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  1. No Access

    Article

    Microstructural Evolution and the Precipitation Behavior in X90 Linepipe Steel During Isothermal Processing

    Thermomechanical controlled processing of 560-MPa (X90) linepipe steel was simulated in the laboratory using a thermomechanical simulator to study the microstructural evolution and precipitation behavior durin...

    Y. Tian, H. T. Wang, Z. D. Wang… in Journal of Materials Engineering and Perfo… (2018)

  2. No Access

    Article

    The Microstructure Evolution of Dual-Phase Pipeline Steel with Plastic Deformation at Different Strain Rates

    Tensile properties of the high-deformability dual-phase ferrite-bainite X70 pipeline steel have been investigated at room temperature under the strain rates of 2.5 × 10−5, 1.25 × 10−4, 2.5 × 10−3, and 1.25 × 10−2

    L. K. Ji, T. Xu, J. M. Zhang, H. T. Wang… in Journal of Materials Engineering and Perfo… (2017)

  3. No Access

    Article

    Determination of Stress Intensity Factor K I for a Three-Dimensional Crack Front by the Caustic Method

    In this paper, an experimental technique to determine the stress intensity factor (SIF) K I for a three-dimensional crack front using the caustic method...

    L. Shang, D. F. Wu, Y. Pu, H. T. Wang in Experimental Techniques (2016)

  4. No Access

    Article

    Influence of Dual-Phase Microstructures on the Properties of High Strength Grade Line Pipes

    The influence of dual-phase microstructures on mechanical properties of X70, X80, and X90 line pipes is investigated. It is found that the line pipes with dual-phase microstructures possess both larger unifor...

    L. K. Ji, H. L. Li, H. T. Wang, J. M. Zhang… in Journal of Materials Engineering and Perfo… (2014)

  5. No Access

    Article

    In-Situ Diagnostics of Diamond CVD

    The deposition of diamond, a metastable crystalline form of carbon, from low pressure gases poses intriguing questions about the mechanisms of growth. Tunable IR Diode Laser Absorption Spectroscopy, Laser Mult...

    J. E. Butler, F. G. Celii, P. E. Pehrsson, H. -t. Wang… in MRS Online Proceedings Library (2011)

  6. No Access

    Article

    Optical and Electrical Characterization of Annealed Silicon-implanted GaN

    In this paper, we investigate the effect of post-implant annealing on the optical and electrical properties of Si-implanted GaN films. Results from several measurement techniques including room temperature pho...

    H. T. Wang, L. S. Tan, E. F. Chor in MRS Online Proceedings Library (2011)

  7. No Access

    Article

    Influence of Spray Materials and Their Surface Oxidation on the Critical Velocity in Cold Spraying

    The critical velocity is an important parameter in cold spraying, which determines the deposition efficiency under a given spray condition. The critical velocity depends not only on materials types, but also o...

    C.-J. Li, H.-T. Wang, Q. Zhang, G.-J. Yang, W.-Y. Li… in Journal of Thermal Spray Technology (2010)

  8. No Access

    Article

    ZnO and Related Materials for Sensors and Light-Emitting Diodes

    ZnO is an attractive material for ultraviolet (UV) light emitters and detectors, and transparent thin-film transistors. It is also readily synthesized in the form of nanostructures. In this paper we discuss th...

    S.J. Pearton, W.T. Lim, J.S. Wright, L.C. Tien, H.S. Kim… in Journal of Electronic Materials (2008)

  9. No Access

    Article

    Role of Gate Oxide in AlGaN/GaN High-Electron-Mobility Transistor pH Sensors

    We report on a comparison of different gate oxides for AlGaN/GaN high-electron-mobility transistor (HEMT) pH sensors. The HEMTs show a linear increase in drain-source current as the pH of the electrolyte solut...

    B.S. Kang, H.T. Wang, F. Ren, M. Hlad, B.P. Gila… in Journal of Electronic Materials (2008)

  10. No Access

    Article

    Development of Thin Film and Nanorod ZnO-Based LEDs and Sensors

    The development of new etching and contact metallurgies for the ZnO/ZnMgO/ZnCdO materials system and various approaches for realizing ZnO LEDs are reviewed. ZnO nanorod MOSFETs and pH sensors have been demonst...

    Stephen J. Pearton, L. C. Tien, H. S. Kim, D. P. Norton… in MRS Online Proceedings Library (2007)