Micostructure and Magnetic Properties in Nanostructured Fe and Fe-Based Intermetallics Produced by High-Pressure Torsion
| Autor: | Akihide Hosokawa, Hideyuki Ohtsuka, Seiichiro, Tiantian Li, Koichi Tsuchiya |
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| Rok vydání: | 2014 |
| Předmět: |
Materials science
Mechanical Engineering Coercivity Condensed Matter Physics Microstructure Focused ion beam Grain size Crystallography Ferromagnetism Mechanics of Materials Transmission electron microscopy General Materials Science Composite material Severe plastic deformation Electron backscatter diffraction |
| Zdroj: | MATERIALS TRANSACTIONS. 55:1286-1291 |
| ISSN: | 1347-5320 1345-9678 |
| DOI: | 10.2320/matertrans.m2014119 |
| Popis: | © 2014 The Japan Institute of Metals and Materials. © 2014 The Japan Institute of Metals and Materials. The microstructure and magnetic properties of nanostructured pure iron, FeCo and FeNi3 produced by high-pressure torsion (HPT) were investigated. Electron backscattered diffraction (EBSD) technique was used to study the evolutions in microstructure and crystallographic texture during HPT, revealing that a weak deformation texture with an orientation of h110ibcc being parallel to the disc normal for pure iron and FeCo while h110ifcc was found to be parallel to the hoop direction of the HPT disc in FeNi3. The grain size of the HPTed materials was characterized by means of EBSD and transmission electron microscopy (TEM), and its influence on the coercivity was investigated. The other highlight of this paper is the use of a focused ion beam (FIB)-SEM dual beam instrument. This enabled us to obtain quite high image quality (IQ) values for the EBSD measurements even for the highly deformed microstructure in the current ferromagnetic intermetallics. |
| Databáze: | OpenAIRE |
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