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Combinatorial measurement of critical cooling rates in aluminum-base metallic glass forming alloys.

ABSTRACT: Direct measurement of critical cooling rates has been challenging and only determined for a minute fraction of the reported metallic glass forming alloys. Here, we report a method that directly measures critical cooling rate of thin film metallic glass forming alloys in a combinatorial fashion. Based on a universal heating architecture using indirect laser heating and a microstructure analysis this method offers itself as a rapid screening technique to quantify glass forming ability. We use this method to identify glass forming alloys and study the composition effect on the critical cooling rate in the Al-Ni-Ge system where we identified Al₅₁Ge₃₅Ni₁₄ as the best glass forming composition with a critical cooling rate of 10⁴ K/s.

SUBMITTER: Liu N

PROVIDER: S-EPMC7887254 | biostudies-literature | 2021 Feb

REPOSITORIES: biostudies-literature

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Combinatorial measurement of critical cooling rates in aluminum-base metallic glass forming alloys.

Liu Naijia N Ma Tianxing T Liao Chaoqun C Liu Guannan G Mota Rodrigo Miguel Ojeda RMO Liu Jingbei J Sohn Sungwoo S Kube Sebastian S Zhao Shaofan S Singer Jonathan P JP Schroers Jan J

Scientific reports 20210216 1

Direct measurement of critical cooling rates has been challenging and only determined for a minute fraction of the reported metallic glass forming alloys. Here, we report a method that directly measures critical cooling rate of thin film metallic glass forming alloys in a combinatorial fashion. Based on a universal heating architecture using indirect laser heating and a microstructure analysis this method offers itself as a rapid screening technique to quantify glass forming ability. We use this ...[more]

PMID: 33594154

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