Synthesis and colloidal dispersion of nanocrystalline ferroelectric Nd-substituted Bi4Ti3O12 powder by mechanical alloying

2008 ◽  
Vol 59 (2) ◽  
pp. 143-146 ◽  
Author(s):  
Kyusuk Han ◽  
Taegyung Ko ◽  
Jaehee Oh
Keyword(s):  
Mechanical Alloying ◽  
Colloidal Dispersion

Microstructure of mechanically alloyed and hot-pressed Al5CuZr2

1990 ◽  
Vol 48 (4) ◽  
pp. 970-971
Author(s):  
T. E. Mitchell ◽  
P. B. Desch ◽  
R. B. Schwarz
Keyword(s):  
Mechanical Alloying ◽  
Vickers Hardness ◽  
Hot Pressing ◽  
Rapid Quenching ◽  
Hardened Steel ◽  
Alloyed Powder ◽  
Ion Milling ◽  
Mechanical Grinding ◽  
Mechanically Alloyed ◽  
Steel Container

Al3Zr has the highest melting temperature (1580°C) among the tri-aluminide intermetal1ics. When prepared by casting, Al3Zr forms in the tetragonal DO23 structure but by rapid quenching or by mechanical alloying (MA) it can also be prepared in the metastable cubic L12 structure. The L12 structure can be stabilized to at least 1300°C by the addition of copper and other elements. We report a TEM study of the microstructure of bulk Al5CuZr2 prepared by hot pressing mechanically alloyed powder.MA was performed in a Spex 800 mixer using a hardened steel container and balls and adding hexane as a surfactant. Between 1.4 and 2.4 wt.% of the hexane decomposed during MA and was incorporated into the alloy. The mechanically alloyed powders were degassed in vacuum at 900°C. They were compacted in a ram press at 900°C into fully dense samples having Vickers hardness of 1025. TEM specimens were prepared by mechanical grinding followed by ion milling at 120 K. TEM was performed on a Philips CM30 at 300kV.

Dynamic compaction domain (shock compaction energy vs. ρ0/ρ) for a Fe-15 atomic % Cu nanometric alloy obtained by mechanical alloying

2003 ◽  
Vol 110 ◽  
pp. 803-808 ◽  
Author(s):  
R. G. Esquives ◽  
E. M. Orozco ◽  
C. T. Renero ◽  
D. V. Jaramillo
Keyword(s):  
Mechanical Alloying ◽  
Dynamic Compaction ◽  
Shock Compaction ◽  
Compaction Energy

Mechanical properties of FeAlSi powders prepared by mechanical alloying from different initial feedstock materials

2019 ◽  
Vol 107 (2) ◽  
pp. 207 ◽  
Author(s):  
Jaroslav Čech ◽  
Petr Haušild ◽  
Miroslav Karlík ◽  
Veronika Kadlecová ◽  
Jiří Čapek ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Mechanical Alloying ◽  
Young’S Modulus ◽  
Milling Time ◽  
Young's Modulus ◽  
Element Model ◽  
X Ray Diffraction ◽  
X Ray ◽  
Powder Particles ◽  
Complete Homogenization

FeAl20Si20 (wt.%) powders prepared by mechanical alloying from different initial feedstock materials (Fe, Al, Si, FeAl27) were investigated in this study. Scanning electron microscopy, X-ray diffraction and nanoindentation techniques were used to analyze microstructure, phase composition and mechanical properties (hardness and Young’s modulus). Finite element model was developed to account for the decrease in measured values of mechanical properties of powder particles with increasing penetration depth caused by surrounding soft resin used for embedding powder particles. Progressive homogenization of the powders’ microstructure and an increase of hardness and Young’s modulus with milling time were observed and the time for complete homogenization was estimated.

Hydrogenation Properties of Mg-5 wt.% TiCr10NbX (x=1,3,5) Composites by Mechanical Alloying Process

2011 ◽  
Vol 49 (03) ◽  
pp. 264-269 ◽  
Author(s):  
Kyeong-Il Kim ◽  
Tae-Whan Hong
Keyword(s):  
Mechanical Alloying

Rietveld quantitative phase analyses in iron alloys processed by mechanical alloying method

2009 ◽  
Vol 2009 (30) ◽  
pp. 291-296
Author(s):  
H. J. Krzton ◽  
W. Pilarczyk
Keyword(s):  
Mechanical Alloying ◽  
Iron Alloys ◽  
Quantitative Phase

Incorporation of carbon nanotubes in stainless steel 304L via mechanical alloying

2017 ◽  
Author(s):  
paola baia ◽  
Diego Jorge Alves Borges ◽  
Danyella Crystyane Silva Cardoso ◽  
Victor Ferreira ◽  
Paulo Assunção ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Stainless Steel ◽  
Mechanical Alloying ◽  
Stainless Steel 304L

Effect of mechanical alloying on FeCrC reinforced Ni alloys

2016 ◽  
Vol 58 (4) ◽  
pp. 337-342
Author(s):  
S. Osman Yilmaz ◽  
Tanju Teker ◽  
Fatih Demir
Keyword(s):  
Mechanical Alloying ◽  
Ni Alloys

High-Temperature Deformation Behavior of Ti3Al Prepared by Mechanical Alloying and Hot Pressing

2020 ◽  
Vol 30 (2) ◽  
pp. 57-60
Author(s):  
Chang-Suk Han ◽  
◽  
Sung-Yooun Jin ◽  
Hyuk-Ku Kwon
Keyword(s):  
High Temperature ◽  
Mechanical Alloying ◽  
Hot Pressing ◽  
Deformation Behavior ◽  
High Temperature Deformation ◽  
Temperature Deformation
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