Nanocrystalline FeAl intermetallics obtained in mechanically alloyed Fe50Al40Ni10 powder

被引：18

作者：

Hadef, F. ^{[1
]}

Otmani, A. ^{[1
]}

Djekoun, A. ^{[2
]}

Greneche, J. M. ^{[3
]}

机构：

[1] Univ Skikda, Lab Rech Physicochim Surfaces & Interfaces, Skikda, Algeria

[2] Univ Annaba, Lab Magnetisme & Spect Solide, Annaba, Algeria

[3] Univ Maine, Lab Phys Etat Condense, CNRS, UMR 6087, F-72085 Le Mans, France

来源：

SUPERLATTICES AND MICROSTRUCTURES | 2011年 / 49卷 / 06期

关键词：

Nanostructured materials; Mechanical alloying; Order-disorder effects; X-ray diffraction; Fe-57 Mossbauer spectroscopy; TO-FERROMAGNETIC TRANSITION; MAGNETIC-PROPERTIES; STRUCTURAL-CHARACTERIZATION; PLASTIC-DEFORMATION; POINT-DEFECTS; AL ALLOYS; X-RAY; MOSSBAUER; IRON; NI;

D O I：

10.1016/j.spmi.2011.04.003

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

B2-Fe47Al53 intermetallics has been produced by mechanical alloying in a planetary ball mill, using elemental Fe, Al and Ni powder mixture. The microstructural and magnetic properties of the mechanically alloyed Fe50Al40Ni10 powdered samples were investigated by X-ray diffraction and Fe-57 Mossbauer spectrometry at 300 and 77 K. As resulted from the X-ray diffraction studies, the ordered B2 structure was formed in the Fe50Al40Ni10 powder, together with the bcc alpha(i)-Fe(Al, Ni) (i = 1,2) solid solutions. Further milling led to a partial disordering of B2-Fe47Al53; it has undergone an order-disorder transition which is characterized by an expansion of the volume Delta a(0) (lattice disorder) and a magnetic transition from the paramagnetic to ferromagnetic state which is characterized by strong ferromagnetic interactions in the alloy. The nanocrystalline bcc alpha(i)-Fe(Al, Ni) solid solution was ferromagnetic with a mean crystallite size of 6 nm. (C) 2011 Elsevier Ltd. All rights reserved.

引用

页码：654 / 665

页数：12