The solidification of Al–Pd–Mn studied by high-energy X-ray diffraction from electrostatically levitated samples

Quirinale, D. G.; Kreyßig, A.; Saunders, Scott M.; Messina, D.; Straszheim, Warren E.; Canfield, Paul C.; Kramer, M. J.; Goldman, A. I.

doi:10.1515/zkri-2016-2037

Cited by 1 publication

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References 46 publications

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“…A limited number of stable QCs, such as high- and low-temperature QCs in Al–Pd–Mn ( 52 , 53 ) and Ti–Zr–Ni ( 14 ), have been discovered in the past and placed in equilibrium phase diagrams. This has, however, not yet been possible for metastable QCs ( 15 ) due to the experimental difficulties of measuring their thermodynamic quantities, such as melting temperature and enthalpy of fusion.…”

Section: Discussionmentioning

confidence: 99%

Metastable quasicrystal-induced nucleation in a bulk glass-forming liquid

Kurtuldu

Shamlaye

Löffler

2018

Proc. Natl. Acad. Sci. U.S.A.

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SignificanceA model alloy, Mg69Zn27Yb4, concurrently forms bulk metallic glass, metastable quasicrystals (QCs), and crystalline approximant phases from the melt. We demonstrate that a transient QC phase nucleates first from the melt and subsequently transforms into an equilibrium approximant phase. This nucleation path is likely to be a general mechanism in metastable QC-forming systems. We observed a metastable-to-stable phase transformation when we deployed fast differential scanning calorimetry using the experimental strategy of interrupted cooling after the onset of crystallization followed by heating at ultrafast rates to “up-quench” the previously frozen structure. This strategy can yield the discovery of hidden transient phases that are key to understanding the crystallization behavior in metallic systems, polymers, biological solutions, and pharmaceutical substances.

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