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Exploring the phase space of multi-principal-element alloys and predicting the formation of bulk metallic glasses

M. Gabski, M. Peterlechner, G. Wilde

Entropy, 22, 292, (2020)

DOI: 10.3390/e22030292

Download: BibTEX

Multi-principal-element alloys share a set of thermodynamic and structural parameters that, in their range of adopted values, correlate to the tendency of the alloys to assume a solid solution, whether as a crystalline or an amorphous phase. Based on empirical correlations, this work presents a computational method for the prediction of possible glass-forming compositions for a chosen alloys system as well as the calculation of their critical cooling rates. The obtained results compare well to experimental data for Pd-Ni-P, micro-alloyed Pd-Ni-P, Cu-Mg-Ca, and Cu-Zr-Ti. Furthermore, a random-number-generator-based algorithm is employed to explore glass-forming candidate alloys with a minimum critical cooling rate, reducing the number of datapoints necessary to find suitable glass-forming compositions. A comparison with experimental results for the quaternary Ti-Zr-Cu-Ni system shows a promising overlap of calculation and experiment, implying that it is a reasonable method to find candidates for glass-forming alloys with a sufficiently low critical cooling rate to allow the formation of bulk metallic glasses.

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{"type":"article", "name":"m.gabski20203", "author":"M. Gabski and M. Peterlechner and G. Wilde", "title":"Exploring the phase space of multiprincipalelement alloys and predicting the formation of bulk metallic glasses", "journal":"Entropy", "volume":"22", "OPTnumber":"3", "OPTmonth":"3", "year":"2020", "OPTpages":"292", "OPTnote":"", "OPTkey":"metallic glasses; glass formation; critical cooling rate", "DOI":"10.3390/e22030292"}
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