Compositional design and microstructure analysis of Zr-based bulk metallic glasses
(1. School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China; 2. School of Engineering and Centre for Microscopy and Microanalysis, University of Queensland, QLD 4072, Australia )
Abstract: The systematical studies of Zr-based BMGs were summarized in terms of their compositional design and their structural characterization. In particular, several key issues of BMG materials were focused, including initial alloy design and subsequent composition optimization, solidification microstructure characterization and crystallization process specification. The results show that a compositional designing approach is successfully developed and, through extensive microstructure characterization using transmission electron microscopy, several new crystalline phases are discovered in these newly developed Zr-based BMG alloys. Crystallization behavior of Zr-based BMG is also determined based on the microstructure analysis.
Key words: metallic glass; microstructure characterization; solidification; crystallization