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Abstract
Zr-based bulk metallic glasses have been attracting tremendous interest of researchers because of their unique combination of mechanical and chemical properties. However, their application is limited as large-scale production is difficult due to the limitation of cooling rate. Recently, additive manufacturing technology has been proposed as a new solution for fabricating bulk metallic glasses without size limitation. In this study, selective laser melting technology was used to prepare Zr60Fe10Cu20Al10 bulk metallic glass. The laser parameters for fabricating full dense amorphous specimens were investigated. The mechanical and corrosion resistance properties of the prepared samples were measured by micro-compression and electrochemical corrosion testing, respectively. Lastly, Zr60Fe10Cu20Al10 bulk metallic glass (BMG) with dispersed nano-crystals was made, and good deformation ability was revealed during micro-compression test. The corrosion resistance decreased a bit due to the crystalline phases. The results provide a promising route for manufacturing large and complex bulk metallic glasses with better mechanical property and acceptable corrosion resistance.
Highlights
In past decades, a variety of Zr-based bulk metallic glasses (BMGs) have been developed because of their high glass forming ability (GFA) [1]
In order to find out the appropriate parameter range to prepare 3-dimentional parts, a preliminary work was done before fabricating the Zr60 Fe10 Cu20 Al10 BMG
The structures of the specimens fabricated by Selective laser melting (SLM) were determined by X-ray diffraction (XRD) using the cross-section of the samples
Summary
A variety of Zr-based bulk metallic glasses (BMGs) have been developed because of their high glass forming ability (GFA) [1]. These Zr-based BMGs show very attractive properties such as ultrahigh strength with a low Young’s modulus and high corrosion resistance [2,3,4]. These superior properties make Zr-based BMGs hold promises for application in various fields.
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