Advances in Materials

Volume 7, Issue 2, June 2018

  • High-Strength Geopolymer Concrete- Properties, Advantages and Challenges

    Kamal Neupane, Des Chalmers, Paul Kidd

    Issue: Volume 7, Issue 2, June 2018
    Pages: 15-25
    Received: May 15, 2018
    Accepted: Jun. 01, 2018
    Published: Jun. 25, 2018
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    Abstract: Geopolymer is a noble material, made from reaction between aluminosilicate compounds and alkali solution which owns a good binding property. In last decades, lots of research and development works have been carried out globally to investigate the engineering, thermal, micro-structural and durability properties of geopolymer concrete as a sustainabl... Show More
  • Characterization of A Novel FR4/AlN Printed Circuit Board of High Thermal Conductivity

    Diancheng Qin, Yonglong Xiao, Kewei Liang

    Issue: Volume 7, Issue 2, June 2018
    Pages: 26-33
    Received: May 14, 2018
    Accepted: Jun. 06, 2018
    Published: Jun. 29, 2018
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    Abstract: High thermally conductive cuboid aluminum nitride block was used as reinforcement material to fill the FR4 matrix for the fabrication of a novel FR4/AlN PCB (Printed Circuit Board) with high thermal conductivity. This novel PCB was subjected to a thermal shock test of 1500 cycles from -40°C keeping 30 minutes to 125°C keeping 30 minutes during 1000... Show More
  • Simulation for Texture Formation of Both Face-Centered-Cubic Metals and Body-Centered-Cubic Ones Based on Rotational Symmetry among Principal Axes

    Hiroaki Masui

    Issue: Volume 7, Issue 2, June 2018
    Pages: 34-43
    Received: May 10, 2018
    Accepted: May 30, 2018
    Published: Jul. 11, 2018
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    Abstract: Based on the rotational symmetry of the principal axes of X [100], Y [010] and Z [001], in fcc metal 24 possible combinations of the five slips on {111} planes on <110> direction while in bcc metal 72 possible combinations of the five slips on {110} planes on <111> direction by intersection of two kinds of {110} planes from the three ones composed of {110}, ... Show More
  • Effect of Pressure on Solidification Process and Mechanical Properties During Semi-Solid Casting by Computational Fluid Dynamics (CFD)

    Nguyen Hong Hai, Pham Quang

    Issue: Volume 7, Issue 2, June 2018
    Pages: 44-49
    Received: Jun. 17, 2018
    Accepted: Jul. 03, 2018
    Published: Jul. 31, 2018
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    Abstract: This paper focused on the development of Computational Fluid Dynamics (CFD) by a mathematical model based on the control volume method, which would enable efficient simulation of the semi-solid processing of complex industrial casting parts. Theoretical basis of the numerical simulation was briefly introduced. The latent heat was incorporated using... Show More
  • Mechanical and Reaction Properties of PTFE/Al/MnO2 Reactive Materials at Different Strain Rates

    Junyi Huang, Xiang Fang, Yuchun Li, Jiaxiang Wu, Jiaxing Song

    Issue: Volume 7, Issue 2, June 2018
    Pages: 50-57
    Received: Aug. 09, 2018
    Accepted:
    Published: Aug. 13, 2018
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    Abstract: The mechanical responses of the PTFE/Al/MnO2 reactive material in the strain rate range of 10-3~4×103s-1 were studied by a universal testing machine and split Hopkinson pressure bar (SHPB) system, and the microstructure of PTFE/Al/MnO2 specimen was observed by Scanning Electron Microscope (SEM). Meanwhile, a standard drop-weight apparatus was used ... Show More
  • As-cast Microstructures and Mechanical Properties of Mg-5Y-2Nd-xSm-0.5Zr (x= 0, 1, 3, 5) Magnesium Alloys

    Gui Yunwei, Li Quanan, Chen Xiaoya, Li Zhitao

    Issue: Volume 7, Issue 2, June 2018
    Pages: 58-63
    Received: Aug. 09, 2018
    Accepted:
    Published: Aug. 13, 2018
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    Abstract: The microstructures and mechanical properties of the as-cast Mg-5Y-2Nd-xSm-0.5Zr (x= 0, 1, 3, 5) alloys have been investigated by optical microscope (OM), scanning electron microscopy (SEM), energy dispersive spectrometer (EDS) analysis, transmission electron microscopy (TEM), X-ray diffraction (XRD) and mechanical tensile test. The results show th... Show More