Paper Title:
Microstructure and Magnetic Properties of Two Phase β+γ Ferromagnetic Co-Ni-Al Alloys
  Abstract

The microstructure, texture and magnetic properties of two ferromagnetic alloys of composition Co35Ni37Al28 and Co37Ni35Al28 (in at. %) were investigated with optical microscopy (OM), analytical transmission electron microscopy (TEM), scanning electron microscopy (SEM) techniques as well as a vibrating sample magnetometer (VSM). The alloys were plastically deformed and heat treated in order to promote the martensitic transformation. Differential scanning calorimetry (DSC) revealed a drop of Ms temperature due to the increase of Co content in the alloys. The elongated twinned grains of size about 200 m and small precipitates of  phase were identified with the OM techniques. The TEM observations showed the twinned L10 non modulated martensite within the elongated grains and a small amount of ordered ’ phase after the heat treatment. The chemical composition of different martensite grains was established using point analyses of a HAADF-EDS technique. The magnetic phase transition temperatures were determined on the deformed samples using VSM method.

  Info
Periodical
Solid State Phenomena (Volume 154)
Edited by
Marcin Leonowicz and Dariusz Oleszak
Pages
145-150
DOI
10.4028/www.scientific.net/SSP.154.145
Citation
W. Maziarz, J. Dutkiewicz, R. Wróblewski, M. Leonowicz, "Microstructure and Magnetic Properties of Two Phase β+γ Ferromagnetic Co-Ni-Al Alloys", Solid State Phenomena, Vol. 154, pp. 145-150, 2009
Online since
April 2009
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Z. Stokłosa, G. Badura, P. Kwapuliński, Józef Rasek, G. Haneczok, Józef Lelątko, Lucjan Pająk
Abstract:The crystallization and optimization of magnetic properties effects in FeXSiB (X=Cu, V, Co, Zr, Nb) amorphous alloys were studied by...
171
Authors: M. Kolář, Vladivoj Očenášek, J. Uhlíř, Ivana Stulíková, Bohumil Smola, Martin Vlach, V. Neubert, K. Šperlink
Abstract:The influence of plastic deformation and heat-treatment on the precipitation of Al3(Sc, Zr) particles and the effect of these precipitates...
357
Authors: Victor I. Kolomytsev, M. Babanly, Alexandre Pasko, A.P. Shpak, Tetjana Sych, P. Ochin, Philippe Vermaut, Richard Portier, Eduard Cesari, D. Rafaja
Abstract:A series of multielementary AB-type shape memory alloys, quaternary (Ti,Hf)50(Ni,Cu)50 and quinary (Ti,Zr,Hf)50(Ni,Cu)50, have been produced...
113
Authors: Lidia Lityńska-Dobrzyńska, Patrick Ochin, Anna Góral, Marek Faryna, Jan Dutkiewicz
Abstract:The effect of rapid solidification on the microstructure of Al-Zn-Mg-Cu alloys with 8 wt.% Zn-2 wt.% Mg-2.3 wt.% Cu and 0.2 or 0.5 wt.% of Zr...
42
Authors: Gang Wang, Wen Ru Zhao, Yan Dong Liu, Chun Yan Wang, Yan Dong Wang, Liang Zuo
Abstract:In recent years, there has been an increasing interest in magnetic shape memory alloys (MSMAs) due to their unique ability to produce very...
2188