抄録

In situ electron irradiation using high-resolution transmission electron microscopy (HRTEM) was performed to visualize the Frank loop evolution in aluminumcopper (AlCu) alloy with an atomic-scale spatial resolution of 0.12 nm. The in situ HRTEM observation along the [110] direction of the FCC-Al lattice, Frank partial dislocation bounding an intrinsic stacking fault exhibited an asymmetrical climb along the (112) direction opposed to those in the reference pure Al under an electron irradiation, with a corresponding displacement-per-atom rate of 0.0550.120 dpa/s in a high vacuum (1.2 ×10 5 Pa). We performed theoretical calculations to simulate the asymmetrical climb of the dislocation with Burgers vector b of 1/3(111). The CuCu bonding in GuinierPreston zones was described as a possible pinning site of the dislocation climb by molecular dynamics simulation.

本文言語English
ページ(範囲)468-474
ページ数7
ジャーナルMaterials Transactions
63
4
DOI
出版ステータスPublished - 2022

ASJC Scopus subject areas

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

フィンガープリント

「In Situ TEM Observation and MD Simulation of Frank Partial Dislocation Climbing in AlCu Alloy」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

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