Amorphization and nanocrystalline Nb3Al intermetallic formation during mechanical alloying and subsequent annealing

2017 ◽  
Vol 28 (2) ◽  
pp. 340-345 ◽  
Author(s):  
H. Naghiha ◽  
B. Movahedi ◽  
M. Asadi Asadabad ◽  
M. Toghyani Mournani
Keyword(s):  
Mechanical Alloying ◽  
Subsequent Annealing ◽  
Intermetallic Formation

scholarly journals Structure-Phase Transformations in the Course of Solid-State Mechanical Alloying of High-Nitrogen Chromium-Manganese Steels

Metals ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 301
Author(s):  
Kirill Lyashkov ◽  
Valery Shabashov ◽  
Andrey Zamatovskii ◽  
Kirill Kozlov ◽  
Natalya Kataeva ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Solid State ◽  
Mechanical Alloying ◽  
Ball Milling ◽  
Ball Mill ◽  
Subsequent Annealing ◽  
High Nitrogen ◽  
Transmission Electron ◽  
Structure Phase ◽  
Manganese Steels

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.

Use of mechanical alloying and subsequent annealing for obtaining intermetallic compound CuAl2

2011 ◽  
Vol 112 (4) ◽  
pp. 356-370
Author(s):  
T. A. Sviridova ◽  
A. P. Shevchukov ◽  
E. V. Shelekhov ◽  
P. A. Borisova
Keyword(s):  
Intermetallic Compound ◽  
Mechanical Alloying ◽  
Subsequent Annealing

Study of Nano-cluster Formation in Fe-18Cr ODS Ferritic Steel by Atom Probe Tomography

2010 ◽  
Vol 1264 ◽  
Author(s):  
Olena Kalokhtina ◽  
Bertrand Radiguet ◽  
Yann de Carlan ◽  
Philippe Pareige
Keyword(s):  
Mechanical Alloying ◽  
Atom Probe Tomography ◽  
Cluster Formation ◽  
Milled Powder ◽  
Hot Extrusion ◽  
Oxide Dispersion Strengthened ◽  
Atom Probe ◽  
Subsequent Annealing ◽  
Oxide Dispersion ◽  
Oxide Dispersion Strengthened Steel

AbstractA high chromium ferritic Oxide Dispersion Strengthened steel was produced by mechanical alloying of Fe-18Cr-1W-0.3Ti-0.3Ni-0.15Si and 0.5% Y2O3 (wt.%) powders in industrial attritor, followed by hot extrusion at 1100°C. The material was characterized by Atom Probe Tomography on each step of manufacturing process: as-milled powder and in final hot extruded state. In addition, to get information on clustering kinetics the powder was also characterized after annealing at 850°C during 1 hour. Atom Probe Tomography revealed that the oxide dispersion strengthened steel Fe-18Cr contains nanometer scale yttrium- and oxygen-enriched nanoclusters in as-milled state. Their evolution is shown after subsequent annealing and hot extrusion. More well defined nanophases also enriched in Ti are observed. A mechanism of their formation is proposed. Mechanical alloying results in supersaturated solid solution with presence of small Y- and O-enriched clusters. Subsequent annealing stimulates incorporation of Ti to the nucleii that were previously formed during mechanical alloying.

Influence of milling conditions on the FeAl intermetallic formation by mechanical alloying

1996 ◽  
Vol 207 (1) ◽  
pp. 97-104 ◽  
Author(s):  
K. Wolski ◽  
G. Le Caër ◽  
P. Delcroix ◽  
R. Fillit ◽  
F. Thévenot ◽  
...  
Keyword(s):  
Mechanical Alloying ◽  
Intermetallic Formation

Preparation of FeAl–Al2O3nanocomposite via mechanical alloying and subsequent annealing

2010 ◽  
Vol 26 (9) ◽  
pp. 1132-1136 ◽  
Author(s):  
J. Pourhosseini ◽  
M. Zakeri ◽  
M. R. Rahimipour ◽  
E. Salahi ◽  
Gh. R. Pourhosseini
Keyword(s):  
Mechanical Alloying ◽  
Subsequent Annealing
Sign in / Sign up

Export Citation Format

Share Document