Visualization of Hydrogen Distribution in Tensile-Deformed Al-5%Mg Alloy Investigated by means of Hydrogen Microprint Technique with EBSP Analysis

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  • Horikawa Keitaro
    Department of Mechanical Engineering, Faculty of Engineering, The University of Tokushima
  • Yoshida Kenichi
    Department of Mechanical Engineering, Faculty of Engineering, The University of Tokushima

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  • Visualization of Hydrogen Distribution in Tensile Deformed Al 5パーセント Mg Alloy Investigated by means of Hydrogen Microprint Technique with EBSP Analysis

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Hydrogen distribution in high-purity-based polycrystalline Al-5%Mg alloys prepared by changing the melting atmosphere was visualized by means of hydrogen microprint technique with electron backscattering pattern analysis after a tensile deformation at room temperature. The number of hydrogen atoms observed as silver particles on the slip lines was increased when the applied strain was increased. Hydrogen atom observed on the slip lines was totally increased when the melting atmosphere of the alloys was changed from argon to air. Hydrogen atom was observed at both slip lines and special grain boundaries when an air-melted specimen was deformed. It was shown that hydrogen atom accumulation at grain boundaries varied with the misorientation of grains and the angle to the tensile direction.

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