We report results of uniaxial compression experiments on single-crystalline Cu nanopillars with nonzero initial dislocation densities produced without focused ion beam (FIB). Remarkably, we find the same power-law size-driven strengthening as FIB-fabricated face-centered cubic micropillars. TEM analysis reveals that initial dislocation density in our FIB-less pillars and those produced by FIB are on the order of 10(14) m(-2) suggesting that mechanical response of nanoscale crystals is a stronger function of initial microstructure than of size regardless of fabrication method.
机构:
Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USAOak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA
Bei, H.
Shim, S.
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Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA
Univ Tennessee, Dept Mat Sci & Engn, Knoxville, TN 37996 USAOak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA
Shim, S.
Pharr, G. M.
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机构:
Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA
Univ Tennessee, Dept Mat Sci & Engn, Knoxville, TN 37996 USAOak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA
Pharr, G. M.
George, E. P.
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机构:
Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA
Univ Tennessee, Dept Mat Sci & Engn, Knoxville, TN 37996 USAOak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA
机构:
Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USAOak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA
Bei, H.
Shim, S.
论文数: 0引用数: 0
h-index: 0
机构:
Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA
Univ Tennessee, Dept Mat Sci & Engn, Knoxville, TN 37996 USAOak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA
Shim, S.
Pharr, G. M.
论文数: 0引用数: 0
h-index: 0
机构:
Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA
Univ Tennessee, Dept Mat Sci & Engn, Knoxville, TN 37996 USAOak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA
Pharr, G. M.
George, E. P.
论文数: 0引用数: 0
h-index: 0
机构:
Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA
Univ Tennessee, Dept Mat Sci & Engn, Knoxville, TN 37996 USAOak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA