TY - JOUR

T1 - Solid-solid phase transitions via melting in metals

AU - Pogatscher, Stefan

AU - Leutenegger, D.

AU - Schawe, Jürgen E. K.

AU - Uggowitzer, Peter

AU - Löffler, Jörg F.

PY - 2016/4/22

Y1 - 2016/4/22

N2 - Observing solid-solid phase transitions in-situ with sufficient temporal and spatial resolution is a great challenge, and is often only possible via computer simulations or in model systems. Recently, a study of polymeric colloidal particles, where the particles mimic atoms, revealed an intermediate liquid state in the transition from one solid to another. While not yet observed there, this finding suggests that such phenomena may also occur in metals and alloys. Here we present experimental evidence for a solid-solid transition via the formation of a metastable liquid in a 'real' atomic system. We observe this transition in a bulk glass-forming metallic system in-situ using fast differential scanning calorimetry. We investigate the corresponding transformation kinetics and discuss the underlying thermodynamics. The mechanism is likely to be a feature of many metallic glasses and metals in general, and may provide further insight into phase transition theory.

AB - Observing solid-solid phase transitions in-situ with sufficient temporal and spatial resolution is a great challenge, and is often only possible via computer simulations or in model systems. Recently, a study of polymeric colloidal particles, where the particles mimic atoms, revealed an intermediate liquid state in the transition from one solid to another. While not yet observed there, this finding suggests that such phenomena may also occur in metals and alloys. Here we present experimental evidence for a solid-solid transition via the formation of a metastable liquid in a 'real' atomic system. We observe this transition in a bulk glass-forming metallic system in-situ using fast differential scanning calorimetry. We investigate the corresponding transformation kinetics and discuss the underlying thermodynamics. The mechanism is likely to be a feature of many metallic glasses and metals in general, and may provide further insight into phase transition theory.

UR - http://www.scopus.com/inward/record.url?scp=84966351813&partnerID=8YFLogxK

U2 - 10.1038/ncomms11113

DO - 10.1038/ncomms11113

M3 - Article

AN - SCOPUS:84966351813

VL - 7.2016

JO - Nature Communications

JF - Nature Communications

SN - 2041-1723

M1 - 11113

ER -