A comparison of the phase evolution in Ni, Al, and Ti powder mixtures synthesized by SHS and MA processes

2009 ◽  
Vol 479 (1-2) ◽  
pp. 314-325 ◽  
Author(s):  
Le-Chun Hsiung ◽  
Hung-Hua Sheu
Keyword(s):  
Phase Evolution ◽  
Powder Mixtures ◽  
Ti Powder

Development of Nano-Structure Cu-Ti Alloys by Mechanical Alloying Process

2013 ◽  
Vol 829 ◽  
pp. 168-172 ◽  
Author(s):  
Ahdie Pourfereidouni ◽  
Gholam Hossein Akbari
Keyword(s):  
Milled Powder ◽  
Lattice Parameter ◽  
X Ray Diffraction ◽  
Powder Mixtures ◽  
Nano Structure ◽  
Cu Alloys ◽  
Ti Alloys ◽  
Alloy Process ◽  
Electrical Conductivities ◽  
Ti Powder

Cu-Ti system with a terminal solution in the Cu-rich portion of equilibrium Cu-Ti phase diagram with a decreasing trend with temperature shows a potential to develop age hardenable alloys with suitable strength and thermal and electrical conductivities. In the present study, the mechanical alloy process has been employed to increase solubility of Ti in Cu matrix to make age hardenable Cu alloys. Cu-Ti powder mixtures with different rations of 1 and 6 wt% of Ti were milled in planetary ball mill for different milling times of 4, 12, 48, 96 and 192 hours. The milled powder mixtures were investigated and characterised by X-ray diffraction (XRD) technique. The results show increasing in lattice parameter of Cu, which indicates that Ti atoms are dissolved in the Cu matrix. Cu crystal sizes showed decreasing trend which were more obvious in the mixture with higher Ti contents. The final crystal sizes were in the range of 17-23 nm after 192 hours of milling.

scholarly journals Role of oxygen and nitrogen in mechanical alloying mechanism of Ni–Ti powder mixtures

2012 ◽  
Vol 55 (4) ◽  
pp. 268-272 ◽  
Author(s):  
F Neves ◽  
F M Braz Fernandes ◽  
I Martins ◽  
J B Correia
Keyword(s):  
Mechanical Alloying ◽  
Powder Mixtures ◽  
Ti Powder

Spark plasma sintering of WC-Ti powder mixtures and properties of obtained composites

2022 ◽  
Author(s):  
Dariusz Garbiec ◽  
Alexander M. Laptev ◽  
Volf Leshchynsky ◽  
Maria Wiśniewska ◽  
Paweł Figiel ◽  
...  
Keyword(s):  
Spark Plasma Sintering ◽  
Powder Mixtures ◽  
Plasma Sintering ◽  
Spark Plasma ◽  
Ti Powder

scholarly journals Synthesis of TiB2-TiC-Ti3SiC2 Composites by Reactive Hot Pressing of B4C-SiC-Ti Powder Mixtures

2008 ◽  
Vol 49 (10) ◽  
pp. 2335-2340 ◽  
Author(s):  
Hitoshi Taimatsu ◽  
Shigeaki Sugiyama ◽  
Shuhou Koseki
Keyword(s):  
Hot Pressing ◽  
Powder Mixtures ◽  
Ti Powder ◽  
Reactive Hot Pressing

scholarly journals Microstructural Evolution, Thermodynamics and Kinetics of Mo-Tm2O3 Powder Mixtures during Ball Milling

2016 ◽  
Author(s):  
Yong Luo ◽  
Guang Ran ◽  
Nanjun Chen ◽  
Qiang Shen ◽  
Yaoli Zhang
Keyword(s):  
Solid Solution ◽  
Ball Milling ◽  
Microstructural Evolution ◽  
Driving Force ◽  
Phase Evolution ◽  
Heat Of Mixing ◽  
Powder Mixtures ◽  
Thermodynamics And Kinetics ◽  
Transmission Electron ◽  
Kinetics Of

The microstructural evolution, thermodynamics and kinetics of Mo-21%Tm2O3 (mass fraction, %) powder mixtures during ball milling were investigated using X-ray diffraction and transmission electron microscopy. Ball milling induced Tm2O3 to be decomposed and then dissolved into Mo crystal. The supersaturated nanocrystalline solid solution of Mo (Tm, O) was obtained after 96 h of ball milling. The elements of Mo, Tm and O were distributed uniformly in the ball-milled particles. Based on the semi-experimental theory of Miedema, a thermodynamic model was developed to calculate the driving force of phase evolution. There was no chemical driving force to form a crystal solid solution of Tm atoms in Mo crystal or an amorphous phase because the Gibbs free energy for both processes was higher than zero. For Mo-21%Tm2O3, it was mechanical work, not negative heat of mixing, that provided the driving force to form supersaturated nanocrystalline Mo (Tm, O) solid solution.

Effect of Al Content on Structural Changes in Mechanically Alloyed Al-Ti Powder Mixtures

1996 ◽  
Vol 235-238 ◽  
pp. 67-72 ◽  
Author(s):  
Alexandr V. Leonov ◽  
E. Szewczak ◽  
O.E. Gladilina ◽  
Henryk Matyja ◽  
V.I. Fadeeva
Keyword(s):  
Structural Changes ◽  
Mechanically Alloyed ◽  
Powder Mixtures ◽  
Al Content ◽  
Ti Powder
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