Journal
PROGRESS IN NATURAL SCIENCE-MATERIALS INTERNATIONAL
Volume 27, Issue 4, Pages 482-486Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.pnsc.2017.08.008
Keywords
Metallic glasses; Glass forming ability; Densely atomic packing; Nanoscale inhomogeneity; Crystallization
Funding
- Shenzhen Science and Technology Innovation Commission [R-IND8701]
- Croucher Foundation (CityU) [9500020]
- National Natural Science Foundation of China [51501090, 51571170]
- Fundamental Research Funds for the Central Universities [30915015103]
- DOE Office of Science [DE-AC02-06CH11357]
Ask authors/readers for more resources
Thermal behaviors and structures of three Zr-based binary glass formers, Zr50Cu50, Zr64Cu36 and Zr64Ni36, were investigated and compared using differential scanning calorimetry (DSC), transmission electron microscopy (TEM), high energy X-ray diffraction (XRD) and small angle X-ray scattering (SAXS). The high energy XRD results show that the bulk glass former Zr50Cu50 has a denser atomic packing efficiency and reduced mediumrange order than those of marginal glass formers Zr64Cu36 and Zr64Ni36. Based on TEM observations for the samples after heat treatment at 10 K above their crystallization onset temperatures, the number density of crystals for Zr50Cu50 was estimated to be 10(23)-10(24) m(-3), which was four-orders higher than that in Zr64Cu36 and Zr64Ni36 metallic glasses. SAXS results indicate that Zr50Cu50 has higher degree of nanoscale inhomogeneities than those in Zr64Cu36 and Zr64Ni36 at as-cast state. The observed multiscale structures are discussed in terms of the phase stability and glass-forming ability of Zr-based binary glass formers.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available