Magnetic Properties and Microstructure of a FeCo Ferritic Steel after Severe Plastic Deformation

A. Vorhauer; K. Rumpf; P. Granitzer; Siegfried Kleber; H. Krenn; Reinhard Pippan

doi:10.4028/www.scientific.net/MSF.503-504.299

Paper Titles

Evolution of Microstructure and Precipitation in Heat-Treatable Aluminium Alloys during ECA Pressing and Subsequent Heat Treatment
p.275

Effect of the Temperature of Accumulative Roll Bonding on the Microstructure and Properties of Twin-Roll Cast AA8006 Alloy
p.281

Microstructure and Mechanical Properties Resulting from Conventional Cold Extrusion of Equal Channel Angular Extruded Aluminium Alloy AA6101
p.287

Effect of Second Phase Particles on Ultra-Fine Grain Evolution during Multi-Directional Forging of Austenitic Stainless Steel
p.293

Magnetic Properties and Microstructure of a FeCo Ferritic Steel after Severe Plastic Deformation
p.299

Deformation Microstructures in a Two-Phase Stainless Steel during Large Strain Deformation
p.305

Ultra Grain Refinement of Low C Steels by Accumulative Roll Bonding
p.311

Deformation Behavior of Ultrafine Grained Iron
p.317

On Structural Mechanism of Continuous Recrystallization in Ferritic Stainless Steel after Large Strain Processing
p.323

HomeMaterials Science ForumMaterials Science Forum Vols. 503-504Magnetic Properties and Microstructure of a FeCo...

Magnetic Properties and Microstructure of a FeCo Ferritic Steel after Severe Plastic Deformation

Abstract:

A commercial FeCo ferritic steel with an initial grain size of 10 μm was subjected to Severe Plastic Deformation in a temperature range between 293 K (0.16Tm, Tm: melting temperature in K) and 723 K (0.4Tm) up to strain levels where a saturation of the microstructural refinement is observed. The microstructure of the severely deformed state is analyzed by Back Scattered Electrons micrographs captured in a SEM. The magnetic properties were characterized by means of SQUID-magnetometer providing information about the magnetization behavior of the material in the as processed state. Depending on the deformation temperature mean microstructural sizes in the steady state of 50 nm and 270 nm were observed after SPD at 293 K and 723 K, respectively. These small microstructural sizes influences significantly the magnetic properties of the material: it shifts the behavior from soft-magnetic in the initial coarse grained state towards a hard-magnetic with decreasing size of the crystallites. For sizes of the crystallites smaller than about 100 nm the magnetic properties become again more soft-magnetic.

You might also be interested in these eBooks

Nanomaterials by Severe Plastic Deformation

View Preview

Info:

Periodical:

Materials Science Forum (Volumes 503-504)

Pages:

299-304

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.503-504.299

Citation:

Cite this paper

Online since:

January 2006

Authors:

A. Vorhauer, K. Rumpf, P. Granitzer, Siegfried Kleber, H. Krenn, Reinhard Pippan

Keywords:

Magnetic Property, Microstructure, Severe Plastic Deformation (SPD)

Export:

RIS, BibTeX

Price:

Permissions:

Request Permissions

References

[1] R.Z. Valiev, R.K. Islamgaliev, I.V. Alexandrov: Progress in Materials Science, Vol. 45 (2000), pp.103-189.

Google Scholar

[2] G. Herzer, Scripta Metallurgica et Materialia, Vol. 33 (1995), pp.1741-1756.

DOI: 10.1016/0956-716x(95)00397-e

Google Scholar

[3] R. Grössinger, R. Sato, D. Holzer, M. Dahlgren, Advanced Engineering Materials 5 (2003) 285-290.

Google Scholar

[4] G.F. Korznikova, A.V. Korzinkova, L.A. Syutina, Kh. Ya. Mulyukov, J. of Magn. Mat. 196-197 (1999), pp.207-208.

Google Scholar

[5] A. Vorhauer, S. Kleber, R. Pippan, Proc. of Symp. of Ultrafine grained materials III, TMS (2004), pp.629-634.

Google Scholar

[6] A. Vorhauer, S. Kleber, R. Pippan, Influence of processing temperature on micorstructural and mechanical properties of high alloyed single phase steels subjected to severe plastic deformation, accepted for publication in Materials Science and Engineering A (2005).

DOI: 10.1016/j.msea.2005.08.119

Google Scholar

[7] R.Z. Valiev, G.F. Korznikova, Kh. Mulyukov, R.S. Mishra, A.K. Mukherjee, Phil. Mag. B 75 (1997) p.803.

Google Scholar

[8] H. Gleiter, Nanostruct. Mater. 1 (1992) 1.

Google Scholar

[9] A. Vorhauer, R. Pippan, Scripta Mat. 51 (2004) 921- 925.

Google Scholar

[10] H.P. Stüwe, Advanced Engineering Materials 5 (2003) 291-294.

Google Scholar

[11] H.J. McQueen, E. Evangelista, M.E. Kassner, Zeitschrift f. Metallkunde 82 (1991) 336-345.

Google Scholar