INTERACTION OF COMPONENTS IN Cu–Fe GLASS-FORMING MELTS WITH TITANIUM, ZIRCONIUM AND HAFNIUM.
III. MODELING OF METASTABLE PHASE TRANSFORMATIONS WITH PARTICIPATION OF LIQUID PHASE

P.G.Agraval,
 
L.A.Dreval,
 
M.A.Turchanin
 

Powder Metallurgy - Kiev: Frantsevich Institute for Problems of Materials Science NASU, 2017, #07/08
http://www.materials.kiev.ua/article/2413

Abstract

Theoretical bases for calculation of metastable phase transformations with participation of supercooled melts, such as immiscibility and amorphization, are considered. A dataset of the model parameters for the thermodynamic properties of the phases of Cu–Fe–(Ti, Zr, Hf) systems is presented for performing of corresponding calculations within the framework of the CALPHAD method. The diagrams of metastable phase transformations with participation of supercooled liquid alloys and terminal solid solutions are calculated. The composition regions of metastable immiscibility of supercooled ternary liquid alloys are presented. The composition regions for producing of rapidly quenched amorphous Cu–Fe–(Ti, Zr, Hf) alloys are theoretically estimated. The possibility of producing of ternary immiscible rapidly quenched amorphous alloys in the region of compositions with xMe ≈ 0.1–0.2 has been predicted. Bulk amorphous alloys are expected to be produced in the range of compositions with xMe ≈ 0.3–0.6.


CALPHAD-METHOD, IMMISCIBLE RAPIDLY QUENCHED AMORPHOUS ALLOYS, RAPIDLY QUENCHED AND BULK AMORPHOUS ALLOYS, СПЛАВЫ ЖЕЛЕЗА С ТИТАНОМ, ЦИРКОНИЕМ И ГАФНИЕМ