Next Article in Journal
Corrosion and Serration Behaviors of TiZr0.5NbCr0.5VxMoy High Entropy Alloys in Aqueous Environments
Next Article in Special Issue
Effect of Strain Localization on Pitting Corrosion of an AlMgSi0.5 Alloy
Previous Article in Journal
Estimating the Energy State of Liquids
Open AccessArticle

Grain Refinement and High-Performance of Equal-Channel Angular Pressed Cu-Mg Alloy for Electrical Contact Wire

College of Mechanics and Materials, Hohai University, Nanjing 210098, China
*
Author to whom correspondence should be addressed.
Metals 2014, 4(4), 586-596; https://doi.org/10.3390/met4040586
Received: 29 October 2014 / Revised: 25 November 2014 / Accepted: 3 December 2014 / Published: 9 December 2014
(This article belongs to the Special Issue Ultrafine-grained Metals)
Multi-pass equal-channel angular pressing (EACP) was applied to produce ultrafine-grained (UFG) Cu-0.2wt%Mg alloy contact wire with high mechanical/electric performance, aim to overcome the catenary barrier of high-speed trains by maximizing the tension and improving the power delivery. Microstructure evolution and overall properties of the Cu-Mg alloy after different severe-plastic-deformation (SPD) routes were investigated by microscopic observation, tensile and electric tests. The results show that the Cu-Mg alloy after multi-pass ECAP at 473 K obtains ultrafine grains, higher strength and desired conductivity. More passes of ECAP leads to finer grains and higher strength, but increasing ECAP temperature significantly lower the strength increment of the UFG alloy. Grain refinement via continuous SPD processing can endow the Cu-Mg alloy superior strength and good conductivity characteristics, which are advantageous to high-speed electrification railway systems. View Full-Text
Keywords: severe-plastic-deformation (SPD); contact wire; Cu-Mg alloy; ultrafine grained (UFG); conductivity; strength severe-plastic-deformation (SPD); contact wire; Cu-Mg alloy; ultrafine grained (UFG); conductivity; strength
Show Figures

Figure 1

MDPI and ACS Style

Ma, A.; Zhu, C.; Chen, J.; Jiang, J.; Song, D.; Ni, S.; He, Q. Grain Refinement and High-Performance of Equal-Channel Angular Pressed Cu-Mg Alloy for Electrical Contact Wire. Metals 2014, 4, 586-596.

Show more citation formats Show less citations formats

Article Access Map by Country/Region

1
Only visits after 24 November 2015 are recorded.
Search more from Scilit
 
Search
Back to TopTop