Journal
INTERMETALLICS
Volume 121, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.intermet.2020.106764
Keywords
Rejuvenation; Structural relaxation; Pair distribution function; Short-range ordering; Nanoindentation
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Funding
- Ames Laboratory the U.S. Department of Energy, Office of Science, Basic Energy Sciences, Materials Science and Engineering Division
- U.S. Department of Energy [DE-AC02-07CH11358]
- National Key Research and Development Program [2017YFA0403404]
- US Department of Energy, Office of Science, Office of Basic Energy Sciences [DE-AC02-06CH11357]
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Relaxation behaviors of highly rejuvenated Zr50Cu40Al10 bulk metallic glass was investigated using synchrotron X-ray scattering coupled with differential scanning calorimetry. The relaxation of rejuvenated volume is found to correspond to a marked exothermic event prior to the glass transition. High-energy synchrotron X-ray measurements of the structure factor show that annihilation of rejuvenated volume correspond to a sharpening of the scattering peaks. The calculated reduced pair distribution function suggests that the atomic re-arrangement in the second shell are largely responsible for the reduction in the free volume and decrease in full-width at half-maximum of the Total Structure Factor observed during structural relaxation. Mechanical properties in the highly rejuvenated metallic glass were evaluated as a function of annealing temperature.
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