A criterion for evaluating glass-forming ability of alloys
In: Journal of Applied Physics, Jg. 106 (2009-11-01), S. 094902-94902
Online
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Zugriff:
A criterion defined as θ=(Tx+Tg)/Tl[(Tx−Tg)/Tl]α (where Tx is the onset crystallization temperature, Tg is the glass transition temperature, Tl is liquidus temperature, and α is an exponent) is proposed to evaluate the glass-forming ability of alloy systems. Regression analysis between the logarithm of the critical cooling rate ln Rc and θ yields value of α=0.0728. There exists a fine linear relationship between criterion θ and ln Rc with a coefficient of determination R2=0.942. The obtained relationship can be expressed as: ln Rc=(30.10±0.91)−(27.93±0.97) θ. The comparisons of θ with all other relevant parameters: φ{=Trg[(Tx−Tg)/Tg]0.143}, γ[=Tx/(Tl+Tg)], Trg(=Tg/Tl), β[=TxTg/(Tl−Tx)2], δ[=Tx/(Tl−Tg)] show that this criterion has the best ability for evaluating the GFA of alloys.
Titel: |
A criterion for evaluating glass-forming ability of alloys
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Autor/in / Beteiligte Person: | Zhang, Guo-Hua ; Chou, Kuo-Chih |
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Zeitschrift: | Journal of Applied Physics, Jg. 106 (2009-11-01), S. 094902-94902 |
Veröffentlichung: | AIP Publishing, 2009 |
Medientyp: | unknown |
ISSN: | 1089-7550 (print) ; 0021-8979 (print) |
DOI: | 10.1063/1.3255952 |
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