A predicting model for determination of glass-forming compositions in Hf-Cu-Al(Ti, Ni) systems

• Published in: Journal of non-crystalline solids Vol. 613; p. 122380
• Main Authors: Maiorova, A.V., Kulikova, T.V., Bykov, V.A.
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01-08-2023
• Subjects: Bulk metallic glasses; Geometrical factors; Glass-forming ability; Hf-Cu-Al (Ti, Ni) systems; Glass-forming ability; Geometrical factors; Hf-Cu-Al (Ti, Ni) systems; Bulk metallic glasses
• ISSN: 0022-3093; 1873-4812
• DOI: 10.1016/j.jnoncrysol.2023.122380

•The range of Hf-Cu-Al (Ti, Ni) compositions with the best GFA was determined.•The composition Hf54Cu18Ni28, Hf42Cu48Al10 with the maximum critical diameter was identified and Hf23Cu65Ti12 composition as ribbon.•The results obtained open up prospects for the development of reliable theoretical methods of new metallic glasses discovery.
One of the unsolved fundamental problems in the production of bulk metallic glasses (BMGs) is related to the development of a method/model for predicting local areas of amorphization in metallic glasses. Despite decades of intensive research, there are no reliable and physically based methods for predicting the compositions of multicomponent metal alloys with high glass-forming ability. Here, we propose a new model for predicting BMG compositions with approbation on Hf-Cu-Al(Ti,Ni) systems. Using new parameters ΘX−Y(X),ΘX−Y(Y), we predict the areas of formation of glass-forming compositions through search for a minimum of product of PHSS and Г parameters (where, PHSS - product of mixing enthalpy, configurational entropy and mismatch entropy; Г – geometric factor). Also, the proposed model predicts amorphous compositions in metallic systems by analyzing PHSS versus Dmax (maximum critical diameter). As a result, Hf0.23Cu0.65Ti0.12, Hf0.54Cu0.18Ni0.28, Hf0.42Cu0.48Al0.10 were successfully identified as the compositions with the best glass-forming ability (GFA).
Our findings open up prospects for the development of reliable theoretical methods for predicting new metallic glasses.