Crystallographic Analysis of Hydrogen Embrittlement Behavior in Aluminum Alloy Using Diffraction Contrast Tomography

Kyosuke Hirayama, Hiroyuki Toda, Takafumi Suzuki, Masayuki Uesugi, Akihisa Takeuchi, Wolfgang Ludwig

研究成果: ジャーナルへの寄稿学術誌査読

抄録

Crystallographic assessment of the hydrogen embrittlement behavior of AlZnMg alloy was performed by means of a technique combining fracture trajectory analysis and synchrotron X-ray diffraction contrast tomography. The 3D microstructure reconstructed using diffraction contrast tomography contained 119 grains. Fracture surfaces revealing intergranular fracture, ductile fracture, and quasi-cleavage fracture were observed in the alloy. While the intergranular crack initiated at a grain boundary with high grain boundary energy and a high angle between the grain boundary plane and loading direction, the crack propagation itself was not observed to be sensitive to these two parameters. The quasi-cleavage fracture surfaces were not characterized by any specific crystal orientation because of variation in the free surface segregation energy of hydrogen uniforms without depending on surface orientation.

本文言語英語
ページ(範囲)586-591
ページ数6
ジャーナルMaterials Transactions
63
4
DOI
出版ステータス出版済み - 2022

!!!All Science Journal Classification (ASJC) codes

  • 材料科学(全般)
  • 凝縮系物理学
  • 材料力学
  • 機械工学

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