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Optimization of strength, ductility and electrical conductivity of a Cu–Cr–Zr alloy by cold rolling and aging treatment
- Source :
- Vacuum. 167:329-335
- Publication Year :
- 2019
- Publisher :
- Elsevier BV, 2019.
-
Abstract
- To balance the paradox of both high mechanical properties and electrical conductivity of copper alloys, a nominal hot-rolled Cu-0.4 wt.%Cr-0.3 wt.%Zr alloy strips were subjected to different thermo-mechanical process. The microstructures of the alloys are characterized by optical microscopy and transmission electron microscopy and the mechanical properties and the electrical conductivity are evaluated. The results show that a desired combination of strength, ductility and conductivity can be obtained by controlling the sequence of cold rolling and aging. It suggests that the treatment route with an order of aging followed by cold rolling (ACR) is better than that with the order of cold rolling with aging (CRA). The ultimate tensile strength 568 MPa and electrical conductivity 75.3%IACS are obtained after aging at 450 °C for 3 h followed by 80% cold rolling at room temperature. The high electrical conductivity and ductility is attributed to twin lamellar structure.
- Subjects :
- 010302 applied physics
Materials science
Alloy
chemistry.chemical_element
02 engineering and technology
Conductivity
engineering.material
021001 nanoscience & nanotechnology
Condensed Matter Physics
Microstructure
01 natural sciences
Copper
Surfaces, Coatings and Films
law.invention
chemistry
Optical microscope
Electrical resistivity and conductivity
law
0103 physical sciences
Ultimate tensile strength
engineering
Composite material
0210 nano-technology
Ductility
Instrumentation
Subjects
Details
- ISSN :
- 0042207X
- Volume :
- 167
- Database :
- OpenAIRE
- Journal :
- Vacuum
- Accession number :
- edsair.doi...........71249907a94abe0bd0da58d61f6dec73