Search Results - "Nieh, T.G."

Correlation between lattice distortion and friction stress in Ni-based equiatomic alloys by Zhao, Y.Y., Nieh, T.G.

“…Many recent efforts have been made to apply traditional theories for solid solution strengthening to explain the strength increase in concentrated equiatomic…”
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Thermal stability and coarsening of coherent particles in a precipitation-hardened (NiCoFeCr)94Ti2Al4 high-entropy alloy by Zhao, Y.Y., Chen, H.W., Lu, Z.P., Nieh, T.G.

“…In this work, we studied the coarsening of L12 precipitates in a face-centered-cubic (fcc) (NiCoFeCr)94Ti2Al4 high-entropy alloy (HEA) at temperatures between…”
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Friction and wear behavior of a single-phase equiatomic TiZrHfNb high-entropy alloy studied using a nanoscratch technique by Ye, Y.X., Liu, C.Z., Wang, H., Nieh, T.G.

“…In this study, friction and wear of a body-centered cubic equiatomic TiZrHfNb high-entropy (HE) alloy were investigated using a nanoscratch method. Scratch…”
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Incipient plasticity and dislocation nucleation of FeCoCrNiMn high-entropy alloy by Zhu, C., Lu, Z.P., Nieh, T.G.

“…Instrumented nanoindentation was conducted on a FeCoCrMnNi high-entropy alloy with a single face-centered cubic structure to characterize the nature of…”
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Grain growth and the Hall–Petch relationship in a high-entropy FeCrNiCoMn alloy by Liu, W.H., Wu, Y., He, J.Y., Nieh, T.G., Lu, Z.P.

“…A high-entropy FeCoNiCrMn alloy with a single face-centered cubic phase was synthesized and subsequently annealed at different temperatures to systematically…”
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Controlled formation of coherent cuboidal nanoprecipitates in body-centered cubic high-entropy alloys based on Al2(Ni,Co,Fe,Cr)14 compositions by Ma, Y., Wang, Q., Jiang, B.B., Li, C.L., Hao, J.M., Li, X.N., Dong, C., Nieh, T.G.

“…Microstructures and mechanical properties of Al-Ni-Co-Fe-Cr high-entropy alloys (HEAs) were investigated by systematically varying transition metals instead of…”
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Transmission electron microscopy characterization of dislocation structure in a face-centered cubic high-entropy alloy Al0.1CoCrFeNi by Xu, X.D., Liu, P., Tang, Z., Hirata, A., Song, S.X., Nieh, T.G., Liaw, P.K., Liu, C.T., Chen, M.W.

“…Structural characterization of dislocations and dislocation reactions in a face-centered cubic high entropy alloy was conducted using the state-of-the-art…”
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Effects of Al addition on structural evolution and tensile properties of the FeCoNiCrMn high-entropy alloy system by He, J.Y., Liu, W.H., Wang, H., Wu, Y., Liu, X.J., Nieh, T.G., Lu, Z.P.

“…A series of six-component (FeCoNiCrMn)100−xAlx (x=0–20at.%) high-entropy alloys (HEAs) was synthesized to investigate the alloying effect of Al on the…”
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Precipitation behavior and its effects on tensile properties of FeCoNiCr high-entropy alloys by He, J.Y., Wang, H., Wu, Y., Liu, X.J., Mao, H.H., Nieh, T.G., Lu, Z.P.

“…In this work, we present a systematic study on the precipitation behavior and mechanical properties of a FeCoNiCr-based high-entropy alloy alloyed with dilute…”
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Consideration of kinetics on intermetallics formation in solid-solution high entropy alloys by Chou, T.H., Huang, J.C., Yang, C.H., Lin, S.K., Nieh, T.G.

“…There are overwhelming experimental observations indicating intermetallic (IM) phase formed in the intermediate temperatures in high entropy alloys. In this…”
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Steady state flow of the FeCoNiCrMn high entropy alloy at elevated temperatures by He, J.Y., Zhu, C., Zhou, D.Q., Liu, W.H., Nieh, T.G., Lu, Z.P.

“…Steady state flow behavior of the FeCoNiCrMn high-entropy alloy at temperatures ranging from 1023 to 1123 K was systematically characterized. It was found that…”
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Grain-boundary strengthening in nanocrystalline chromium and the Hall–Petch coefficient of body-centered cubic metals by Wu, D., Zhang, Junyan, Huang, J.C., Bei, H., Nieh, T.G.

“…Nanocrystalline Cr (nc-Cr) was synthesized by electrodeposition. Samples with various grain sizes (19–57nm) were prepared by annealing the as-deposited sample…”
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Nanoscale phase separation in a fcc-based CoCrCuFeNiAl0.5 high-entropy alloy by Xu, X.D., Liu, P., Guo, S., Hirata, A., Fujita, T., Nieh, T.G., Liu, C.T., Chen, M.W.

“…Nano-scale phase separation is reported in a nominal single-phase, high-entropy alloy (HEA), which was characterized using scanning transmission electron…”
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On the source of plastic flow in metallic glasses: Concepts and models by Wang, W.H., Yang, Y., Nieh, T.G., Liu, C.T.

“…We briefly review the state-of-the-art study on plastic flow in metallic glasses. Especially, we survey the features and behaviors, percolation, and response…”
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High-temperature plastic flow of a precipitation-hardened FeCoNiCr high entropy alloy by He, J.Y., Wang, H., Wu, Y., Liu, X.J., Nieh, T.G., Lu, Z.P.

“…In this work, we systematically investigated flow behavior of a high entropy alloy (HEA) strengthened by coherent γ′ precipitates in the temperature range of…”
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Direct measurements of shear band propagation in metallic glasses – An overview by Song, S.X., Nieh, T.G.

“…A series of experimental efforts have recently made in an attempt to gain understanding of shear band propagation in metallic glasses. It was found that…”
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Incipient plasticity and dislocation nucleation in body-centered cubic chromium by Wu, D., Nieh, T.G.

“…In this study, we conducted nanoindentation tests to explore the incipient plasticity (or onset of yielding) in a fully annealed coarse-grained Cr at loading…”
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Flow serration and shear-band viscosity during inhomogeneous deformation of a Zr-based bulk metallic glass by Song, S.X., Nieh, T.G.

“…Uniaxial compressive behavior of Zr 64.13Cu 15.75Ni 10.12Al 10 bulk metallic glass at room temperature was characterized with high-sensitivity strain gauges…”
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Cellular structure and energy absorption of Al Cu alloy foams fabricated via a two-step foaming method by Wang, H., Zhu, D.F., Hou, S., Yang, D.H., Nieh, T.G., Lu, Z.P.

“…Two-step foaming (TSF) method is one of cost-effective ways to prepare shaped, closed-cell Al alloy foams with a thick surface layer, which can provide good…”
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Creep of nanocrystalline nickel: A direct comparison between uniaxial and nanoindentation creep by Wang, C.L., Lai, Y.H., Huang, J.C., Nieh, T.G.

“…Uniaxial and nanoindentation creeps were conducted on nanocrystalline nickel with an as-deposited grain size of 14 nm at 398 K and the results were directly…”
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