zr content. The final tapes exhibit an outstanding combination of ultimate tensile strength of 1 GPa and an electrical conductivity of 70%IACS at a true strain of 4.8 of cold work being applied. (C) 2013 Elsevier B.V. All rights reserved.
引用
收藏
页码:139 / 147
页数:9
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