Micropatterning kinetics of different glass-forming systems investigated by thermoplastic net-shaping. (August 2017)

• Record Type: Journal Article
• Authors: Sarac, Baran; Bera, Supriya; Spieckermann, Florian; Balakin, Sascha; Stoica, Mihai; Calin, Mariana; Eckert, Jürgen
• Is Part Of: Scripta materialia. Number 137(2017)
• Page Start: 127
• Page End: 131
• Publication Date: 2017-08
• Subjects: Thermoplastic net-shaping -- Glass-forming ability -- Formability kinetics -- Thermophysical properties -- Supercooled liquid fragility; Materials -- Periodicals; Metallurgy -- Periodicals; Metalen; Legeringen; Materiaalkunde; Metals, metalworking and machinery industries; Metals; Electronic journals; 620.11
• DOI: 10.1016/j.scriptamat.2017.02.038
• Languages: English
• ISSNs: 1359-6462

Abstract

Abstract: The formability difference between good and marginal glass-forming systems is investigated by micro-surface patterning of hierarchical features using thermoplastic net-shaping (TPN). For each alloy, a remarkable change in the flow behaviour is observed as the applied force along with the pressing time and temperature are optimized. The flow kinetics of glassy alloys with different glass-forming abilities is best described by the formability parameter S, which is defined by the ratio of the width of the supercooled to undercooled liquid region ( T l − T g )/( T x − T g ). Reproducible micro-engineered surfaces with high uniformity can be established by controlled TPN processing. Graphical abstract: