Tensile behavior of nanocrystalline copper

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Description

High density nanocrystalline copper produced by inert gas condensation was tested in tension. Displacements were measured using foil strain gauges, which greatly improved the accuracy of the strain data. The Young`s modulus of nanocrystalline copper was found to be consistent with that of coarse-grained copper. Total elongations of {approx} 1% were observed in samples with grain sizes less than 50 nm, while a sample with a grain size of 110 nm exhibited more than 10% elongation, perhaps signifying a change to a dislocation-based deformation mechanism in the larger-grained material. In addition, tensile tests were performed as a function of strain ... continued below

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9 p.

Creation Information

Sanders, P. G.; Weertman, J. R. & Eastman, J. A. November 1995.

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This report is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided by UNT Libraries Government Documents Department to Digital Library, a digital repository hosted by the UNT Libraries. It has been viewed 28 times . More information about this report can be viewed below.

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  • Sanders, P. G.
  • Weertman, J. R. Northwestern Univ., Evanston, IL (United States). Dept. of Materials Science and Engineering
  • Eastman, J. A. Northwestern Univ., Evanston, IL (United States). Dept. of Materials Science and Engineering

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Description

High density nanocrystalline copper produced by inert gas condensation was tested in tension. Displacements were measured using foil strain gauges, which greatly improved the accuracy of the strain data. The Young`s modulus of nanocrystalline copper was found to be consistent with that of coarse-grained copper. Total elongations of {approx} 1% were observed in samples with grain sizes less than 50 nm, while a sample with a grain size of 110 nm exhibited more than 10% elongation, perhaps signifying a change to a dislocation-based deformation mechanism in the larger-grained material. In addition, tensile tests were performed as a function of strain rate, with a possible trend of decreased strength and increased elongation as the strain rate was decreased.

Physical Description

9 p.

Notes

OSTI as DE96005217

Source

  • Materials Week `95, Cleveland, OH (United States), 29 Oct - 2 Nov 1995

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  • Other: DE96005217
  • Report No.: ANL/MSD/CP--86112
  • Report No.: CONF-951026--10
  • Grant Number: FG02-86ER45229;W-31109-ENG-38
  • DOI: 10.2172/201763 | External Link
  • Office of Scientific & Technical Information Report Number: 201763
  • Archival Resource Key: ark:/67531/metadc668453

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Creation Date

  • November 1995

Added to The UNT Digital Library

  • June 29, 2015, 9:42 p.m.

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  • Dec. 15, 2015, 6:50 p.m.

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Sanders, P. G.; Weertman, J. R. & Eastman, J. A. Tensile behavior of nanocrystalline copper, report, November 1995; Illinois. (digital.library.unt.edu/ark:/67531/metadc668453/: accessed September 19, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.