Investigation of phase competition in the Ni-Al system at the early stages of nucleation

О. М. Римар

Abstract


The paper presents a computer model to test the hypothesis of the possibility of a metastable contact melting using the CALPHAD approach. Сurves of the Gibbs energy versus nickel concentration were constructed. Based on the assumption that in the early stages of nucleation a kinetic suppression of stable intermetallic phases is possible, the metastable phase diagram is constructed. The kinetics of growth of the liquid layer of nickel-aluminum solution is investigated.


Keywords


phase competition; contact melting; СALPHAD; metastable phase diagram

References


1. Huang W., Chang Y. A. A thermodynamic analysis of the Ni-Al system // Intermetallics. – 1998. – V. 6. – P. 487- 498.
2. Dinsdale T. Sgte data for pure elements // Calphad. – 1991. – V. 15. – P. 317 425.
3. Rogachev A. S., Vadchenkova S. G., Baras F., Politano O., Rouvimiv S., Sachkova N. V., Mukasyan A. S. Structure evolution and reaction mechanism in the Ni/Al reactive multilayer nanofoils // Acta Materialia. – 2014. – V. 66. – P. 86-96.
4. Гуров К. П., Карташкин Б. А., Угасте Ю. Э. Взаимная диффузия в многофазных металлических системах. – М: Наука, 1981. – 352 с.


Full Text: PDF (Українська)
Archive
2013 16
2014 16
2015 16
2016 1
2017 1
2018 1
2019

1

User

Language

Journal Content

Browse