Structural Evolution in Mechanically Alloyed Fe-Sn

1999 ◽  
pp. 151-160 ◽  
Author(s):  
G. A. Dorofeev ◽  
G. N. Konygin ◽  
E. P. Yelsukov ◽  
I. V. Povstugar ◽  
A. N. Streletskii ◽  
...  
Keyword(s):  
Structural Evolution ◽  
Mechanically Alloyed

scholarly journals Structural Evolution in Wet Mechanically Alloyed Co-Fe-(Ta,W)-B Alloys

Metals ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 800
Author(s):  
Vladimír Girman ◽  
Maksym Lisnichuk ◽  
Daria Yudina ◽  
Miloš Matvija ◽  
Pavol Sovák ◽  
...  
Keyword(s):  
Structural Changes ◽  
Magnetic Measurements ◽  
Structural Evolution ◽  
High Energy ◽  
Control Agent ◽  
X Ray Diffraction ◽  
Mechanically Alloyed ◽  
X Ray ◽  
Transmission Electron ◽  
X Ray Absorption

In the present study, the effect of wet mechanical alloying (MA) on the glass-forming ability (GFA) of Co43Fe20X5.5B31.5 (X = Ta, W) alloys was studied. The structural evolution during MA was investigated using high-energy X-ray diffraction, X-ray absorption spectroscopy, high-resolution transmission electron microscopy and magnetic measurements. Pair distribution function and extended X-ray absorption fine structure spectroscopy were used to characterize local atomic structure at various stages of MA. Besides structural changes, the magnetic properties of both compositions were investigated employing a vibrating sample magnetometer and thermomagnetic measurements. It was shown that using hexane as a process control agent during wet MA resulted in the formation of fully amorphous Co-Fe-Ta-B powder material at a shorter milling time (100 h) as compared to dry MA. It has also been shown that substituting Ta with W effectively suppresses GFA. After 100 h of MA of Co-Fe-W-B mixture, a nanocomposite material consisting of amorphous and nanocrystalline bcc-W phase was synthesized.

Structural evolution of mechanically alloyed nanocrystalline Fe–28Al powders

2005 ◽  
Vol 149 (2-3) ◽  
pp. 121-126 ◽  
Author(s):  
Run-hua Fan ◽  
Jia-tao Sun ◽  
Hong-yu Gong ◽  
Kang-ning Sun ◽  
Wei-min Wang
Keyword(s):  
Structural Evolution ◽  
Mechanically Alloyed

Structural evolution during heat treatment of mechanically alloyed Al–Cu–Fe–(Si) alloys

2001 ◽  
Vol 304-306 ◽  
pp. 822-829 ◽  
Author(s):  
Ki Buem Kim ◽  
Suk Hwan Kim ◽  
Won Tae Kim ◽  
Do-Hyang Kim ◽  
Kyung-Tae Hong
Keyword(s):  
Heat Treatment ◽  
Structural Evolution ◽  
Mechanically Alloyed

Structural evolution of mechanically alloyed TiAl alloys

1992 ◽  
Vol 158 (1) ◽  
pp. 93-101 ◽  
Author(s):  
C. Suryanarayana ◽  
Guo-Hao Chen ◽  
Abdulbaset Frefer ◽  
F.H. Froes
Keyword(s):  
Structural Evolution ◽  
Al Alloys ◽  
Mechanically Alloyed

Phase selection in a mechanically alloyed Cu2013;In–Ga–Se powder mixture

1999 ◽  
Vol 14 (2) ◽  
pp. 377-383 ◽  
Author(s):  
C. Suryanarayana ◽  
E. Ivanov ◽  
R. Noufi ◽  
M. A. Contreras ◽  
J.J. Moore
Keyword(s):  
Grain Size ◽  
Hot Isostatic Pressing ◽  
Structural Evolution ◽  
Full Density ◽  
Alloyed Powder ◽  
X Ray Diffraction ◽  
Mechanically Alloyed ◽  
Phase Selection ◽  
Blended Elemental ◽  
Transmission Electron

Formation of a homogeneous nanocrystalline CuIn0.7Ga0.3Se2 alloy was achieved by mechanical alloying of blended elemental Cu, In, Ga, and Se powders in a planetary ball mill. X-ray diffraction and transmission electron microscopy and diffraction techniques were employed to follow the structural evolution during milling. It was observed that, depending upon the milling conditions, either a metastable cubic or a stable tetragonal phase was produced. The grain size of the mechanically alloyed powder was about 10 nm. The mechanically alloyed powder was consolidated to full density by hot isostatic pressing the powder at 750 °C and 100 MPa for 2 h. Irrespective of the nature of the phase in the starting powder, the hot isostatically pressed compact contained the well-recrystallized tetragonal CuIn0.7Ga0.3Se2 phase with a grain size of about 50 nm.

scholarly journals Structural Evolution of Nano-sized Oxide Particles Formed in Mechanically Alloyed Fe-10Cr-5Y2O3 Powders

Metals ◽  
2020 ◽  
Vol 10 (3) ◽  
pp. 310
Author(s):  
Ga Eon Kim ◽  
Tae Kyu Kim ◽  
Sanghoon Noh
Keyword(s):  
Heat Treatment ◽  
Phase Transformation ◽  
Mechanical Alloying ◽  
Morphological Change ◽  
Ball Mill ◽  
Structural Evolution ◽  
Oxide Phase ◽  
High Energy ◽  
Mechanically Alloyed ◽  
Oxide Particles

Fe-10Cr-5Y2O3 powders were mechanically alloyed using a high energy horizontal ball-mill apparatus, and the effect of heat treatment on the behavior of nano-sized oxide particles formed in the mechanically alloyed Fe-10Cr-5Y2O3 powders was investigated. Elongated Cr-rich and Y-rich oxides were observed in the mechanically alloyed powders. During the heating of these powders above 700 °C, the elongated Cr-rich oxides were dramatically changed to a near- spherical morphology. Cubic-Y2O3, monoclinic-Y2O3 and YFeO3 phases were also found after heat treatment at 1150 °C for 1h, indicating that the Y-rich oxide phase was transformed to the cubic-Y2O3, monoclinic-Y2O3 and YFeO3 ones. It is thus concluded that both a morphological change of Cr-rich oxide and a phase transformation of Y-rich oxide during the heating of mechanically alloyed powders could be mainly attributed to extremely high energy, accumulated by the mechanical alloying process.

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