Tailoring the magnetic properties of nanocrystalline Cu-Co alloys prepared by high-pressure torsion and isothermal annealing

Year: 
2017
Month: 
7
Day: 
22
Pages: 
744-749
DOI: 
10.1016/j.jallcom.2017.07.200
Type: 
Journal Articles
Journal: 
Journal of Alloys and Compounds
Volume: 
725
Abstract: 

In this study, severe plastic deformation by high-pressure torsion is used as a fabrication method for nanocrystalline magnetic CueCo alloys in bulk quantities. By subsequent isothermal annealing, phase separation of the supersaturated solid solutions can be obtained. The magnetic properties of the asprocessed and annealed materials have been studied systematically and correlated to the evolving
nanostructures investigated in detail by transmission electron microscopy and atom probe tomography. By additional high-pressure torsion deformation at liquid nitrogen temperature the magnetic properties of the Cu74Co26 alloy can be further tuned.