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Title: Rapid Chemical Ordering in Supercooled Liquid Cu46Zr54

Abstract

Evidence for abrupt chemical ordering in a supercooled Cu46Zr54 liquid, obtained from high energy x-ray diffraction in a containerless processing environment, is presented. Relatively sudden changes were observed in the topological and chemical short-range order near 850oC, a temperature significantly below the liquidus and above the glass transition temperatures. A peak in the specific heat was observed with supercooling, with an onset near 850oC, the same temperature as the onset of chemical ordering, and a maximum near 700oC, consistent with the prediction of a molecular dynamics calculation using embedded atom potentials. The dominant short-range order below 850oC is incompatible with that of the primary crystallizing phases. This, and the possible development of strongly bonded, chemically ordered clustersmay explain unlikely bulk metallic glass formation in Cu-Zr and other binary alloys.

Authors:
 [1];  [2];  [2];  [3];  [3];  [4];  [5];  [6];  [6];  [7]; ORCiD logo [7];  [2]
  1. ETH Zurich, Switzerland
  2. Washington University, St. Louis
  3. University of Massachusetts, Amherst
  4. NASA Marshall Space Flight Center, Huntsville, AL
  5. Ames Laboratory
  6. Ames Laboratory and Iowa State University
  7. ORNL
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1009480
DOE Contract Number:  
AC05-00OR22725
Resource Type:
Journal Article
Journal Name:
Physical Review. B, Condensed Matter and Materials Physics
Additional Journal Information:
Journal Volume: 83; Journal Issue: 9; Journal ID: ISSN 1098-0121
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ALLOYS; ATOMS; FORECASTING; GLASS; PROCESSING; SPECIFIC HEAT; TRANSITION TEMPERATURE; X-RAY DIFFRACTION

Citation Formats

Wessels, Victor, Gangopadhyay, Anup, Sahu, K. K., Hyers, R. W., Canepari, S. M., Rogers, J. R., Kramer, Matthew J., Goldman, A. I., Robinson, D., Lee, Jae W., Morris, James R., and Kelton, K. F. Rapid Chemical Ordering in Supercooled Liquid Cu46Zr54. United States: N. p., 2011. Web. doi:10.1103/PhysRevB.83.094116.
Wessels, Victor, Gangopadhyay, Anup, Sahu, K. K., Hyers, R. W., Canepari, S. M., Rogers, J. R., Kramer, Matthew J., Goldman, A. I., Robinson, D., Lee, Jae W., Morris, James R., & Kelton, K. F. Rapid Chemical Ordering in Supercooled Liquid Cu46Zr54. United States. https://doi.org/10.1103/PhysRevB.83.094116
Wessels, Victor, Gangopadhyay, Anup, Sahu, K. K., Hyers, R. W., Canepari, S. M., Rogers, J. R., Kramer, Matthew J., Goldman, A. I., Robinson, D., Lee, Jae W., Morris, James R., and Kelton, K. F. 2011. "Rapid Chemical Ordering in Supercooled Liquid Cu46Zr54". United States. https://doi.org/10.1103/PhysRevB.83.094116.
@article{osti_1009480,
title = {Rapid Chemical Ordering in Supercooled Liquid Cu46Zr54},
author = {Wessels, Victor and Gangopadhyay, Anup and Sahu, K. K. and Hyers, R. W. and Canepari, S. M. and Rogers, J. R. and Kramer, Matthew J. and Goldman, A. I. and Robinson, D. and Lee, Jae W. and Morris, James R. and Kelton, K. F.},
abstractNote = {Evidence for abrupt chemical ordering in a supercooled Cu46Zr54 liquid, obtained from high energy x-ray diffraction in a containerless processing environment, is presented. Relatively sudden changes were observed in the topological and chemical short-range order near 850oC, a temperature significantly below the liquidus and above the glass transition temperatures. A peak in the specific heat was observed with supercooling, with an onset near 850oC, the same temperature as the onset of chemical ordering, and a maximum near 700oC, consistent with the prediction of a molecular dynamics calculation using embedded atom potentials. The dominant short-range order below 850oC is incompatible with that of the primary crystallizing phases. This, and the possible development of strongly bonded, chemically ordered clustersmay explain unlikely bulk metallic glass formation in Cu-Zr and other binary alloys.},
doi = {10.1103/PhysRevB.83.094116},
url = {https://www.osti.gov/biblio/1009480}, journal = {Physical Review. B, Condensed Matter and Materials Physics},
issn = {1098-0121},
number = 9,
volume = 83,
place = {United States},
year = {Tue Mar 01 00:00:00 EST 2011},
month = {Tue Mar 01 00:00:00 EST 2011}
}

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