toop model
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2017 ◽  
Vol 5 (2) ◽  
pp. 24-29 ◽  
Author(s):  
Natalia Kotova ◽  
Michael Ivanov ◽  
Natalia Usenko

The enthalpies of mixing of liquid alloys of the ternary Cu–Sb–Ce system were studied by high-temperature calorimetry along the cross-section = 0.2/0.8. The composition dependence of these values were modelled using four "geometric" models and also the analytical method of Redlich–Kister–Muggianu. A comparison of the experimental data for the cross section = 0.2/0.8 and simulated values of the enthalpies of mixing showed that the most suitable for describing the properties of liquid alloys of ternary Cu–Sb–Ce system is the Toop model.





2013 ◽  
Vol 690-693 ◽  
pp. 3343-3349
Author(s):  
Feng Ying Zhang ◽  
Hua Tan ◽  
Hong Chen ◽  
Guang Sheng Liang

Ti-6Al-4V alloy samples were deposited by laser solid forming from blended 90wt%Ti+6wt%Al+4wt%V powders and from pre-alloyed Ti-6Al-4V powders under the same processing parameters, and the geometric properties of the deposited samples were studied comparatively. It was found that the height and the width of the deposited layers increased with the increase of the laser power and the decrease of the laser scanning velocity. Meanwhile, the height and the width of the deposited layer obtained from blended elemental powders are much higher than that from pre-alloyed powders. The mixing enthalpy for Ti-6Al-4V was calculated by using the Miedema model and the Toop model, and it was found that the alloying process for Ti, Al and V in the molten pool is exothermic, which is responsible for the higher deposited layer height and width of LSF Ti-6Al-4V from blended elemental powders due to the higher energy in the molten pool and the higher temperature of the molten pool.



Calphad ◽  
1989 ◽  
Vol 13 (1) ◽  
pp. 67-70 ◽  
Author(s):  
Li Rui-Qing
Keyword(s):  


1986 ◽  
Vol 17 (6) ◽  
pp. 1102-1104 ◽  
Author(s):  
E. Jiran ◽  
K. T. Jacob


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