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Title: Processing of novel pseudomorphic Cu–Mo hierarchies in thin films

Abstract

A new processing route has been discovered through which far-from-equilibrium, metastable architectures with unprecedented properties are synthesized. This novel architecture contains many orders of hierarchy with multiple concentration modulation wavelengths. At one length scale, the matrix is comprised of lateral modulations of BCC Mo and pseudomorphic BCC Cu with a wavelength of 10 nm. FCC, Cu-rich islands of approximate 250 nm diameter are woven in-between the Mo-Cu matrix and contain ordered arrays of pseudomorphic, FCC, Mo-rich, coherent precipitates of approximately 1.0 nm diameter spacing. The resulting material exhibits unprecedented mechanical behavior of extensive plastic deformability at room temperature.

Authors:
 [1];  [1];  [2]; ORCiD logo [3];  [4];  [1]
+ Show Author Affiliations
  1. Department of Materials Science and Engineering, University of Michigan, Ann Arbor, MI, USA
  2. Center for Integrated Nanotechnologies, Los Alamos National Laboratory, Los Alamos, NM, USA
  3. Department of Materials Science and Engineering, Texas A&,M University, College Station, TX, USA, Department of Mechanical Engineering, Texas A&,M University, College Station, TX, USA
  4. Department of Materials Science and Engineering, Texas A&,M University, College Station, TX, USA
Publication Date:
Research Org.:
Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1483334
Alternate Identifier(s):
OSTI ID: 1571606
Report Number(s):
LA-UR-19-29913
Journal ID: ISSN 2166-3831; 1
Grant/Contract Number:  
DMREF-1534534; AC52-06NA25396; NA0003525; DMR-0723032; 89233218CNA000001
Resource Type:
Published Article
Journal Name:
Materials Research Letters
Additional Journal Information:
Journal Name: Materials Research Letters Journal Volume: 7 Journal Issue: 1; Journal ID: ISSN 2166-3831
Publisher:
Taylor and Francis
Country of Publication:
United Kingdom
Language:
English
Subject:
36 MATERIALS SCIENCE; Material Science; Synthesis; hierarchical; pseudormorphic; self-assembly; immiscible; high-strength; deformable

Citation Formats

Derby, Benjamin, Cui, Yuchi, Baldwin, JonKevin, Arróyave, Raymundo, Demkowicz, Michael J., and Misra, Amit. Processing of novel pseudomorphic Cu–Mo hierarchies in thin films. United Kingdom: N. p., 2018. Web. doi:10.1080/21663831.2018.1546237.
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Derby, Benjamin, Cui, Yuchi, Baldwin, JonKevin, Arróyave, Raymundo, Demkowicz, Michael J., & Misra, Amit. Processing of novel pseudomorphic Cu–Mo hierarchies in thin films. United Kingdom. https://doi.org/10.1080/21663831.2018.1546237
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Derby, Benjamin, Cui, Yuchi, Baldwin, JonKevin, Arróyave, Raymundo, Demkowicz, Michael J., and Misra, Amit. Fri . "Processing of novel pseudomorphic Cu–Mo hierarchies in thin films". United Kingdom. https://doi.org/10.1080/21663831.2018.1546237.
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@article{osti_1483334,
title = {Processing of novel pseudomorphic Cu–Mo hierarchies in thin films},
author = {Derby, Benjamin and Cui, Yuchi and Baldwin, JonKevin and Arróyave, Raymundo and Demkowicz, Michael J. and Misra, Amit},
abstractNote = {A new processing route has been discovered through which far-from-equilibrium, metastable architectures with unprecedented properties are synthesized. This novel architecture contains many orders of hierarchy with multiple concentration modulation wavelengths. At one length scale, the matrix is comprised of lateral modulations of BCC Mo and pseudomorphic BCC Cu with a wavelength of 10 nm. FCC, Cu-rich islands of approximate 250 nm diameter are woven in-between the Mo-Cu matrix and contain ordered arrays of pseudomorphic, FCC, Mo-rich, coherent precipitates of approximately 1.0 nm diameter spacing. The resulting material exhibits unprecedented mechanical behavior of extensive plastic deformability at room temperature.},
doi = {10.1080/21663831.2018.1546237},
journal = {Materials Research Letters},
number = 1,
volume = 7,
place = {United Kingdom},
year = {Fri Nov 16 00:00:00 EST 2018},
month = {Fri Nov 16 00:00:00 EST 2018}
}
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Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
https://doi.org/10.1080/21663831.2018.1546237
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Citation Metrics:
Cited by: 23 works
Citation information provided by
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Figures / Tables:

Figure 1 Figure 1: High-angle annular dark-field scanning transmission electron microscopy (HAADF-STEM) images taken along the< −111 > direction of FCC Cu. The high-level view of the sample in (a) displays the hierarchical structure of the sample throughout the thickness and length of the film. Direction of growth is from bottom tomore » top in the image. Scale bar, 1 micron. At one length scale in (b-d), the single crystal Cu grains contain FCC Mo dispersoids arranged in an FCC superlattice as indicated in the power spectrum (c) taken from (d); indexed down the FCC < −111 > zone axis. The energy dispersive X-ray spectrum map in (b) shows a concentration of Mo corresponding to the brighter spots in the STEM image. Scale bars, 1 nm (b), 10 nm (d). Another length scale is presented in (e–f) where Cu and Mo are constrained to a coherent BCC Mo-Cu solid solution and exhibit lateral concentration modulations with respect to the film-substrate interface. (e) shows an SADP from the bicontinuous region and only BCCMo frequencies are present, but Cu–Mo concentration modulations are observed in the EDXS mapping in (f). Scale bar, 50 nm.« less
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