Hydrogen microalloying as a viable strategy for enhancing the glass-forming ability of Zr-based bulk metallic glasses. (1st July 2015)

• Record Type: Journal Article
• Authors: Granata, D.; Fischer, E.; Löffler, J.F.
• Is Part Of: Scripta materialia. Volume 103(2015)
• Page Start: 53
• Page End: 56
• Publication Date: 2015-07-01
• Subjects: Bulk metallic glasses -- Glass-forming ability -- Microalloying -- Hydrogen -- Metal processing; Materials -- Periodicals; Metallurgy -- Periodicals; Metalen; Legeringen; Materiaalkunde; Metals, metalworking and machinery industries; Metals; Electronic journals; 620.11
• DOI: 10.1016/j.scriptamat.2015.03.005
• Languages: English
• ISSNs: 1359-6462

Abstract

Graphical abstract: Abstract : The development of bulk metallic glasses (BMGs) with both high critical casting thickness and ductility is a great challenge. In this study we show that the glass-forming ability (GFA) of ductile Zr-rich Zr–Cu–Al BMGs can be increased by processing the alloys under hydrogen-containing atmosphere. After considering various reasons for this GFA enhancement, we attribute it to hydrogen microalloying, which generates a higher packing density. We also discuss the role of applied hydrogen pressure and present implications for future alloy design.