Structural evolution of Fe–50at.% Al powders during mechanical alloying and subsequent annealing processes

The solid-state mechanical alloying (MA) of high-nitrogen chromium-manganese austenite steel—MA in a planetary ball mill, —was studied by methods of Mössbauer spectroscopy and transmission electron microscopy (TEM). In the capacity of a material for the alloying we used mixtures of the binary Fe–Mn and Fe–Cr alloys with the nitrides CrN (Cr2N) and Mn2N. It is shown that ball milling of the mixtures has led to the occurrence of the α → γ transitions being accompanied by the (i) formation of the solid solutions supersaturated with nitrogen and by (ii) their decomposition with the formation of secondary nitrides. The austenite formed by the ball milling and subsequent annealing at 700–800 °C, was a submicrocrystalline one that contained secondary nano-sized crystalline CrN (Cr2N) nitrides. It has been established that using the nitride Mn2N as nitrogen-containing addition is more preferable for the formation and stabilization of austenite—in the course of the MA and subsequent annealing—because of the formation of the concentration-inhomogeneous regions of γ phase enriched with austenite-forming low-mobile manganese.

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Phase transformation, structural evolution and mechanical property of nanostructured FeAl as a result of mechanical alloying

Russian Journal of Non-Ferrous Metals ◽

10.3103/s1067821209050095 ◽

2009 ◽

Vol 50 (5) ◽

pp. 474-484 ◽

Cited By ~ 3

Author(s):

M. M. Rajath Hegde ◽

A. O. Surendranathan

Keyword(s):

Mechanical Property ◽

Phase Transformation ◽

Mechanical Alloying ◽

Structural Evolution

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Structural evolution in mechanical alloying of Co and B powders

Journal of Non-Crystalline Solids ◽

10.1016/0022-3093(92)90179-n ◽

1992 ◽

Vol 150 (1-3) ◽

pp. 487-490 ◽

Cited By ~ 12

Author(s):

A. Corrias ◽

G. Ennas ◽

G. Marongiu ◽

A. Musinu ◽

G. Paschina

Keyword(s):

Mechanical Alloying ◽

Structural Evolution

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Structural evolution in nanocrystalline Fe-10 Wt pct Cr alloy powder produced by mechanical alloying—An atomic-force microscopy study

Metallurgical and Materials Transactions A ◽

10.1007/s11661-005-0090-7 ◽

2005 ◽

Vol 36 (11) ◽

pp. 3195-3204 ◽

Cited By ~ 4

Author(s):

M. Ananda Rao ◽

Sanjeev Bhargava ◽

Dinesh Deva

Keyword(s):

Atomic Force Microscopy ◽

Mechanical Alloying ◽

Alloy Powder ◽

Structural Evolution ◽

Microscopy Study ◽

Atomic Force Microscopy Study ◽

Force Microscopy ◽

Atomic Force

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SYNTHESIS OF NANO-CRYSTALLINE Cu-Cr ALLOY BY MECHANICAL ALLOYING

International Journal of Modern Physics Conference Series ◽

10.1142/s2010194512002395 ◽

2012 ◽

Vol 05 ◽

pp. 496-501 ◽

Cited By ~ 4

Author(s):

S. SHEIBANI ◽

S. HESHMATI-MANESH ◽

A. ATAIE

Keyword(s):

Mechanical Alloying ◽

Structural Evolution ◽

High Energy ◽

Lattice Parameter ◽

Control Agent ◽

Milling Process ◽

X Ray Diffraction ◽

Nano Crystalline ◽

High Energy Ball Mill ◽

Energy Ball

In this paper, the influence of toluene as the process control agent (PCA) and pre-milling on the extension of solid solubility of 7 wt.% Cr in Cu by mechanical alloying in a high energy ball mill was investigated. The structural evolution and microstructure were characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM) techniques, respectively. The solid solution formation at different conditions was analyzed by copper lattice parameter change during the milling process. It was found that both the presence of PCA and pre-milling of Cr powder lead to faster dissolution of Cr . The mean crystallite size was also calculated and showed to be about 10 nm after 80 hours of milling.

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