Back to Search
Start Over
Contactless electrical conductivity measurement of metallic submicron-grain material: Application to the study of aluminum with severe plastic deformation
- Source :
- Review of Scientific Instruments. 87(Number 5)
- Publication Year :
- 2016
- Publisher :
- AIP publishing, 2016.
-
Abstract
- We measured the electrical conductivity σ of aluminum specimen consisting of submicron-grains by observing the AC magnetic susceptibility resulting from the eddy current. By using a commercial platform for magnetic measurement, contactless measurement of the relative electrical conductivity σ n of a nonmagnetic metal is possible over a wide temperature (T) range. By referring to σ at room temperature, obtained by the four-terminal method, σ n(T) was transformed into σ(T). This approach is useful for cylinder specimens, in which the estimation of the radius and/or volume is difficult. An experiment in which aluminum underwent accumulative roll bonding, which is a severe plastic deformation process, validated this method of evaluating σ as a function of the fraction of high-angle grain boundaries.
- Subjects :
- 010302 applied physics
Materials science
chemistry.chemical_element
02 engineering and technology
021001 nanoscience & nanotechnology
01 natural sciences
Magnetic susceptibility
Cylinder (engine)
law.invention
Accumulative roll bonding
chemistry
law
Electrical resistivity and conductivity
Aluminium
0103 physical sciences
Eddy current
Grain boundary
Severe plastic deformation
Composite material
0210 nano-technology
Instrumentation
Subjects
Details
- Language :
- English
- Volume :
- 87
- Issue :
- Number 5
- Database :
- OpenAIRE
- Journal :
- Review of Scientific Instruments
- Accession number :
- edsair.doi.dedup.....f943241b9d356a9bc78ff6501fafe71e