Paper Title:
Extruded Rods with <001> Axial Texture of Polycrystalline Ni-Mn-Ga Alloys
  Abstract

The Ni-Mn-Ga alloys extruded at high temperature with a relatively large reduction rate were the subject of the studies. The microscopic observations of the transient zone in the extruded rods revealed rotation of the columnar grains in the ingot along the rod axis - giving the preferred <001> orientations. Comparison of the texture, magnetization and magneto-crystalline anisotropy constant for samples cut out from the columnar grain zone and these cut from the extruded rods was carried out for two alloys which differ in chemical composition and Ms temperature. Both alloys have the 5M martensitic structure at room temperature. The samples cut out of the ingot and the extruded rods have shown the axial <001> orientation, similar magnetization curves and magnetocrystalline anisotropy constant Ku = 1.5-1.6 J/m3•105.

  Info
Periodical
Edited by
V. A. Chernenko and J. M. Barandiaran
Pages
189-194
DOI
10.4028/www.scientific.net/MSF.635.189
Citation
H. Morawiec, J. Lelątko, T. Goryczka, K. Prusik, S. Piechota, D. Stróż, "Extruded Rods with <001> Axial Texture of Polycrystalline Ni-Mn-Ga Alloys", Materials Science Forum, Vol. 635, pp. 189-194, 2010
Online since
December 2009
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